def __init__(self):
gr.top_block.__init__(self)
parser = OptionParser(option_class=eng_option, usage="%prog: [options] input-filename")
parser.add_option("-T", "--tx-subdev-spec", type="subdev", default=(0, 0),
help="select USRP Tx side A or B [default=A]")
parser.add_option("-f", "--freq", type="eng_float", default=227.36e6,
help="set frequency to FREQ [default=%default]")
parser.add_option("-g", "--tx-gain", type="eng_float", default=None,
help="set transmit gain in dB (default is midpoint)")
parser.add_option('-v', '--verbose', action="store_true", default=False,
help="verbose output")
parser.add_option('-a', '--antenna', type="string", default="TX/RX",
help="select antenna")
(options, args) = parser.parse_args ()
if len(args)!=1:
parser.print_help()
sys.exit(1)
else:
self.filename = args[0]
# if gr.enable_realtime_scheduling() != gr.RT_OK:
# print "-> failed to enable realtime scheduling"
interp = 64
self.sample_rate = 128e6/interp
self.dab_params = dab.parameters.dab_parameters(mode=1, sample_rate=2000000