def run_test(fo, fi, interleaver, Kb, bitspersymbol, K, dimensionality,
constellation, N0, seed):
tb = gr.top_block()
# TX
src = blocks.lfsr_32k_source_s()
src_head = blocks.head(gr.sizeof_short, Kb / 16) # packet size in shorts
s2fsmi = blocks.packed_to_unpacked_ss(
bitspersymbol, gr.GR_MSB_FIRST
) # unpack shorts to symbols compatible with the outer FSM input cardinality
enc_out = trellis.encoder_ss(fo, 0) # initial state = 0
inter = trellis.permutation(interleaver.K(), interleaver.INTER(), 1,
gr.sizeof_short)
enc_in = trellis.encoder_ss(fi, 0) # initial state = 0
mod = digital.chunks_to_symbols_sf(constellation, dimensionality)
# CHANNEL
add = blocks.add_ff()
noise = analog.noise_source_f(analog.GR_GAUSSIAN, math.sqrt(N0 / 2), seed)
# RX
metrics_in = trellis.metrics_f(
fi.O(), dimensionality, constellation, digital.TRELLIS_EUCLIDEAN
) # data preprocessing to generate metrics for innner Viterbi
gnd = blocks.vector_source_f([0], True)
siso_in = trellis.siso_f(
fi, K, 0, -1, True, False, trellis.TRELLIS_MIN_SUM
) # Put -1 if the Initial/Final states are not set.
deinter = trellis.permutation(interleaver.K(), interleaver.DEINTER(),
fi.I(), gr.sizeof_float)
va_out = trellis.viterbi_s(
fo, K, 0, -1) # Put -1 if the Initial/Final states are not set.
fsmi2s = blocks.unpacked_to_packed_ss(
bitspersymbol, gr.GR_MSB_FIRST) # pack FSM input symbols to shorts
dst = blocks.check_lfsr_32k_s()
tb.connect(src, src_head, s2fsmi, enc_out, inter, enc_in, mod)
tb.connect(mod, (add, 0))
tb.connect(noise, (add, 1))
tb.connect(add, metrics_in)
tb.connect(gnd, (siso_in, 0))
tb.connect(metrics_in, (siso_in, 1))
tb.connect(siso_in, deinter, va_out, fsmi2s, dst)
tb.run()
ntotal = dst.ntotal()
nright = dst.nright()
runlength = dst.runlength()
return (ntotal, ntotal - nright)
def make_rx(tb, fo, fi, dimensionality, tot_constellation, K, interleaver, IT,
Es, N0, type):
metrics_in = trellis.metrics_f(
fi.O(), dimensionality, tot_constellation, digital.TRELLIS_EUCLIDEAN
) # data preprocessing to generate metrics for innner SISO
scale = gr.multiply_const_ff(1.0 / N0)
gnd = gr.vector_source_f([0], True)
inter = []
deinter = []
siso_in = []
siso_out = []
# generate all blocks
for it in range(IT):
inter.append(
trellis.permutation(interleaver.K(), interleaver.INTER(), fi.I(),
gr.sizeof_float))
siso_in.append(trellis.siso_f(fi, K, 0, -1, True, False, type))
deinter.append(
trellis.permutation(interleaver.K(), interleaver.DEINTER(), fi.I(),
gr.sizeof_float))
if it < IT - 1:
siso_out.append(trellis.siso_f(fo, K, 0, -1, False, True, type))
else:
siso_out.append(trellis.viterbi_s(fo, K, 0,
-1)) # no soft outputs needed
# connect first stage
tb.connect(gnd, inter[0])
tb.connect(metrics_in, scale)
tb.connect(scale, (siso_in[0], 1))
# connect the rest
for it in range(IT):
if it < IT - 1:
tb.connect(scale, (siso_in[it + 1], 1))
tb.connect(siso_in[it], deinter[it], (siso_out[it], 1))
tb.connect(gnd, (siso_out[it], 0))
tb.connect(siso_out[it], inter[it + 1])
tb.connect(inter[it], (siso_in[it], 0))
else:
tb.connect(siso_in[it], deinter[it], siso_out[it])
tb.connect(inter[it], (siso_in[it], 0))
return (metrics_in, siso_out[IT - 1])
def run_test(fo, fi, interleaver, Kb, bitspersymbol, K, dimensionality, constellation, N0, seed):
tb = gr.top_block()
# TX
src = gr.lfsr_32k_source_s()
src_head = gr.head(gr.sizeof_short, Kb / 16) # packet size in shorts
s2fsmi = gr.packed_to_unpacked_ss(
bitspersymbol, gr.GR_MSB_FIRST
) # unpack shorts to symbols compatible with the outer FSM input cardinality
enc_out = trellis.encoder_ss(fo, 0) # initial state = 0
inter = trellis.permutation(interleaver.K(), interleaver.INTER(), 1, gr.sizeof_short)
enc_in = trellis.encoder_ss(fi, 0) # initial state = 0
mod = gr.chunks_to_symbols_sf(constellation, dimensionality)
# CHANNEL
add = gr.add_ff()
noise = gr.noise_source_f(gr.GR_GAUSSIAN, math.sqrt(N0 / 2), seed)
# RX
metrics_in = trellis.metrics_f(
fi.O(), dimensionality, constellation, trellis.TRELLIS_EUCLIDEAN
) # data preprocessing to generate metrics for innner Viterbi
va_in = trellis.viterbi_s(fi, K, 0, -1) # Put -1 if the Initial/Final states are not set.
deinter = trellis.permutation(interleaver.K(), interleaver.DEINTER(), 1, gr.sizeof_short)
metrics_out = trellis.metrics_s(
fo.O(), 1, [0, 1, 2, 3], trellis.TRELLIS_HARD_SYMBOL
) # data preprocessing to generate metrics for outer Viterbi (hard decisions)
va_out = trellis.viterbi_s(fo, K, 0, -1) # Put -1 if the Initial/Final states are not set.
fsmi2s = gr.unpacked_to_packed_ss(bitspersymbol, gr.GR_MSB_FIRST) # pack FSM input symbols to shorts
dst = gr.check_lfsr_32k_s()
tb.connect(src, src_head, s2fsmi, enc_out, inter, enc_in, mod)
tb.connect(mod, (add, 0))
tb.connect(noise, (add, 1))
tb.connect(add, metrics_in)
tb.connect(metrics_in, va_in, deinter, metrics_out, va_out, fsmi2s, dst)
tb.run()
ntotal = dst.ntotal()
nright = dst.nright()
runlength = dst.runlength()
return (ntotal, ntotal - nright)
def make_rx(tb, fo, fi, dimensionality, tot_constellation, K, interleaver, IT, Es, N0, type):
metrics_in = trellis.metrics_f(
fi.O(), dimensionality, tot_constellation, digital.TRELLIS_EUCLIDEAN
) # data preprocessing to generate metrics for innner SISO
scale = blocks.multiply_const_ff(1.0 / N0)
gnd = blocks.vector_source_f([0], True)
inter = []
deinter = []
siso_in = []
siso_out = []
# generate all blocks
for it in range(IT):
inter.append(trellis.permutation(interleaver.K(), interleaver.INTER(), fi.I(), gr.sizeof_float))
siso_in.append(trellis.siso_f(fi, K, 0, -1, True, False, type))
deinter.append(trellis.permutation(interleaver.K(), interleaver.DEINTER(), fi.I(), gr.sizeof_float))
if it < IT - 1:
siso_out.append(trellis.siso_f(fo, K, 0, -1, False, True, type))
else:
siso_out.append(trellis.viterbi_s(fo, K, 0, -1)) # no soft outputs needed
# connect first stage
tb.connect(gnd, inter[0])
tb.connect(metrics_in, scale)
tb.connect(scale, (siso_in[0], 1))
# connect the rest
for it in range(IT):
if it < IT - 1:
tb.connect(metrics_in, (siso_in[it + 1], 1))
tb.connect(siso_in[it], deinter[it], (siso_out[it], 1))
tb.connect(gnd, (siso_out[it], 0))
tb.connect(siso_out[it], inter[it + 1])
tb.connect(inter[it], (siso_in[it], 0))
else:
tb.connect(siso_in[it], deinter[it], siso_out[it])
tb.connect(inter[it], (siso_in[it], 0))
return (metrics_in, siso_out[IT - 1])
def setup_test06(self):
print "... benchmarking QPSK + 1/2 mapper"
self.mode = 2
bitspermode = [0.5, 1, 1.5, 2, 3, 4, 4.5, 5, 6]
self.nobits = (bitspermode[self.mode - 1])
self.data_subcarriers = 200
self.blks = self.N * (int(10 * self.nobits) + 1)
self.tb = gr.top_block()
self.encoder = self._encoder = trellis.encoder_bb(self.fo, 0)
self.unpack = self._unpack = blocks.unpack_k_bits_bb(2)
self.puncturing = puncture_bb(self.data_subcarriers)
bmaptrig_stream_puncturing = [1] + [0] * (10 / 2 - 1)
self.bitmap_trigger_puncturing = blocks.vector_source_b(
bmaptrig_stream_puncturing, True)
if self.interleave:
int_object = trellis.interleaver(2000, 666)
self.interlv = trellis.permutation(int_object.K(),
int_object.INTER(), 1,
gr.sizeof_char)
#self.bitmap = [self.nobits]*self.data_subcarriers
self.bitmap = [self.mode] * self.data_subcarriers + [
self.mode
] * self.data_subcarriers
#self.bmaptrig_stream = [1, 1]+[0]*(11-2)
self.bitdata = [
randint(0, 1) for i in range(self.blks * self.data_subcarriers)
]
#self.data = numpy.array(self.bitdata)*(-2)+1
self.src = blocks.vector_source_b(self.bitdata)
self.bitmap_src = blocks.vector_source_b(self.bitmap, True,
self.data_subcarriers)
#self.bitmap_trigger = blocks.vector_source_b(self.bmaptrig_stream, True)
self.modulator = generic_mapper_bcv(self.data_subcarriers, self.coding,
10)
self.snk = blocks.null_sink(gr.sizeof_gr_complex *
self.data_subcarriers)
#Connect blocks
self.tb.connect(self.src, self.encoder, self.unpack,
self.puncturing) #, self.modulator, self.snk)
if self.interleave:
self.tb.connect(self.puncturing, self.interlv, self.modulator,
self.snk)
else:
self.tb.connect(self.puncturing, self.modulator, self.snk)
self.tb.connect(self.bitmap_src, (self.modulator, 1))
self.tb.connect(self.bitmap_src, (self.puncturing, 1))
self.tb.connect(self.bitmap_trigger_puncturing, (self.puncturing, 2))
def setup_test07(self):
print "... benchmarking BPSK demapper"
self.mode = 1
bitspermode = [0.5,1,1.5,2,3,4,4.5,5,6]
self.data_subcarriers = 200
self.chunkdivisor = 2
bitcount_vec = [(int)(self.data_subcarriers*10*bitspermode[self.mode-1])]
dm_csi = [1]*self.data_subcarriers # TODO
self.dm_csi = blocks.vector_source_f(dm_csi,True)
self.blks = self.N*(10 + 1)
self.tb = gr.top_block()
self.bitcount_src = blocks.vector_source_i(bitcount_vec,True,1)
self.depuncturing = depuncture_ff(self.data_subcarriers,0)
bmaptrig_stream_puncturing = [1]+[0]*(10/2-1)
self.bitmap_trigger_puncturing = blocks.vector_source_b(bmaptrig_stream_puncturing, True)
self.data_decoder = ofdm.viterbi_combined_fb(self.fo,self.data_subcarriers,-1,-1,2,self.chunkdivisor,[-1,-1,-1,1,1,-1,1,1],ofdm.TRELLIS_EUCLIDEAN)
if self.interleave:
int_object=trellis.interleaver(2000,666)
self.deinterlv = trellis.permutation(int_object.K(),int_object.DEINTER(),1,gr.sizeof_float)
#self.bitmap = [self.nobits]*self.data_subcarriers
self.demodulator = generic_softdemapper_vcf(self.data_subcarriers, 11, self.coding)
#const = self.demodulator.get_constellation( self.nobits )
#assert( len( const ) == 2**self.nobits )
self.bitdata = [random()+1j*random() for i in range(self.blks*self.data_subcarriers)]
self.src = blocks.vector_source_c(self.bitdata,False, self.data_subcarriers)
#self.src = symbol_random_src( const, self.data_subcarriers )
self.bitmap = [self.mode]*self.data_subcarriers
self.bitmap_src = blocks.vector_source_b(self.bitmap,True, self.data_subcarriers)
#self.bmaptrig_stream = [1, 2]+[0]*(11-2)
#self.bitmap_trigger = blocks.vector_source_b(self.bmaptrig_stream, True)
self.snk = blocks.null_sink(gr.sizeof_char)
#Connect blocks
self.tb.connect(self.src,self.demodulator)
if self.interleave:
self.tb.connect(self.demodulator,self.deinterlv, self.depuncturing, self.data_decoder,self.snk)
else:
self.tb.connect(self.demodulator, self.depuncturing, self.data_decoder,self.snk)
self.tb.connect(self.bitmap_src,(self.demodulator,1))
self.tb.connect(self.dm_csi,blocks.stream_to_vector(gr.sizeof_float,self.data_subcarriers),(self.demodulator,2))
self.tb.connect(self.bitmap_src,(self.depuncturing,1))
self.tb.connect(self.bitmap_trigger_puncturing, (self.depuncturing,2))
self.tb.connect(self.bitcount_src, ofdm.multiply_const_ii(1./self.chunkdivisor), (self.data_decoder,1))
def make_rx(tb,fo,fi,dimensionality,tot_constellation,K,interleaver,IT,Es,N0,type):
scale = gr.multiply_const_ff(math.sqrt(1.0/N0))
gnd = gr.vector_source_f([0],True);
inter=[]
deinter=[]
siso_in=[]
siso_out=[]
# generate all blocks
for it in range(IT):
inter.append( trellis.permutation(interleaver.K(),interleaver.INTER(),fi.I(),gr.sizeof_float) )
siso_in.append( trellis.siso_combined_f(fi,K,0,-1,True,False,type,dimensionality,tot_constellation,trellis.TRELLIS_EUCLIDEAN) )
deinter.append( trellis.permutation(interleaver.K(),interleaver.DEINTER(),fi.I(),gr.sizeof_float) )
if it < IT-1:
siso_out.append( trellis.siso_f(fo,K,0,-1,False,True,type) )
else:
siso_out.append( trellis.viterbi_s(fo,K,0,-1) ) # no soft outputs needed
# connect first stage
tb.connect (gnd,inter[0])
tb.connect (scale,(siso_in[0],1))
# connect the rest
for it in range(IT):
if it < IT-1:
tb.connect (scale,(siso_in[it+1],1))
tb.connect (siso_in[it],deinter[it],(siso_out[it],1))
tb.connect (gnd,(siso_out[it],0))
tb.connect (siso_out[it],inter[it+1])
tb.connect (inter[it],(siso_in[it],0))
else:
tb.connect (siso_in[it],deinter[it],siso_out[it])
tb.connect (inter[it],(siso_in[it],0))
return (scale,siso_out[IT-1])
def run_test(fo, fi, interleaver, Kb, bitspersymbol, K, channel, modulation,
dimensionality, tot_constellation, Es, N0, IT, seed):
tb = gr.top_block()
L = len(channel)
# TX
# this for loop is TOO slow in python!!!
packet = [0] * (K)
random.seed(seed)
for i in range(len(packet)):
packet[i] = random.randint(0, 2**bitspersymbol - 1) # random symbols
src = gr.vector_source_s(packet, False)
enc_out = trellis.encoder_ss(fo, 0) # initial state = 0
inter = trellis.permutation(interleaver.K(), interleaver.INTER(), 1,
gr.sizeof_short)
mod = gr.chunks_to_symbols_sf(modulation[1], modulation[0])
# CHANNEL
isi = gr.fir_filter_fff(1, channel)
add = gr.add_ff()
noise = gr.noise_source_f(gr.GR_GAUSSIAN, math.sqrt(N0 / 2), seed)
# RX
(head, tail) = make_rx(tb, fo, fi, dimensionality, tot_constellation, K,
interleaver, IT, Es, N0, trellis.TRELLIS_MIN_SUM)
dst = gr.vector_sink_s()
tb.connect(src, enc_out, inter, mod)
tb.connect(mod, isi, (add, 0))
tb.connect(noise, (add, 1))
tb.connect(add, head)
tb.connect(tail, dst)
tb.run()
data = dst.data()
ntotal = len(data)
nright = 0
for i in range(ntotal):
if packet[i] == data[i]:
nright = nright + 1
#else:
#print "Error in ", i
return (ntotal, ntotal - nright)
def setup_test06(self):
print "... benchmarking QPSK + 1/2 mapper"
self.mode = 2
bitspermode= [0.5,1,1.5,2,3,4,4.5,5,6]
self.nobits = (bitspermode[self.mode-1])
self.data_subcarriers = 200
self.blks = self.N*(int(10*self.nobits) +1)
self.tb = gr.top_block()
self.encoder = self._encoder = trellis.encoder_bb(self.fo,0)
self.unpack = self._unpack = blocks.unpack_k_bits_bb(2)
self.puncturing = puncture_bb(self.data_subcarriers)
bmaptrig_stream_puncturing = [1]+[0]*(10/2-1)
self.bitmap_trigger_puncturing = blocks.vector_source_b(bmaptrig_stream_puncturing, True)
if self.interleave:
int_object=trellis.interleaver(2000,666)
self.interlv = trellis.permutation(int_object.K(),int_object.INTER(),1,gr.sizeof_char)
#self.bitmap = [self.nobits]*self.data_subcarriers
self.bitmap = [self.mode]*self.data_subcarriers + [self.mode]*self.data_subcarriers
#self.bmaptrig_stream = [1, 1]+[0]*(11-2)
self.bitdata = [randint(0,1) for i in range(self.blks*self.data_subcarriers)]
#self.data = numpy.array(self.bitdata)*(-2)+1
self.src = blocks.vector_source_b(self.bitdata)
self.bitmap_src = blocks.vector_source_b(self.bitmap,True, self.data_subcarriers)
#self.bitmap_trigger = blocks.vector_source_b(self.bmaptrig_stream, True)
self.modulator = generic_mapper_bcv(self.data_subcarriers,self.coding,10)
self.snk = blocks.null_sink(gr.sizeof_gr_complex*self.data_subcarriers)
#Connect blocks
self.tb.connect(self.src,self.encoder,self.unpack,self.puncturing)#, self.modulator, self.snk)
if self.interleave:
self.tb.connect(self.puncturing,self.interlv, self.modulator, self.snk)
else:
self.tb.connect(self.puncturing, self.modulator, self.snk)
self.tb.connect(self.bitmap_src, (self.modulator,1))
self.tb.connect(self.bitmap_src, (self.puncturing,1))
self.tb.connect(self.bitmap_trigger_puncturing, (self.puncturing,2))
def run_test (fo,fi,interleaver,Kb,bitspersymbol,K,channel,modulation,dimensionality,tot_constellation,Es,N0,IT,seed):
tb = gr.top_block ()
L = len(channel)
# TX
# this for loop is TOO slow in python!!!
packet = [0]*(K)
random.seed(seed)
for i in range(len(packet)):
packet[i] = random.randint(0, 2**bitspersymbol - 1) # random symbols
src = blocks.vector_source_s(packet,False)
enc_out = trellis.encoder_ss(fo,0) # initial state = 0
inter = trellis.permutation(interleaver.K(),interleaver.INTER(),1,gr.sizeof_short)
mod = digital.chunks_to_symbols_sf(modulation[1],modulation[0])
# CHANNEL
isi = filter.fir_filter_fff(1,channel)
add = blocks.add_ff()
noise = analog.noise_source_f(analog.GR_GAUSSIAN,math.sqrt(N0/2),seed)
# RX
(head,tail) = make_rx(tb,fo,fi,dimensionality,tot_constellation,K,interleaver,IT,Es,N0,trellis.TRELLIS_MIN_SUM)
dst = blocks.vector_sink_s();
tb.connect (src,enc_out,inter,mod)
tb.connect (mod,isi,(add,0))
tb.connect (noise,(add,1))
tb.connect (add,head)
tb.connect (tail,dst)
tb.run()
data = dst.data()
ntotal = len(data)
nright=0
for i in range(ntotal):
if packet[i]==data[i]:
nright=nright+1
#else:
#print "Error in ", i
return (ntotal,ntotal-nright)
def run_test(fo, fi, interleaver, Kb, bitspersymbol, K, dimensionality,
constellation, Es, N0, IT, seed):
tb = gr.top_block()
# TX
src = gr.lfsr_32k_source_s()
src_head = gr.head(gr.sizeof_short, Kb / 16) # packet size in shorts
s2fsmi = gr.packed_to_unpacked_ss(
bitspersymbol, gr.GR_MSB_FIRST
) # unpack shorts to symbols compatible with the outer FSM input cardinality
enc_out = trellis.encoder_ss(fo, 0) # initial state = 0
inter = trellis.permutation(interleaver.K(), interleaver.INTER(), 1,
gr.sizeof_short)
enc_in = trellis.encoder_ss(fi, 0) # initial state = 0
mod = gr.chunks_to_symbols_sf(constellation, dimensionality)
# CHANNEL
add = gr.add_ff()
noise = gr.noise_source_f(gr.GR_GAUSSIAN, math.sqrt(N0 / 2), seed)
# RX
(head, tail) = make_rx(tb, fo, fi, dimensionality, constellation, K,
interleaver, IT, Es, N0, trellis.TRELLIS_MIN_SUM)
#(head,tail) = make_rx(tb,fo,fi,dimensionality,constellation,K,interleaver,IT,Es,N0,trellis.TRELLIS_SUM_PRODUCT)
fsmi2s = gr.unpacked_to_packed_ss(
bitspersymbol, gr.GR_MSB_FIRST) # pack FSM input symbols to shorts
dst = gr.check_lfsr_32k_s()
tb.connect(src, src_head, s2fsmi, enc_out, inter, enc_in, mod)
tb.connect(mod, (add, 0))
tb.connect(noise, (add, 1))
tb.connect(add, head)
tb.connect(tail, fsmi2s, dst)
tb.run()
#print enc_out.ST(), enc_in.ST()
ntotal = dst.ntotal()
nright = dst.nright()
runlength = dst.runlength()
return (ntotal, ntotal - nright)
def run_test(fo, fi, interleaver, Kb, bitspersymbol, K, dimensionality, tot_constellation, Es, N0, IT, seed):
tb = gr.top_block()
# TX
src = blocks.lfsr_32k_source_s()
src_head = blocks.head(gr.sizeof_short, Kb / 16) # packet size in shorts
s2fsmi = blocks.packed_to_unpacked_ss(
bitspersymbol, gr.GR_MSB_FIRST
) # unpack shorts to symbols compatible with the iouter FSM input cardinality
enc_out = trellis.encoder_ss(fo, 0) # initial state = 0
inter = trellis.permutation(interleaver.K(), interleaver.INTER(), 1, gr.sizeof_short)
enc_in = trellis.encoder_ss(fi, 0) # initial state = 0
# essentially here we implement the combination of modulation and channel as a memoryless modulation (the memory induced by the channel is hidden in the innner FSM)
mod = digital.chunks_to_symbols_sf(tot_constellation, dimensionality)
# CHANNEL
add = blocks.add_ff()
noise = analog.noise_source_f(analog.GR_GAUSSIAN, math.sqrt(N0 / 2), seed)
# RX
(head, tail) = make_rx(
tb, fo, fi, dimensionality, tot_constellation, K, interleaver, IT, Es, N0, trellis.TRELLIS_MIN_SUM
)
fsmi2s = blocks.unpacked_to_packed_ss(bitspersymbol, gr.GR_MSB_FIRST) # pack FSM input symbols to shorts
dst = blocks.check_lfsr_32k_s()
tb.connect(src, src_head, s2fsmi, enc_out, inter, enc_in, mod)
tb.connect(mod, (add, 0))
tb.connect(noise, (add, 1))
tb.connect(add, head)
tb.connect(tail, fsmi2s, dst)
tb.run()
ntotal = dst.ntotal()
nright = dst.nright()
runlength = dst.runlength()
# print ntotal,nright,runlength
return (ntotal, ntotal - nright)
def run_test(fo, fi, interleaver, Kb, bitspersymbol, K, dimensionality, constellation, Es, N0, IT, seed):
tb = gr.top_block()
# TX
src = gr.lfsr_32k_source_s()
src_head = gr.head(gr.sizeof_short, Kb / 16) # packet size in shorts
s2fsmi = gr.packed_to_unpacked_ss(
bitspersymbol, gr.GR_MSB_FIRST
) # unpack shorts to symbols compatible with the outer FSM input cardinality
enc_out = trellis.encoder_ss(fo, 0) # initial state = 0
inter = trellis.permutation(interleaver.K(), interleaver.INTER(), 1, gr.sizeof_short)
enc_in = trellis.encoder_ss(fi, 0) # initial state = 0
mod = gr.chunks_to_symbols_sf(constellation, dimensionality)
# CHANNEL
add = gr.add_ff()
noise = gr.noise_source_f(gr.GR_GAUSSIAN, math.sqrt(N0 / 2), seed)
# RX
(head, tail) = make_rx(
tb, fo, fi, dimensionality, constellation, K, interleaver, IT, Es, N0, trellis.TRELLIS_MIN_SUM
)
# (head,tail) = make_rx(tb,fo,fi,dimensionality,constellation,K,interleaver,IT,Es,N0,trellis.TRELLIS_SUM_PRODUCT)
fsmi2s = gr.unpacked_to_packed_ss(bitspersymbol, gr.GR_MSB_FIRST) # pack FSM input symbols to shorts
dst = gr.check_lfsr_32k_s()
tb.connect(src, src_head, s2fsmi, enc_out, inter, enc_in, mod)
tb.connect(mod, (add, 0))
tb.connect(noise, (add, 1))
tb.connect(add, head)
tb.connect(tail, fsmi2s, dst)
tb.run()
# print enc_out.ST(), enc_in.ST()
ntotal = dst.ntotal()
nright = dst.nright()
runlength = dst.runlength()
return (ntotal, ntotal - nright)
def run_test (fo,fi,interleaver,Kb,bitspersymbol,K,dimensionality,tot_constellation,Es,N0,IT,seed):
tb = gr.top_block ()
# TX
src = blocks.lfsr_32k_source_s()
src_head = blocks.head(gr.sizeof_short,Kb/16) # packet size in shorts
s2fsmi = blocks.packed_to_unpacked_ss(bitspersymbol,gr.GR_MSB_FIRST) # unpack shorts to symbols compatible with the iouter FSM input cardinality
enc_out = trellis.encoder_ss(fo,0) # initial state = 0
inter = trellis.permutation(interleaver.K(),interleaver.INTER(),1,gr.sizeof_short)
enc_in = trellis.encoder_ss(fi,0) # initial state = 0
# essentially here we implement the combination of modulation and channel as a memoryless modulation (the memory induced by the channel is hidden in the innner FSM)
mod = digital.chunks_to_symbols_sf(tot_constellation,dimensionality)
# CHANNEL
add = blocks.add_ff()
noise = analog.noise_source_f(analog.GR_GAUSSIAN,math.sqrt(N0/2),seed)
# RX
(head,tail) = make_rx(tb,fo,fi,dimensionality,tot_constellation,K,interleaver,IT,Es,N0,trellis.TRELLIS_MIN_SUM)
fsmi2s = blocks.unpacked_to_packed_ss(bitspersymbol,gr.GR_MSB_FIRST) # pack FSM input symbols to shorts
dst = blocks.check_lfsr_32k_s();
tb.connect (src,src_head,s2fsmi,enc_out,inter,enc_in,mod)
tb.connect (mod,(add,0))
tb.connect (noise,(add,1))
tb.connect (add,head)
tb.connect (tail,fsmi2s,dst)
tb.run()
ntotal = dst.ntotal ()
nright = dst.nright ()
runlength = dst.runlength ()
#print ntotal,nright,runlength
return (ntotal,ntotal-nright)
def __init__(self, options):
gr.hier_block2.__init__(
self, "fbmc_transmit_path", gr.io_signature(0, 0, 0), gr.io_signature(1, 1, gr.sizeof_gr_complex)
)
common_options.defaults(options)
config = self.config = station_configuration()
config.data_subcarriers = options.subcarriers
config.cp_length = 0
config.frame_data_blocks = options.data_blocks
config._verbose = options.verbose
config.fft_length = options.fft_length
config.dc_null = options.dc_null
config.training_data = default_block_header(config.data_subcarriers, config.fft_length, config.dc_null, options)
config.coding = options.coding
config.fbmc = options.fbmc
config.adaptive_fbmc = options.adaptive_fbmc
config.frame_id_blocks = 1 # FIXME
# digital rms amplitude sent to USRP
rms_amp = options.rms_amplitude
self._options = copy.copy(options)
config.block_length = config.fft_length + config.cp_length
config.frame_data_part = config.frame_data_blocks + config.frame_id_blocks
config.frame_length = config.training_data.fbmc_no_preambles + 2 * config.frame_data_part
config.subcarriers = config.data_subcarriers + config.training_data.pilot_subcarriers
config.virtual_subcarriers = config.fft_length - config.subcarriers - config.dc_null
# default values if parameters not set
if rms_amp is None:
rms_amp = math.sqrt(config.subcarriers)
config.rms_amplitude = rms_amp
# check some bounds
if config.fft_length < config.subcarriers:
raise SystemError, "Subcarrier number must be less than FFT length"
if config.fft_length < config.cp_length:
raise SystemError, "Cyclic prefix length must be less than FFT length"
## shortcuts
blen = config.block_length
flen = config.frame_length
dsubc = config.data_subcarriers
vsubc = config.virtual_subcarriers
# Adaptive Transmitter Concept
used_id_bits = config.used_id_bits = 8 # TODO: no constant in source code
rep_id_bits = config.rep_id_bits = config.data_subcarriers / used_id_bits # BPSK
if config.data_subcarriers % used_id_bits <> 0:
raise SystemError, "Data subcarriers need to be multiple of %d" % (used_id_bits)
## Allocation Control
self.allocation_src = allocation_src(
config.data_subcarriers,
config.frame_data_blocks,
config.coding,
"tcp://*:3333",
"tcp://" + options.rx_hostname + ":3322",
)
if options.static_allocation: # DEBUG
# how many bits per subcarrier
if options.coding:
mode = 1 # Coding mode 1-9
bitspermode = [0.5, 1, 1.5, 2, 3, 4, 4.5, 5, 6] # Information bits per mode
modulbitspermode = [1, 2, 2, 4, 4, 6, 6, 6, 8] # Coding bits per mode
bitcount_vec = [(int)(config.data_subcarriers * config.frame_data_blocks * bitspermode[mode - 1])]
modul_bitcount_vec = [config.data_subcarriers * config.frame_data_blocks * modulbitspermode[mode - 1]]
bitcount_src = blocks.vector_source_i(bitcount_vec, True, 1)
modul_bitcount_src = blocks.vector_source_i(modul_bitcount_vec, True, 1)
bitloading = mode
else:
bitloading = 1
bitcount_vec = [config.data_subcarriers * config.frame_data_blocks * bitloading]
bitcount_src = blocks.vector_source_i(bitcount_vec, True, 1)
modul_bitcount_src = bitcount_src
# id's for frames
id_vec = range(0, 256)
id_src = blocks.vector_source_s(id_vec, True, 1)
# bitloading for ID symbol and then once for data symbols
# bitloading_vec = [1]*dsubc+[0]*(dsubc/2)+[2]*(dsubc/2)
test_allocation = (
[bitloading] * (int)(config.data_subcarriers / 8)
+ [0] * (int)(config.data_subcarriers / 4 * 3)
+ [bitloading] * (int)(config.data_subcarriers / 8)
)
# bitloading_vec = [1]*dsubc+[bitloading]*dsubc
bitloading_vec = [1] * dsubc + test_allocation
bitloading_src = blocks.vector_source_b(bitloading_vec, True, dsubc)
# bitcount for frames
# bitcount_vec = [config.data_subcarriers*config.frame_data_blocks*bitloading]
bitcount_vec = [config.frame_data_blocks * sum(test_allocation)]
bitcount_src = blocks.vector_source_i(bitcount_vec, True, 1)
# power loading, here same for all symbols
power_vec = (
[1] * (int)(config.data_subcarriers / 8)
+ [0] * (int)(config.data_subcarriers / 4 * 3)
+ [1] * (int)(config.data_subcarriers / 8)
)
power_src = blocks.vector_source_f(power_vec, True, dsubc)
# mux control stream to mux id and data bits
mux_vec = [0] * dsubc + [1] * bitcount_vec[0]
mux_ctrl = blocks.vector_source_b(mux_vec, True, 1)
else:
id_src = (self.allocation_src, 0)
bitcount_src = (self.allocation_src, 4)
bitloading_src = (self.allocation_src, 2)
power_src = (self.allocation_src, 1)
if options.coding:
modul_bitcount_src = (self.allocation_src, 5)
else:
modul_bitcount_src = bitcount_src
mux_ctrl = ofdm.tx_mux_ctrl(dsubc)
self.connect(modul_bitcount_src, mux_ctrl)
# Initial allocation
self.allocation_src.set_allocation([4] * config.data_subcarriers, [1] * config.data_subcarriers)
if options.benchmarking:
self.allocation_src.set_allocation([4] * config.data_subcarriers, [1] * config.data_subcarriers)
if options.lab_special_case:
self.allocation_src.set_allocation(
[0] * (config.data_subcarriers / 4)
+ [2] * (config.data_subcarriers / 2)
+ [0] * (config.data_subcarriers / 4),
[1] * config.data_subcarriers,
)
if options.log:
log_to_file(self, id_src, "data/id_src.short")
log_to_file(self, bitcount_src, "data/bitcount_src.int")
log_to_file(self, bitloading_src, "data/bitloading_src.char")
log_to_file(self, power_src, "data/power_src.cmplx")
## GUI probe output
zmq_probe_bitloading = zeromq.pub_sink(gr.sizeof_char, dsubc, "tcp://*:4445")
# also skip ID symbol bitloading with keep_one_in_n (side effect)
# factor 2 for bitloading because we have two vectors per frame, one for id symbol and one for all payload/data symbols
# factor config.frame_data_part for power because there is one vector per ofdm symbol per frame
self.connect(bitloading_src, blocks.keep_one_in_n(gr.sizeof_char * dsubc, 2 * 40), zmq_probe_bitloading)
zmq_probe_power = zeromq.pub_sink(gr.sizeof_float, dsubc, "tcp://*:4444")
# self.connect(power_src, blocks.keep_one_in_n(gr.sizeof_gr_complex*dsubc,40), blocks.complex_to_real(dsubc), zmq_probe_power)
self.connect(power_src, blocks.keep_one_in_n(gr.sizeof_float * dsubc, 40), zmq_probe_power)
## Workaround to avoid periodic structure
seed(1)
whitener_pn = [randint(0, 1) for i in range(used_id_bits * rep_id_bits)]
## ID Encoder
id_enc = self._id_encoder = repetition_encoder_sb(used_id_bits, rep_id_bits, whitener_pn)
self.connect(id_src, id_enc)
if options.log:
id_enc_f = gr.char_to_float()
self.connect(id_enc, id_enc_f)
log_to_file(self, id_enc_f, "data/id_enc_out.float")
## Reference Data Source
ber_ref_src = ber_reference_source(self._options)
self.connect(id_src, (ber_ref_src, 0))
self.connect(bitcount_src, (ber_ref_src, 1))
if options.log:
log_to_file(self, ber_ref_src, "data/ber_rec_src_tx.char")
if options.log:
log_to_file(self, btrig, "data/bitmap_trig.char")
## Frame Trigger
ftrig_stream = [1] + [0] * (config.frame_data_part - 1)
ftrig = self._frame_trigger = blocks.vector_source_b(ftrig_stream, True)
## Data Multiplexer
# Input 0: control stream
# Input 1: encoded ID stream
# Inputs 2..n: data streams
dmux = self._data_multiplexer = stream_controlled_mux_b()
self.connect(mux_ctrl, (dmux, 0))
self.connect(id_enc, (dmux, 1))
if options.coding:
fo = trellis.fsm(1, 2, [91, 121])
encoder = self._encoder = trellis.encoder_bb(fo, 0)
unpack = self._unpack = blocks.unpack_k_bits_bb(2)
self.connect(ber_ref_src, encoder, unpack)
if options.interleave:
int_object = trellis.interleaver(2000, 666)
interlv = trellis.permutation(int_object.K(), int_object.INTER(), 1, gr.sizeof_char)
if not options.nopunct:
bmaptrig_stream_puncturing = [1] + [0] * (config.frame_data_blocks / 2 - 1)
btrig_puncturing = self._bitmap_trigger_puncturing = blocks.vector_source_b(
bmaptrig_stream_puncturing, True
)
puncturing = self._puncturing = puncture_bb(config.data_subcarriers)
self.connect(bitloading_src, (puncturing, 1))
self.connect(self._bitmap_trigger_puncturing, (puncturing, 2))
self.connect(unpack, puncturing)
last_block = puncturing
if options.interleave:
self.connect(last_block, interlv)
last_block = interlv
if options.benchmarking:
self.connect(last_block, blocks.head(gr.sizeof_char, options.N), (dmux, 2))
else:
self.connect(last_block, (dmux, 2))
else:
if options.benchmarking:
self.connect(unpack, blocks.head(gr.sizeof_char, options.N), (dmux, 2))
else:
self.connect(unpack, (dmux, 2))
else:
if options.benchmarking:
self.connect(ber_ref_src, blocks.head(gr.sizeof_char, options.N), (dmux, 2))
else:
self.connect(ber_ref_src, (dmux, 2))
if options.log:
dmux_f = gr.char_to_float()
self.connect(dmux, dmux_f)
log_to_file(self, dmux_f, "data/dmux_out.float")
## Modulator
mod = self._modulator = generic_mapper_bcv(config.data_subcarriers, config.coding, config.frame_data_part)
self.connect(dmux, (mod, 0))
self.connect(bitloading_src, (mod, 1))
if options.log:
log_to_file(self, mod, "data/mod_out.compl")
modi = blocks.complex_to_imag(config.data_subcarriers)
modr = blocks.complex_to_real(config.data_subcarriers)
self.connect(mod, modi)
self.connect(mod, modr)
log_to_file(self, modi, "data/mod_imag_out.float")
log_to_file(self, modr, "data/mod_real_out.float")
## Power allocator
pa = self._power_allocator = multiply_frame_fc(config.frame_data_part, config.data_subcarriers)
self.connect(mod, (pa, 0))
self.connect(power_src, (pa, 1))
if options.log:
log_to_file(self, pa, "data/pa_out.compl")
if options.fbmc:
psubc = pa
else:
psubc = self._pilot_subcarrier_inserter = pilot_subcarrier_inserter()
self.connect(pa, psubc)
if options.log:
log_to_file(self, psubc, "data/psubc_out.compl")
subcarriers = config.subcarriers
# fbmc_pblocks_timing = self._fbmc_timing_pilot_block_inserter = fbmc_timing_pilot_block_inserter(5,False)
oqam_prep = self._oqam_prep = fbmc_oqam_preprocessing_vcvc(config.subcarriers, 0, 0)
self.connect(psubc, oqam_prep)
fbmc_pblocks = self._fbmc_pilot_block_inserter = fbmc_pilot_block_inserter(5, False)
self.connect(oqam_prep, fbmc_pblocks)
# log_to_file(self, fbmc_pblocks, "data/fbmc_pblocks_out.compl")
# fbmc_insert_pream = self._fbmc_insert_pream = fbmc_insert_preamble_vcvc(M, syms_per_frame, preamble)
# log_to_file(self, oqam_prep, "data/oqam_prep.compl")
# log_to_file(self, psubc, "data/psubc_out.compl")
# fbmc_pblocks = fbmc_pblocks_timing
# log_to_file(self, fbmc_pblocks, "data/fbmc_pblocks_out.compl")
beta_mult = self._beta_mult = fbmc_beta_multiplier_vcvc(config.subcarriers, 4, 4 * config.fft_length - 1, 0)
self.connect(fbmc_pblocks, beta_mult)
log_to_file(self, beta_mult, "data/beta_mult.compl")
## Add virtual subcarriers
if config.fft_length > subcarriers:
vsubc = self._virtual_subcarrier_extender = vector_padding_dc_null(
config.subcarriers, config.fft_length, config.dc_null
)
self.connect(beta_mult, vsubc)
else:
vsubc = self._virtual_subcarrier_extender = beta_mult
if options.log:
log_to_file(self, vsubc, "data/vsubc_out.compl")
## IFFT, no window, block shift
ifft = self._ifft = fft_blocks.fft_vcc(config.fft_length, False, [], True)
self.connect(vsubc, ifft)
if options.log:
log_to_file(self, ifft, "data/ifft_out.compl")
# FBMC separate stream + filterbanks
separate_oqam = self._separate_oqam = fbmc_separate_vcvc(config.fft_length, 2)
poly_netw_1 = self._poly_netw_1 = fbmc_polyphase_network_vcvc(
config.fft_length, 4, 4 * config.fft_length - 1, False
)
poly_netw_2 = self._poly_netw_2 = fbmc_polyphase_network_vcvc(
config.fft_length, 4, 4 * config.fft_length - 1, False
)
overlap_p2s = self._overlap_p2s = fbmc_overlapping_parallel_to_serial_vcc(config.fft_length)
self.connect(ifft, (separate_oqam, 0), poly_netw_1)
self.connect((separate_oqam, 1), poly_netw_2)
self.connect(poly_netw_1, (overlap_p2s, 0))
self.connect(poly_netw_2, (overlap_p2s, 1))
## Pilot blocks (preambles)
# pblocks = self._pilot_block_inserter = pilot_block_inserter2(5,False)
# self.connect( overlap_p2s, blocks.stream_to_vector(gr.sizeof_gr_complex,config.fft_length/2), pblocks )
# log_to_file(self, pblocks, "data/fbmc_pilot_block_ins_out.compl")
if options.log:
log_to_file(self, pblocks, "data/pilot_block_ins_out.compl")
## Cyclic Prefix
# cp = self._cyclic_prefixer = cyclic_prefixer(config.fft_length,
# config.block_length)
# cp= blocks.vector_to_stream(gr.sizeof_gr_complex, config.fft_length/2)
# self.connect(pblocks, cp )
# self.connect( overlap_p2s,blocks.stream_to_vector(gr.sizeof_gr_complex,config.fft_length/2), cp )
lastblock = overlap_p2s
if options.log:
log_to_file(self, overlap_p2s, "data/overlap_p2s_out.compl")
# Digital Amplifier for resource allocation
if config.adaptive_fbmc:
rep = blocks.repeat(gr.sizeof_gr_complex, config.frame_length * config.block_length)
amp = blocks.multiply_cc()
self.connect(lastblock, (amp, 0))
self.connect((self.allocation_src, 3), rep, (amp, 1))
lastblock = amp
else:
self.connect((self.allocation_src, 3), blocks.null_sink(gr.sizeof_gr_complex))
## Digital Amplifier
# amp = self._amplifier = gr.multiply_const_cc(1)
amp = self._amplifier = ofdm.multiply_const_ccf(1.0)
self.connect(lastblock, amp)
self.set_rms_amplitude(rms_amp)
# log_to_file(self, amp, "data/amp_tx_out.compl")
if options.log:
log_to_file(self, amp, "data/amp_tx_out.compl")
## Tx parameters
bandwidth = options.bandwidth or 2e6
bits = 8 * config.data_subcarriers * config.frame_data_blocks # max. QAM256
samples_per_frame = config.frame_length * config.block_length
tb = samples_per_frame / bandwidth
# set dummy carrier frequency if none available due to baseband mode
if options.tx_freq is None:
options.tx_freq = 0.0
self.tx_parameters = {
"carrier_frequency": options.tx_freq / 1e9,
"fft_size": config.fft_length,
"cp_size": config.cp_length,
"subcarrier_spacing": options.bandwidth / config.fft_length / 1e3,
"data_subcarriers": config.data_subcarriers,
"bandwidth": options.bandwidth / 1e6,
"frame_length": config.frame_length,
"symbol_time": (config.cp_length + config.fft_length) / options.bandwidth * 1e6,
"max_data_rate": (bits / tb) / 1e6,
}
## Setup Output
self.connect(amp, self)
# Display some information about the setup
if config._verbose:
self._print_verbage()
def __init__(self, options):
gr.hier_block2.__init__(self, "fbmc_receive_path",
gr.io_signature(1,1,gr.sizeof_gr_complex),
gr.io_signature(0,0,0))
print "This is FBMC receive path 1x1"
common_options.defaults(options)
config = self.config = station_configuration()
config.data_subcarriers = dsubc = options.subcarriers
config.cp_length = 0
config.frame_data_blocks = options.data_blocks
config._verbose = options.verbose #TODO: update
config.fft_length = options.fft_length
config.dc_null = options.dc_null
config.training_data = default_block_header(dsubc,
config.fft_length,config.dc_null,options)
config.coding = options.coding
config.ber_window = options.ber_window
config.periodic_parts = 8
config.frame_id_blocks = 1 # FIXME
self._options = copy.copy(options) #FIXME: do we need this?
config.fbmc = options.fbmc
config.block_length = config.fft_length + config.cp_length
config.frame_data_part = config.frame_data_blocks + config.frame_id_blocks
config.frame_length = config.training_data.fbmc_no_preambles + 2*config.frame_data_part
config.postpro_frame_length = config.frame_data_part + \
config.training_data.no_pilotsyms
config.subcarriers = dsubc + \
config.training_data.pilot_subcarriers
config.virtual_subcarriers = config.fft_length - config.subcarriers - config.dc_null
total_subc = config.subcarriers
# check some bounds
if config.fft_length < config.subcarriers:
raise SystemError, "Subcarrier number must be less than FFT length"
if config.fft_length < config.cp_length:
raise SystemError, "Cyclic prefix length must be less than FFT length"
#self.input = gr.kludge_copy(gr.sizeof_gr_complex)
#self.connect( self, self.input )
self.input = self
self.ideal = options.ideal
self.ideal2 = options.ideal2
## Inner receiver
## Timing & Frequency Synchronization
## Channel estimation + Equalization
## Phase Tracking for sampling clock frequency offset correction
inner_receiver = self.inner_receiver = fbmc_inner_receiver( options, options.log )
self.connect( self.input, inner_receiver )
ofdm_blocks = ( inner_receiver, 2 )
frame_start = ( inner_receiver, 1 )
disp_ctf = ( inner_receiver, 0 )
#self.snr_est_preamble = ( inner_receiver, 3 )
#terminate_stream(self,snr_est_preamble)
disp_cfo = ( inner_receiver, 3 )
if self.ideal is False and self.ideal2 is False:
self.zmq_probe_freqoff = zeromq.pub_sink(gr.sizeof_float, 1, "tcp://*:5557")
self.connect(disp_cfo, self.zmq_probe_freqoff)
else:
self.connect(disp_cfo, blocks.null_sink(gr.sizeof_float))
# for ID decoder
used_id_bits = config.used_id_bits = 8 #TODO: constant in source code!
rep_id_bits = config.rep_id_bits = dsubc/used_id_bits #BPSK
if options.log:
print "rep_id_bits %d" % (rep_id_bits)
if dsubc % used_id_bits <> 0:
raise SystemError,"Data subcarriers need to be multiple of 10"
## Workaround to avoid periodic structure
seed(1)
whitener_pn = [randint(0,1) for i in range(used_id_bits*rep_id_bits)]
## NOTE!!! BIG HACK!!!
## first preamble ain't equalized ....
## for Milan's SNR estimator
## Outer Receiver
## Make new inner receiver compatible with old outer receiver
## FIXME: renew outer receiver
self.ctf = disp_ctf
#frame_sampler = ofdm_frame_sampler(options)
frame_sampler = fbmc_frame_sampler(options)
self.connect( ofdm_blocks, frame_sampler)
self.connect( frame_start, (frame_sampler,1) )
#
# ft = [0] * config.frame_length
# ft[0] = 1
#
# # The next block ensures that only complete frames find their way into
# # the old outer receiver. The dynamic frame start trigger is hence
# # replaced with a static one, fixed to the frame length.
#
# frame_sampler = ofdm.vector_sampler( gr.sizeof_gr_complex * total_subc,
# config.frame_length )
# self.symbol_output = blocks.vector_to_stream( gr.sizeof_gr_complex * total_subc,
# config.frame_length )
# delayed_frame_start = blocks.delay( gr.sizeof_char, config.frame_length - 1 )
# damn_static_frame_trigger = blocks.vector_source_b( ft, True )
#
# if options.enable_erasure_decision:
# frame_gate = vector_sampler(
# gr.sizeof_gr_complex * total_subc * config.frame_length, 1 )
# self.connect( ofdm_blocks, frame_sampler, frame_gate,
# self.symbol_output )
# else:
# self.connect( ofdm_blocks, frame_sampler, self.symbol_output )
#
# self.connect( frame_start, delayed_frame_start, ( frame_sampler, 1 ) )
if options.enable_erasure_decision:
frame_gate = frame_sampler.frame_gate
self.symbol_output = frame_sampler
orig_frame_start = frame_start
frame_start = (frame_sampler,1)
self.frame_trigger = frame_start
#terminate_stream(self, self.frame_trigger)
## Pilot block filter
pb_filt = self._pilot_block_filter = fbmc_pilot_block_filter()
self.connect(self.symbol_output,pb_filt)
self.connect(self.frame_trigger,(pb_filt,1))
self.frame_data_trigger = (pb_filt,1)
#self.symbol_output = pb_filt
#if options.log:
#log_to_file(self, pb_filt, "data/pb_filt_out.compl")
if config.fbmc:
pda_in = pb_filt
else:
## Pilot subcarrier filter
ps_filt = self._pilot_subcarrier_filter = pilot_subcarrier_filter()
self.connect(self.symbol_output,ps_filt)
if options.log:
log_to_file(self, ps_filt, "data/ps_filt_out.compl")
pda_in = ps_filt
## Workaround to avoid periodic structure
# for ID decoder
seed(1)
whitener_pn = [randint(0,1) for i in range(used_id_bits*rep_id_bits)]
if not options.enable_erasure_decision:
## ID Block Filter
# Filter ID block, skip data blocks
id_bfilt = self._id_block_filter = vector_sampler(
gr.sizeof_gr_complex * dsubc, 1 )
if not config.frame_id_blocks == 1:
raise SystemExit, "# ID Blocks > 1 not supported"
self.connect( pda_in , id_bfilt )
self.connect( self.frame_data_trigger, ( id_bfilt, 1 ) ) # trigger
#log_to_file( self, id_bfilt, "data/id_bfilt.compl" )
## ID Demapper and Decoder, soft decision
self.id_dec = self._id_decoder = ofdm.coded_bpsk_soft_decoder( dsubc,
used_id_bits, whitener_pn )
self.connect( id_bfilt, self.id_dec )
print "Using coded BPSK soft decoder for ID detection"
else: # options.enable_erasure_decision:
id_bfilt = self._id_block_filter = vector_sampler(
gr.sizeof_gr_complex * total_subc, config.frame_id_blocks )
id_bfilt_trig_delay = 0
for x in range( config.frame_length ):
if x in config.training_data.pilotsym_pos:
id_bfilt_trig_delay += 1
else:
break
print "Position of ID block within complete frame: %d" %(id_bfilt_trig_delay)
assert( id_bfilt_trig_delay > 0 ) # else not supported
id_bfilt_trig = blocks.delay( gr.sizeof_char, id_bfilt_trig_delay )
self.connect( ofdm_blocks, id_bfilt )
self.connect( orig_frame_start, id_bfilt_trig, ( id_bfilt, 1 ) )
self.id_dec = self._id_decoder = ofdm.coded_bpsk_soft_decoder( total_subc,
used_id_bits, whitener_pn, config.training_data.shifted_pilot_tones )
self.connect( id_bfilt, self.id_dec )
print "Using coded BPSK soft decoder for ID detection"
# The threshold block either returns 1.0 if the llr-value from the
# id decoder is below the threshold, else 0.0. Hence we convert this
# into chars, 0 and 1, and use it as trigger for the sampler.
min_llr = ( self.id_dec, 1 )
erasure_threshold = gr.threshold_ff( 10.0, 10.0, 0 ) # FIXME is it the optimal threshold?
erasure_dec = gr.float_to_char()
id_gate = vector_sampler( gr.sizeof_short, 1 )
ctf_gate = vector_sampler( gr.sizeof_float * total_subc, 1 )
self.connect( self.id_dec , id_gate )
self.connect( self.ctf, ctf_gate )
self.connect( min_llr, erasure_threshold, erasure_dec )
self.connect( erasure_dec, ( frame_gate, 1 ) )
self.connect( erasure_dec, ( id_gate, 1 ) )
self.connect( erasure_dec, ( ctf_gate, 1 ) )
self.id_dec = self._id_decoder = id_gate
self.ctf = ctf_gate
print "Erasure decision for IDs is enabled"
if options.log:
id_dec_f = gr.short_to_float()
self.connect(self.id_dec,id_dec_f)
log_to_file(self, id_dec_f, "data/id_dec_out.float")
if options.log:
log_to_file(self, id_bfilt, "data/id_blockfilter_out.compl")
# TODO: refactor names
if options.log:
map_src_f = gr.char_to_float(dsubc)
self.connect(map_src,map_src_f)
log_to_file(self, map_src_f, "data/map_src_out.float")
## Allocation Control
if options.static_allocation: #DEBUG
if options.coding:
mode = 1 # Coding mode 1-9
bitspermode = [0.5,1,1.5,2,3,4,4.5,5,6] # Information bits per mode
bitcount_vec = [(int)(config.data_subcarriers*config.frame_data_blocks*bitspermode[mode-1])]
bitloading = mode
else:
bitloading = 1
bitcount_vec = [config.data_subcarriers*config.frame_data_blocks*bitloading]
#bitcount_vec = [config.data_subcarriers*config.frame_data_blocks]
self.bitcount_src = blocks.vector_source_i(bitcount_vec,True,1)
# 0s for ID block, then data
#bitloading_vec = [0]*dsubc+[0]*(dsubc/2)+[2]*(dsubc/2)
bitloading_vec = [0]*dsubc+[bitloading]*dsubc
bitloading_src = blocks.vector_source_b(bitloading_vec,True,dsubc)
power_vec = [1]*config.data_subcarriers
power_src = blocks.vector_source_f(power_vec,True,dsubc)
else:
self.allocation_buffer = ofdm.allocation_buffer(config.data_subcarriers, config.frame_data_blocks, "tcp://"+options.tx_hostname+":3333",config.coding)
self.bitcount_src = (self.allocation_buffer,0)
bitloading_src = (self.allocation_buffer,1)
power_src = (self.allocation_buffer,2)
self.connect(self.id_dec, self.allocation_buffer)
if options.benchmarking:
self.allocation_buffer.set_allocation([4]*config.data_subcarriers,[1]*config.data_subcarriers)
if options.log:
log_to_file(self, self.bitcount_src, "data/bitcount_src_rx.int")
log_to_file(self, bitloading_src, "data/bitloading_src_rx.char")
log_to_file(self, power_src, "data/power_src_rx.cmplx")
log_to_file(self, self.id_dec, "data/id_dec_rx.short")
## Power Deallocator
pda = self._power_deallocator = multiply_frame_fc(config.frame_data_part, dsubc)
self.connect(pda_in,(pda,0))
self.connect(power_src,(pda,1))
## Demodulator
# if 0:
# ac_vector = [0.0+0.0j]*208
# ac_vector[0] = (2*10**(-0.452))
# ac_vector[3] = (10**(-0.651))
# ac_vector[7] = (10**(-1.151))
# csi_vector_inv=abs(numpy.fft.fft(numpy.sqrt(ac_vector)))**2
# dm_csi = numpy.fft.fftshift(csi_vector_inv) # TODO
dm_csi = [1]*dsubc # TODO
dm_csi = blocks.vector_source_f(dm_csi,True)
## Depuncturer
dp_trig = [0]*(config.frame_data_blocks/2)
dp_trig[0] = 1
dp_trig = blocks.vector_source_b(dp_trig,True) # TODO
if(options.coding):
fo=ofdm.fsm(1,2,[91,121])
if options.interleave:
int_object=trellis.interleaver(2000,666)
deinterlv = trellis.permutation(int_object.K(),int_object.DEINTER(),1,gr.sizeof_float)
demod = self._data_demodulator = generic_softdemapper_vcf(dsubc, config.frame_data_part, config.coding)
#self.connect(dm_csi,blocks.stream_to_vector(gr.sizeof_float,dsubc),(demod,2))
if(options.ideal):
self.connect(dm_csi,blocks.stream_to_vector(gr.sizeof_float,dsubc),(demod,2))
else:
dm_csi_filter = self.dm_csi_filter = filter.single_pole_iir_filter_ff(0.01,dsubc)
self.connect(self.ctf, self.dm_csi_filter,(demod,2))
#log_to_file(self, dm_csi_filter, "data/softs_csi.float")
#self.connect(dm_trig,(demod,3))
else:
demod = self._data_demodulator = generic_demapper_vcb(dsubc, config.frame_data_part)
if options.benchmarking:
# Do receiver benchmarking until the number of frames x symbols are collected
self.connect(pda,blocks.head(gr.sizeof_gr_complex*dsubc, options.N*config.frame_data_blocks),demod)
else:
self.connect(pda,demod)
self.connect(bitloading_src,(demod,1))
if(options.coding):
## Depuncturing
if not options.nopunct:
depuncturing = depuncture_ff(dsubc,0)
frametrigger_bitmap_filter = blocks.vector_source_b([1,0],True)
self.connect(bitloading_src,(depuncturing,1))
self.connect(dp_trig,(depuncturing,2))
## Decoding
chunkdivisor = int(numpy.ceil(config.frame_data_blocks/5.0))
print "Number of chunks at Viterbi decoder: ", chunkdivisor
decoding = self._data_decoder = ofdm.viterbi_combined_fb(fo,dsubc,-1,-1,2,chunkdivisor,[-1,-1,-1,1,1,-1,1,1],ofdm.TRELLIS_EUCLIDEAN)
if options.log and options.coding:
log_to_file(self, decoding, "data/decoded.char")
if not options.nopunct:
log_to_file(self, depuncturing, "data/vit_in.float")
if not options.nopunct:
if options.interleave:
self.connect(demod,deinterlv,depuncturing,decoding)
else:
self.connect(demod,depuncturing,decoding)
else:
self.connect(demod,decoding)
self.connect(self.bitcount_src, multiply_const_ii(1./chunkdivisor), (decoding,1))
if options.scatterplot or options.scatter_plot_before_phase_tracking:
if self.ideal2 is False:
scatter_vec_elem = self._scatter_vec_elem = ofdm.vector_element(dsubc,40)
scatter_s2v = self._scatter_s2v = blocks.stream_to_vector(gr.sizeof_gr_complex,config.frame_data_blocks)
scatter_id_filt = skip(gr.sizeof_gr_complex*dsubc,config.frame_data_blocks)
scatter_id_filt.skip_call(0)
scatter_trig = [0]*config.frame_data_part
scatter_trig[0] = 1
scatter_trig = blocks.vector_source_b(scatter_trig,True)
self.connect(scatter_trig,(scatter_id_filt,1))
self.connect(scatter_vec_elem,scatter_s2v)
if not options.scatter_plot_before_phase_tracking:
print "Enabling Scatterplot for data subcarriers"
self.connect(pda,scatter_id_filt,scatter_vec_elem)
# Work on this
#scatter_sink = ofdm.scatterplot_sink(dsubc)
#self.connect(pda,scatter_sink)
#self.connect(map_src,(scatter_sink,1))
#self.connect(dm_trig,(scatter_sink,2))
#print "Enabled scatterplot gui interface"
self.zmq_probe_scatter = zeromq.pub_sink(gr.sizeof_gr_complex,config.frame_data_blocks, "tcp://*:5560")
self.connect(scatter_s2v, blocks.keep_one_in_n(gr.sizeof_gr_complex*config.frame_data_blocks,20), self.zmq_probe_scatter)
else:
print "Enabling Scatterplot for data before phase tracking"
inner_rx = inner_receiver.before_phase_tracking
#scatter_sink2 = ofdm.scatterplot_sink(dsubc,"phase_tracking")
op = copy.copy(options)
op.enable_erasure_decision = False
new_framesampler = ofdm_frame_sampler(op)
self.connect( inner_rx, new_framesampler )
self.connect( orig_frame_start, (new_framesampler,1) )
new_ps_filter = pilot_subcarrier_filter()
new_pb_filter = fbmc_pilot_block_filter()
self.connect( (new_framesampler,1), (new_pb_filter,1) )
self.connect( new_framesampler, new_pb_filter,
new_ps_filter, scatter_id_filt, scatter_vec_elem )
#self.connect( new_ps_filter, scatter_sink2 )
#self.connect( map_src, (scatter_sink2,1))
#self.connect( dm_trig, (scatter_sink2,2))
if options.log:
if(options.coding):
log_to_file(self, demod, "data/data_stream_out.float")
else:
data_f = gr.char_to_float()
self.connect(demod,data_f)
log_to_file(self, data_f, "data/data_stream_out.float")
if options.sfo_feedback:
used_id_bits = 8
rep_id_bits = config.data_subcarriers/used_id_bits
seed(1)
whitener_pn = [randint(0,1) for i in range(used_id_bits*rep_id_bits)]
id_enc = ofdm.repetition_encoder_sb(used_id_bits,rep_id_bits,whitener_pn)
self.connect( self.id_dec, id_enc )
id_mod = ofdm_bpsk_modulator(dsubc)
self.connect( id_enc, id_mod )
id_mod_conj = gr.conjugate_cc(dsubc)
self.connect( id_mod, id_mod_conj )
id_mult = blocks.multiply_vcc(dsubc)
self.connect( id_bfilt, ( id_mult,0) )
self.connect( id_mod_conj, ( id_mult,1) )
# id_mult_avg = filter.single_pole_iir_filter_cc(0.01,dsubc)
# self.connect( id_mult, id_mult_avg )
id_phase = gr.complex_to_arg(dsubc)
self.connect( id_mult, id_phase )
log_to_file( self, id_phase, "data/id_phase.float" )
est=ofdm.LS_estimator_straight_slope(dsubc)
self.connect(id_phase,est)
slope=blocks.multiply_const_ff(1e6/2/3.14159265)
self.connect( (est,0), slope )
log_to_file( self, slope, "data/slope.float" )
log_to_file( self, (est,1), "data/offset.float" )
# ------------------------------------------------------------------------ #
# Display some information about the setup
if config._verbose:
self._print_verbage()
## debug logging ##
if options.log:
# log_to_file(self,self.ofdm_symbols,"data/unequalized_rx_ofdm_symbols.compl")
# log_to_file(self,self.ofdm_symbols,"data/unequalized_rx_ofdm_symbols.float",mag=True)
fftlen = 256
my_window = window.hamming(fftlen) #.blackmanharris(fftlen)
rxs_sampler = vector_sampler(gr.sizeof_gr_complex,fftlen)
rxs_sampler_vect = concatenate([[1],[0]*49])
rxs_trigger = blocks.vector_source_b(rxs_sampler_vect.tolist(),True)
rxs_window = blocks.multiply_const_vcc(my_window)
rxs_spectrum = gr.fft_vcc(fftlen,True,[],True)
rxs_mag = gr.complex_to_mag(fftlen)
rxs_avg = filter.single_pole_iir_filter_ff(0.01,fftlen)
#rxs_logdb = blocks.nlog10_ff(20.0,fftlen,-20*log10(fftlen))
rxs_logdb = gr.kludge_copy( gr.sizeof_float * fftlen )
rxs_decimate_rate = gr.keep_one_in_n(gr.sizeof_float*fftlen,1)
self.connect(rxs_trigger,(rxs_sampler,1))
self.connect(self.input,rxs_sampler,rxs_window,
rxs_spectrum,rxs_mag,rxs_avg,rxs_logdb, rxs_decimate_rate)
log_to_file( self, rxs_decimate_rate, "data/psd_input.float" )
#output branches
self.publish_rx_performance_measure()
def __init__(self, options):
gr.hier_block2.__init__(self, "transmit_path",
gr.io_signature(0, 0, 0),
gr.io_signature(1, 1, gr.sizeof_gr_complex))
common_options.defaults(options)
config = self.config = station_configuration()
config.data_subcarriers = options.subcarriers
config.cp_length = options.cp_length
config.frame_data_blocks = options.data_blocks
config._verbose = options.verbose
config.fft_length = options.fft_length
config.dc_null = options.dc_null
config.training_data = default_block_header(config.data_subcarriers,
config.fft_length,
config.dc_null, options)
config.coding = options.coding
config.bandwidth = options.bandwidth
config.gui_frame_rate = options.gui_frame_rate
config.fbmc = options.fbmc
config.frame_id_blocks = 1 # FIXME
# digital rms amplitude sent to USRP
rms_amp = options.rms_amplitude
self._options = copy.copy(options)
config.block_length = config.fft_length + config.cp_length
config.frame_data_part = config.frame_data_blocks + config.frame_id_blocks
config.frame_length = config.frame_data_part + \
config.training_data.no_pilotsyms
config.subcarriers = config.data_subcarriers + \
config.training_data.pilot_subcarriers
config.virtual_subcarriers = config.fft_length - config.subcarriers - config.dc_null
# default values if parameters not set
if rms_amp is None:
rms_amp = math.sqrt(config.subcarriers)
config.rms_amplitude = rms_amp
# check some bounds
if config.fft_length < config.subcarriers:
raise SystemError, "Subcarrier number must be less than FFT length"
if config.fft_length < config.cp_length:
raise SystemError, "Cyclic prefix length must be less than FFT length"
## shortcuts
blen = config.block_length
flen = config.frame_length
dsubc = config.data_subcarriers
vsubc = config.virtual_subcarriers
# Adaptive Transmitter Concept
used_id_bits = config.used_id_bits = 8 #TODO: no constant in source code
rep_id_bits = config.rep_id_bits = config.data_subcarriers / used_id_bits #BPSK
if config.data_subcarriers % used_id_bits <> 0:
raise SystemError, "Data subcarriers need to be multiple of %d" % (
used_id_bits)
# adapt OFDM frame rate and GUI display frame rate
self.keep_frame_n = int(
1.0 / (config.frame_length *
(config.cp_length + config.fft_length) / config.bandwidth) /
config.gui_frame_rate)
## Allocation Control
self.allocation_src = allocation_src(
config.data_subcarriers, config.frame_data_blocks, config.coding,
"tcp://*:3333", "tcp://" + options.rx_hostname + ":3322")
if options.static_allocation: #DEBUG
# how many bits per subcarrier
if options.coding:
mode = 1 # Coding mode 1-9
bitspermode = [0.5, 1, 1.5, 2, 3, 4, 4.5, 5,
6] # Information bits per mode
modulbitspermode = [1, 2, 2, 4, 4, 6, 6, 6,
8] # Coding bits per mode
bitcount_vec = [
(int)(config.data_subcarriers * config.frame_data_blocks *
bitspermode[mode - 1])
]
modul_bitcount_vec = [
config.data_subcarriers * config.frame_data_blocks *
modulbitspermode[mode - 1]
]
bitcount_src = blocks.vector_source_i(bitcount_vec, True, 1)
modul_bitcount_src = blocks.vector_source_i(
modul_bitcount_vec, True, 1)
bitloading = mode
else:
bitloading = 1
bitcount_vec = [
config.data_subcarriers * config.frame_data_blocks *
bitloading
]
bitcount_src = blocks.vector_source_i(bitcount_vec, True, 1)
modul_bitcount_src = bitcount_src
# id's for frames
id_vec = range(0, 256)
id_src = blocks.vector_source_s(id_vec, True, 1)
# bitloading for ID symbol and then once for data symbols
#bitloading_vec = [1]*dsubc+[0]*(dsubc/2)+[2]*(dsubc/2)
#test_allocation = [bitloading]*(int)(config.data_subcarriers/8)+ [0]*(int)(config.data_subcarriers/4*3) + [bitloading]*(int)(config.data_subcarriers/8)
#bitloading_vec = [1]*dsubc+[bitloading]*dsubc
test_allocation = [bitloading] * dsubc
bitloading_vec = [bitloading] * dsubc + test_allocation
bitloading_src = blocks.vector_source_b(bitloading_vec, True,
dsubc)
# bitcount for frames
#bitcount_vec = [config.data_subcarriers*config.frame_data_blocks*bitloading]
bitcount_vec = [config.frame_data_blocks * sum(test_allocation)]
bitcount_src = blocks.vector_source_i(bitcount_vec, True, 1)
# power loading, here same for all symbols
#power_vec = [1]*(int)(config.data_subcarriers/8)+ [0]*(int)(config.data_subcarriers/4*3) + [1]*(int)(config.data_subcarriers/8)
power_vec = [1] * config.data_subcarriers
power_src = blocks.vector_source_f(power_vec, True, dsubc)
# mux control stream to mux id and data bits
mux_vec = [0] * dsubc + [1] * bitcount_vec[0]
mux_ctrl = blocks.vector_source_b(mux_vec, True, 1)
else:
id_src = (self.allocation_src, 0)
bitcount_src = (self.allocation_src, 4)
bitloading_src = (self.allocation_src, 2)
power_src = (self.allocation_src, 1)
if options.coding:
modul_bitcount_src = (self.allocation_src, 5)
else:
modul_bitcount_src = bitcount_src
mux_ctrl = ofdm.tx_mux_ctrl(dsubc)
self.connect(modul_bitcount_src, mux_ctrl)
#Initial allocation
self.allocation_src.set_allocation([2] * config.data_subcarriers,
[1] * config.data_subcarriers)
self.allocation_src.set_allocation_scheme(0)
if options.benchmarking:
self.allocation_src.set_allocation(
[4] * config.data_subcarriers,
[1] * config.data_subcarriers)
if options.lab_special_case:
self.allocation_src.set_allocation(
[0] * (config.data_subcarriers / 4) + [2] *
(config.data_subcarriers / 2) + [0] *
(config.data_subcarriers / 4), [1] * config.data_subcarriers)
if options.log:
log_to_file(self, id_src, "data/id_src.short")
log_to_file(self, bitcount_src, "data/bitcount_src.int")
log_to_file(self, bitloading_src, "data/bitloading_src.char")
log_to_file(self, power_src, "data/power_src.cmplx")
## GUI probe output
zmq_probe_bitloading = zeromq.pub_sink(gr.sizeof_char, dsubc,
"tcp://*:4445")
# also skip ID symbol bitloading with keep_one_in_n (side effect)
# factor 2 for bitloading because we have two vectors per frame, one for id symbol and one for all payload/data symbols
# factor config.frame_data_part for power because there is one vector per ofdm symbol per frame
self.connect(bitloading_src,
blocks.keep_one_in_n(gr.sizeof_char * dsubc, 2 * 40),
zmq_probe_bitloading)
zmq_probe_power = zeromq.pub_sink(gr.sizeof_float, dsubc,
"tcp://*:4444")
#self.connect(power_src, blocks.keep_one_in_n(gr.sizeof_gr_complex*dsubc,40), blocks.complex_to_real(dsubc), zmq_probe_power)
self.connect(power_src,
blocks.keep_one_in_n(gr.sizeof_float * dsubc, 40),
zmq_probe_power)
## Workaround to avoid periodic structure
seed(1)
whitener_pn = [
randint(0, 1) for i in range(used_id_bits * rep_id_bits)
]
## ID Encoder
id_enc = self._id_encoder = repetition_encoder_sb(
used_id_bits, rep_id_bits, whitener_pn)
self.connect(id_src, id_enc)
if options.log:
id_enc_f = gr.char_to_float()
self.connect(id_enc, id_enc_f)
log_to_file(self, id_enc_f, "data/id_enc_out.float")
## Reference Data Source
ber_ref_src = ber_reference_source(self._options)
self.connect(id_src, (ber_ref_src, 0))
self.connect(bitcount_src, (ber_ref_src, 1))
if options.log:
log_to_file(self, ber_ref_src, "data/ber_rec_src_tx.char")
if options.log:
log_to_file(self, btrig, "data/bitmap_trig.char")
## Bitmap Update Trigger for puncturing
if not options.nopunct:
bmaptrig_stream_puncturing = [
1
] + [0] * (config.frame_data_blocks / 2 - 1)
btrig_puncturing = self._bitmap_trigger_puncturing = blocks.vector_source_b(
bmaptrig_stream_puncturing, True)
bmapsrc_stream_puncturing = [1] * dsubc + [2] * dsubc
bsrc_puncturing = self._bitmap_src_puncturing = blocks.vector_source_b(
bmapsrc_stream_puncturing, True, dsubc)
if options.log and options.coding and not options.nopunct:
log_to_file(self, btrig_puncturing,
"data/bitmap_trig_puncturing.char")
## Frame Trigger
ftrig_stream = [1] + [0] * (config.frame_data_part - 1)
ftrig = self._frame_trigger = blocks.vector_source_b(
ftrig_stream, True)
## Data Multiplexer
# Input 0: control stream
# Input 1: encoded ID stream
# Inputs 2..n: data streams
dmux = self._data_multiplexer = stream_controlled_mux_b()
self.connect(mux_ctrl, (dmux, 0))
self.connect(id_enc, (dmux, 1))
if options.coding:
fo = trellis.fsm(1, 2, [91, 121])
encoder = self._encoder = trellis.encoder_bb(fo, 0)
unpack = self._unpack = blocks.unpack_k_bits_bb(2)
self.connect(ber_ref_src, encoder, unpack)
if options.interleave:
int_object = trellis.interleaver(2000, 666)
interlv = trellis.permutation(int_object.K(),
int_object.INTER(), 1,
gr.sizeof_char)
if not options.nopunct:
bmaptrig_stream_puncturing = [
1
] + [0] * (config.frame_data_blocks / 2 - 1)
btrig_puncturing = self._bitmap_trigger_puncturing = blocks.vector_source_b(
bmaptrig_stream_puncturing, True)
puncturing = self._puncturing = puncture_bb(
config.data_subcarriers)
self.connect(bitloading_src, (puncturing, 1))
self.connect(self._bitmap_trigger_puncturing, (puncturing, 2))
self.connect(unpack, puncturing)
last_block = puncturing
if options.interleave:
self.connect(last_block, interlv)
last_block = interlv
if options.benchmarking:
self.connect(last_block,
blocks.head(gr.sizeof_char, options.N),
(dmux, 2))
else:
self.connect(last_block, (dmux, 2))
else:
if options.benchmarking:
self.connect(unpack, blocks.head(gr.sizeof_char,
options.N), (dmux, 2))
else:
self.connect(unpack, (dmux, 2))
else:
if options.benchmarking:
self.connect(ber_ref_src, blocks.head(gr.sizeof_char,
options.N), (dmux, 2))
else:
self.connect(ber_ref_src, (dmux, 2))
if options.log:
dmux_f = gr.char_to_float()
self.connect(dmux, dmux_f)
log_to_file(self, dmux_f, "data/dmux_out.float")
## Modulator
mod = self._modulator = generic_mapper_bcv(config.data_subcarriers,
config.coding,
config.frame_data_part)
self.connect(dmux, (mod, 0))
self.connect(bitloading_src, (mod, 1))
#log_to_file(self, mod, "data/mod_out.compl")
if options.log:
log_to_file(self, mod, "data/mod_out.compl")
modi = blocks.complex_to_imag(config.data_subcarriers)
modr = blocks.complex_to_real(config.data_subcarriers)
self.connect(mod, modi)
self.connect(mod, modr)
log_to_file(self, modi, "data/mod_imag_out.float")
log_to_file(self, modr, "data/mod_real_out.float")
## Power allocator
pa = self._power_allocator = multiply_frame_fc(config.frame_data_part,
config.data_subcarriers)
self.connect(mod, (pa, 0))
self.connect(power_src, (pa, 1))
if options.log:
log_to_file(self, pa, "data/pa_out.compl")
# Standard Transmitter Parts
## Pilot subcarriers
psubc = self._pilot_subcarrier_inserter = pilot_subcarrier_inserter()
self.connect(pa, psubc)
if options.log:
log_to_file(self, psubc, "data/psubc_out.compl")
## Add virtual subcarriers
if config.fft_length > config.subcarriers:
vsubc = self._virtual_subcarrier_extender = \
vector_padding_dc_null(config.subcarriers, config.fft_length,config.dc_null)
self.connect(psubc, vsubc)
else:
vsubc = self._virtual_subcarrier_extender = psubc
if options.log:
log_to_file(self, vsubc, "data/vsubc_out.compl")
## IFFT, no window, block shift
ifft = self._ifft = fft_blocks.fft_vcc(config.fft_length, False, [],
True)
self.connect(vsubc, ifft)
if options.log:
log_to_file(self, ifft, "data/ifft_out.compl")
## Pilot blocks (preambles)
pblocks = self._pilot_block_inserter = pilot_block_inserter(5, False)
self.connect(ifft, pblocks)
if options.log:
log_to_file(self, pblocks, "data/pilot_block_ins_out.compl")
## Cyclic Prefix
cp = self._cyclic_prefixer = cyclic_prefixer(config.fft_length,
config.block_length)
self.connect(pblocks, cp)
lastblock = cp
if options.log:
log_to_file(self, cp, "data/cp_out.compl")
#Digital Amplifier for resource allocation
#if not options.coding:
rep = blocks.repeat(gr.sizeof_gr_complex,
config.frame_length * config.block_length)
amp = blocks.multiply_cc()
self.connect(lastblock, (amp, 0))
self.connect((self.allocation_src, 3), rep, (amp, 1))
lastblock = amp
## Digital Amplifier
#amp = self._amplifier = gr.multiply_const_cc(1)
amp = self._amplifier = ofdm.multiply_const_ccf(1.0)
self.connect(lastblock, amp)
self.set_rms_amplitude(rms_amp)
if options.log:
log_to_file(self, amp, "data/amp_tx_out.compl")
## Tx parameters
bandwidth = options.bandwidth or 2e6
bits = 8 * config.data_subcarriers * config.frame_data_blocks # max. QAM256
samples_per_frame = config.frame_length * config.block_length
tb = samples_per_frame / bandwidth
# set dummy carrier frequency if none available due to baseband mode
if (options.tx_freq is None):
options.tx_freq = 0.0
self.tx_parameters = {'carrier_frequency':options.tx_freq/1e9,'fft_size':config.fft_length, 'cp_size':config.cp_length \
, 'subcarrier_spacing':options.bandwidth/config.fft_length/1e3 \
, 'data_subcarriers':config.data_subcarriers, 'bandwidth':options.bandwidth/1e6 \
, 'frame_length':config.frame_length \
, 'symbol_time':(config.cp_length + config.fft_length)/options.bandwidth*1e6, 'max_data_rate':(bits/tb)/1e6}
## Setup Output
self.connect(amp, self)
# Display some information about the setup
if config._verbose:
self._print_verbage()
def setup_test07(self):
print "... benchmarking BPSK demapper"
self.mode = 1
bitspermode = [0.5, 1, 1.5, 2, 3, 4, 4.5, 5, 6]
self.data_subcarriers = 200
self.chunkdivisor = 2
bitcount_vec = [
(int)(self.data_subcarriers * 10 * bitspermode[self.mode - 1])
]
dm_csi = [1] * self.data_subcarriers # TODO
self.dm_csi = blocks.vector_source_f(dm_csi, True)
self.blks = self.N * (10 + 1)
self.tb = gr.top_block()
self.bitcount_src = blocks.vector_source_i(bitcount_vec, True, 1)
self.depuncturing = depuncture_ff(self.data_subcarriers, 0)
bmaptrig_stream_puncturing = [1] + [0] * (10 / 2 - 1)
self.bitmap_trigger_puncturing = blocks.vector_source_b(
bmaptrig_stream_puncturing, True)
self.data_decoder = ofdm.viterbi_combined_fb(
self.fo, self.data_subcarriers, -1, -1, 2, self.chunkdivisor,
[-1, -1, -1, 1, 1, -1, 1, 1], ofdm.TRELLIS_EUCLIDEAN)
if self.interleave:
int_object = trellis.interleaver(2000, 666)
self.deinterlv = trellis.permutation(int_object.K(),
int_object.DEINTER(), 1,
gr.sizeof_float)
#self.bitmap = [self.nobits]*self.data_subcarriers
self.demodulator = generic_softdemapper_vcf(self.data_subcarriers, 11,
self.coding)
#const = self.demodulator.get_constellation( self.nobits )
#assert( len( const ) == 2**self.nobits )
self.bitdata = [
random() + 1j * random()
for i in range(self.blks * self.data_subcarriers)
]
self.src = blocks.vector_source_c(self.bitdata, False,
self.data_subcarriers)
#self.src = symbol_random_src( const, self.data_subcarriers )
self.bitmap = [self.mode] * self.data_subcarriers
self.bitmap_src = blocks.vector_source_b(self.bitmap, True,
self.data_subcarriers)
#self.bmaptrig_stream = [1, 2]+[0]*(11-2)
#self.bitmap_trigger = blocks.vector_source_b(self.bmaptrig_stream, True)
self.snk = blocks.null_sink(gr.sizeof_char)
#Connect blocks
self.tb.connect(self.src, self.demodulator)
if self.interleave:
self.tb.connect(self.demodulator, self.deinterlv,
self.depuncturing, self.data_decoder, self.snk)
else:
self.tb.connect(self.demodulator, self.depuncturing,
self.data_decoder, self.snk)
self.tb.connect(self.bitmap_src, (self.demodulator, 1))
self.tb.connect(
self.dm_csi,
blocks.stream_to_vector(gr.sizeof_float, self.data_subcarriers),
(self.demodulator, 2))
self.tb.connect(self.bitmap_src, (self.depuncturing, 1))
self.tb.connect(self.bitmap_trigger_puncturing, (self.depuncturing, 2))
self.tb.connect(self.bitcount_src,
ofdm.multiply_const_ii(1. / self.chunkdivisor),
(self.data_decoder, 1))
def __init__(self):
gr.top_block.__init__(self, "Top Block")
Qt.QWidget.__init__(self)
self.setWindowTitle("Top Block")
try:
self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
except:
pass
self.top_scroll_layout = Qt.QVBoxLayout()
self.setLayout(self.top_scroll_layout)
self.top_scroll = Qt.QScrollArea()
self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
self.top_scroll_layout.addWidget(self.top_scroll)
self.top_scroll.setWidgetResizable(True)
self.top_widget = Qt.QWidget()
self.top_scroll.setWidget(self.top_widget)
self.top_layout = Qt.QVBoxLayout(self.top_widget)
self.top_grid_layout = Qt.QGridLayout()
self.top_layout.addLayout(self.top_grid_layout)
self.settings = Qt.QSettings("GNU Radio", "top_block")
self.restoreGeometry(self.settings.value("geometry").toByteArray())
##################################################
# Variables
##################################################
self.used_id_bits = used_id_bits = 8
self.subcarriers = subcarriers = 208
self.id_blocks = id_blocks = 1
self.fft_length = fft_length = 256
self.fbmc = fbmc = 1
self.estimation_preamble = estimation_preamble = 0
self.data_blocks = data_blocks = 10
self.training_data = training_data = default_block_header(subcarriers,fft_length,fbmc,estimation_preamble,[])
self.repeated_id_bits = repeated_id_bits = subcarriers/used_id_bits
self.data_part = data_part = data_blocks + id_blocks
self.whitener_seed = whitener_seed = seed(1)
self.whitener_pn = whitener_pn = [randint(0,1) for i in range(used_id_bits*repeated_id_bits)]
self.variable_function_probe_2 = variable_function_probe_2 = 0
self.variable_function_probe_1 = variable_function_probe_1 = 0
self.variable_function_probe_0 = variable_function_probe_0 = 0
self.tx_hostname = tx_hostname = "localhost"
self.samp_rate = samp_rate = 4*250000
self.interleaver = interleaver = trellis.interleaver(2000,666)
self.frame_length = frame_length = 2*data_part + training_data.fbmc_no_preambles
self.filter_length = filter_length = 4
self.disable_freq_sync = disable_freq_sync = 1
self.coding = coding = 1
self.chunkdivisor = chunkdivisor = int(numpy.ceil(data_blocks/5.0))
self.ber_window = ber_window = 100000
self.amplitude = amplitude = 1
self.SNR = SNR = 40
##################################################
# Blocks
##################################################
self._amplitude_layout = Qt.QVBoxLayout()
self._amplitude_tool_bar = Qt.QToolBar(self)
self._amplitude_layout.addWidget(self._amplitude_tool_bar)
self._amplitude_tool_bar.addWidget(Qt.QLabel("amplitude"+": "))
class qwt_counter_pyslot(Qwt.QwtCounter):
def __init__(self, parent=None):
Qwt.QwtCounter.__init__(self, parent)
@pyqtSlot('double')
def setValue(self, value):
super(Qwt.QwtCounter, self).setValue(value)
self._amplitude_counter = qwt_counter_pyslot()
self._amplitude_counter.setRange(0, 1, 0.02)
self._amplitude_counter.setNumButtons(2)
self._amplitude_counter.setValue(self.amplitude)
self._amplitude_tool_bar.addWidget(self._amplitude_counter)
self._amplitude_counter.valueChanged.connect(self.set_amplitude)
self._amplitude_slider = Qwt.QwtSlider(None, Qt.Qt.Horizontal, Qwt.QwtSlider.BottomScale, Qwt.QwtSlider.BgSlot)
self._amplitude_slider.setRange(0, 1, 0.02)
self._amplitude_slider.setValue(self.amplitude)
self._amplitude_slider.setMinimumWidth(200)
self._amplitude_slider.valueChanged.connect(self.set_amplitude)
self._amplitude_layout.addWidget(self._amplitude_slider)
self.top_layout.addLayout(self._amplitude_layout)
self.tx_rpc_manager_0 = tx_rpc_manager(fft_length, subcarriers, data_blocks, frame_length, 0, 0.0, samp_rate)
self.tigr_transmit_control_0 = tigr_transmit_control(
subcarriers=subcarriers,
fft_length=fft_length,
used_id_bits=used_id_bits,
estimation_preamble=estimation_preamble,
filter_length=filter_length,
fbmc=fbmc,
data_blocks=data_blocks,
data_part=data_part,
repeated_id_bits=repeated_id_bits,
coding=coding,
)
self.tigr_scatterplot_0 = tigr_scatterplot(
subcarriers=subcarriers,
fbmc=fbmc,
fft_length=fft_length,
estimation_preamble=estimation_preamble,
data_blocks=data_blocks,
data_part=11,
frame_length=frame_length,
)
self.rx_rpc_manager_0 = rx_rpc_manager()
self.rms = fbmc_rms_amplifier(amplitude, subcarriers)
self.zeromq_pub_sink_1 = zeromq.pub_sink(gr.sizeof_float, subcarriers, "tcp://*:5559", 100)
self.zeromq_pub_sink_0 = zeromq.pub_sink(gr.sizeof_float, 1, "tcp://*:5557", 100)
def _variable_function_probe_2_probe():
while True:
val = self.rx_rpc_manager_0.add_set_scatter_subcarrier_interface(self.tigr_scatterplot_0.ofdm_vector_element_0.set_element)
try:
self.set_variable_function_probe_2(val)
except AttributeError:
pass
time.sleep(1.0 / (0.000000001))
_variable_function_probe_2_thread = threading.Thread(target=_variable_function_probe_2_probe)
_variable_function_probe_2_thread.daemon = True
_variable_function_probe_2_thread.start()
def _variable_function_probe_1_probe():
while True:
val = self.tx_rpc_manager_0.add_tx_modulation_interface(self.tigr_transmit_control_0.ofdm_allocation_src_0.set_allocation)
try:
self.set_variable_function_probe_1(val)
except AttributeError:
pass
time.sleep(1.0 / (0.000000001))
_variable_function_probe_1_thread = threading.Thread(target=_variable_function_probe_1_probe)
_variable_function_probe_1_thread.daemon = True
_variable_function_probe_1_thread.start()
def _variable_function_probe_0_probe():
while True:
val = self.tx_rpc_manager_0.add_tx_ampl_interface(self.rms.set_rms_amplitude)
try:
self.set_variable_function_probe_0(val)
except AttributeError:
pass
time.sleep(1.0 / (0.000000001))
_variable_function_probe_0_thread = threading.Thread(target=_variable_function_probe_0_probe)
_variable_function_probe_0_thread.daemon = True
_variable_function_probe_0_thread.start()
self.trellis_permutation_0 = trellis.permutation(interleaver.K(), (interleaver.DEINTER()), 1, gr.sizeof_float*1)
self.tigr_fbmc_snr_estimator_0 = tigr_fbmc_snr_estimator(
subcarriers=subcarriers,
fbmc=fbmc,
fft_length=fft_length,
estimation_preamble=estimation_preamble,
frame_length=frame_length,
)
self.tigr_fbmc_inner_receiver_0 = tigr_fbmc_inner_receiver(
subcarriers=subcarriers,
fft_length=fft_length,
data_blocks=data_blocks,
estimation_preamble=estimation_preamble,
filter_length=filter_length,
frame_length=frame_length,
disable_freq_sync=disable_freq_sync,
)
self.tigr_ber_measurement_0 = tigr_ber_measurement(
subcarriers=subcarriers,
fbmc=fbmc,
fft_length=fft_length,
estimation_preamble=estimation_preamble,
ber_window=ber_window,
data_blocks=data_blocks,
)
self.single_pole_iir_filter_xx_0 = filter.single_pole_iir_filter_ff(0.1, subcarriers)
self.ofdm_viterbi_combined_fb_0 = ofdm.viterbi_combined_fb(ofdm.fsm(ofdm.fsm(1,2,[91,121])), subcarriers, -1, -1, 2, chunkdivisor, ([-1,-1,-1,1,1,-1,1,1]), ofdm.TRELLIS_EUCLIDEAN)
self.ofdm_vector_sampler_0 = ofdm.vector_sampler(gr.sizeof_gr_complex*subcarriers, 1)
self.ofdm_vector_padding_0 = ofdm.vector_padding(subcarriers, fft_length, -1)
self.ofdm_multiply_frame_fc_0 = ofdm.multiply_frame_fc(data_part, subcarriers)
self.ofdm_multiply_const_ii_0 = ofdm.multiply_const_ii(1./int(numpy.ceil(data_blocks/5.0)))
self.ofdm_generic_softdemapper_vcf_0 = ofdm.generic_softdemapper_vcf(subcarriers, data_part, 1)
self.ofdm_fbmc_separate_vcvc_1 = ofdm.fbmc_separate_vcvc(fft_length, 2)
self.ofdm_fbmc_polyphase_network_vcvc_1 = ofdm.fbmc_polyphase_network_vcvc(fft_length, filter_length, filter_length*fft_length-1, False)
self.ofdm_fbmc_polyphase_network_vcvc_0 = ofdm.fbmc_polyphase_network_vcvc(fft_length, filter_length, filter_length*fft_length-1, False)
self.ofdm_fbmc_pilot_block_inserter_0 = fbmc_pilot_block_inserter(subcarriers, data_part, training_data, 5)
self.ofdm_fbmc_pilot_block_filter_0 = fbmc_pilot_block_filter(subcarriers, frame_length, data_part, training_data)
self.ofdm_fbmc_overlapping_parallel_to_serial_vcc_0 = ofdm.fbmc_overlapping_parallel_to_serial_vcc(fft_length)
self.ofdm_fbmc_oqam_preprocessing_vcvc_0 = ofdm.fbmc_oqam_preprocessing_vcvc(subcarriers, 0, 0)
self.ofdm_fbmc_frame_sampler_0 = fbmc_frame_sampler(subcarriers, frame_length, data_part, training_data)
self.ofdm_fbmc_beta_multiplier_vcvc_0 = ofdm.fbmc_beta_multiplier_vcvc(fft_length, filter_length, fft_length*fft_length-1, 0)
self.ofdm_dynamic_trigger_ib_0 = ofdm.dynamic_trigger_ib(0)
self.ofdm_depuncture_ff_0 = ofdm.depuncture_ff(subcarriers, 0)
self.ofdm_coded_bpsk_soft_decoder_0 = ofdm.coded_bpsk_soft_decoder(subcarriers, used_id_bits, (whitener_pn))
self.ofdm_allocation_buffer_0 = ofdm.allocation_buffer(subcarriers, data_blocks, "tcp://"+tx_hostname+":3333", 1)
self.fft_vxx_1 = fft.fft_vcc(fft_length, False, ([]), True, 1)
self.channels_channel_model_0 = channels.channel_model(
noise_voltage=math.sqrt(1.0*fft_length/subcarriers)*math.sqrt(0.5)*10**(-SNR/20.0),
frequency_offset=0.0/fft_length,
epsilon=1,
taps=((1.0 ), ),
noise_seed=0,
block_tags=False
)
self.blocks_vector_source_x_0 = blocks.vector_source_b([1] + [0]*(data_blocks/2-1), True, 1, [])
self.blocks_throttle_0 = blocks.throttle(gr.sizeof_gr_complex*1, samp_rate,True)
self.blocks_keep_one_in_n_1 = blocks.keep_one_in_n(gr.sizeof_float*subcarriers, 20)
self.blks2_selector_0 = grc_blks2.selector(
item_size=gr.sizeof_float*1,
num_inputs=2,
num_outputs=1,
input_index=0,
output_index=0,
)
##################################################
# Connections
##################################################
self.connect((self.ofdm_fbmc_polyphase_network_vcvc_0, 0), (self.ofdm_fbmc_overlapping_parallel_to_serial_vcc_0, 0))
self.connect((self.ofdm_fbmc_polyphase_network_vcvc_1, 0), (self.ofdm_fbmc_overlapping_parallel_to_serial_vcc_0, 1))
self.connect((self.ofdm_fbmc_separate_vcvc_1, 1), (self.ofdm_fbmc_polyphase_network_vcvc_1, 0))
self.connect((self.ofdm_fbmc_oqam_preprocessing_vcvc_0, 0), (self.ofdm_fbmc_pilot_block_inserter_0, 0))
self.connect((self.ofdm_fbmc_pilot_block_inserter_0, 0), (self.ofdm_vector_padding_0, 0))
self.connect((self.ofdm_fbmc_beta_multiplier_vcvc_0, 0), (self.fft_vxx_1, 0))
self.connect((self.fft_vxx_1, 0), (self.ofdm_fbmc_separate_vcvc_1, 0))
self.connect((self.tigr_transmit_control_0, 0), (self.ofdm_fbmc_oqam_preprocessing_vcvc_0, 0))
self.connect((self.single_pole_iir_filter_xx_0, 0), (self.blocks_keep_one_in_n_1, 0))
self.connect((self.ofdm_fbmc_frame_sampler_0, 1), (self.ofdm_fbmc_pilot_block_filter_0, 1))
self.connect((self.ofdm_fbmc_frame_sampler_0, 0), (self.ofdm_fbmc_pilot_block_filter_0, 0))
self.connect((self.ofdm_fbmc_pilot_block_filter_0, 1), (self.ofdm_vector_sampler_0, 1))
self.connect((self.ofdm_vector_sampler_0, 0), (self.ofdm_coded_bpsk_soft_decoder_0, 0))
self.connect((self.ofdm_coded_bpsk_soft_decoder_0, 0), (self.ofdm_allocation_buffer_0, 0))
self.connect((self.ofdm_allocation_buffer_0, 1), (self.ofdm_generic_softdemapper_vcf_0, 1))
self.connect((self.single_pole_iir_filter_xx_0, 0), (self.ofdm_generic_softdemapper_vcf_0, 2))
self.connect((self.ofdm_generic_softdemapper_vcf_0, 0), (self.trellis_permutation_0, 0))
self.connect((self.ofdm_depuncture_ff_0, 0), (self.ofdm_viterbi_combined_fb_0, 0))
self.connect((self.ofdm_allocation_buffer_0, 1), (self.ofdm_depuncture_ff_0, 1))
self.connect((self.blocks_vector_source_x_0, 0), (self.ofdm_depuncture_ff_0, 2))
self.connect((self.ofdm_allocation_buffer_0, 0), (self.ofdm_multiply_const_ii_0, 0))
self.connect((self.ofdm_multiply_const_ii_0, 0), (self.ofdm_viterbi_combined_fb_0, 1))
self.connect((self.ofdm_fbmc_separate_vcvc_1, 0), (self.ofdm_fbmc_polyphase_network_vcvc_0, 0))
self.connect((self.ofdm_viterbi_combined_fb_0, 0), (self.tigr_ber_measurement_0, 2))
self.connect((self.ofdm_dynamic_trigger_ib_0, 0), (self.tigr_ber_measurement_0, 3))
self.connect((self.ofdm_fbmc_frame_sampler_0, 0), (self.tigr_fbmc_snr_estimator_0, 0))
self.connect((self.ofdm_fbmc_frame_sampler_0, 1), (self.tigr_fbmc_snr_estimator_0, 1))
self.connect((self.tigr_fbmc_inner_receiver_0, 1), (self.ofdm_fbmc_frame_sampler_0, 1))
self.connect((self.tigr_fbmc_inner_receiver_0, 2), (self.ofdm_fbmc_frame_sampler_0, 0))
self.connect((self.rms, 0), (self.blocks_throttle_0, 0))
self.connect((self.tigr_fbmc_inner_receiver_0, 3), (self.zeromq_pub_sink_0, 0))
self.connect((self.blocks_keep_one_in_n_1, 0), (self.zeromq_pub_sink_1, 0))
self.connect((self.ofdm_vector_padding_0, 0), (self.ofdm_fbmc_beta_multiplier_vcvc_0, 0))
self.connect((self.tigr_fbmc_inner_receiver_0, 0), (self.single_pole_iir_filter_xx_0, 0))
self.connect((self.ofdm_fbmc_overlapping_parallel_to_serial_vcc_0, 0), (self.rms, 0))
self.connect((self.ofdm_allocation_buffer_0, 0), (self.ofdm_dynamic_trigger_ib_0, 0))
self.connect((self.ofdm_coded_bpsk_soft_decoder_0, 0), (self.tigr_ber_measurement_0, 0))
self.connect((self.ofdm_allocation_buffer_0, 0), (self.tigr_ber_measurement_0, 1))
self.connect((self.blks2_selector_0, 0), (self.ofdm_depuncture_ff_0, 0))
self.connect((self.trellis_permutation_0, 0), (self.blks2_selector_0, 1))
self.connect((self.ofdm_generic_softdemapper_vcf_0, 0), (self.blks2_selector_0, 0))
self.connect((self.blocks_throttle_0, 0), (self.channels_channel_model_0, 0))
self.connect((self.channels_channel_model_0, 0), (self.tigr_fbmc_inner_receiver_0, 0))
self.connect((self.ofdm_fbmc_pilot_block_filter_0, 0), (self.ofdm_vector_sampler_0, 0))
self.connect((self.ofdm_allocation_buffer_0, 2), (self.ofdm_multiply_frame_fc_0, 1))
self.connect((self.ofdm_fbmc_pilot_block_filter_0, 0), (self.ofdm_multiply_frame_fc_0, 0))
self.connect((self.ofdm_multiply_frame_fc_0, 0), (self.tigr_scatterplot_0, 0))
self.connect((self.ofdm_multiply_frame_fc_0, 0), (self.ofdm_generic_softdemapper_vcf_0, 0))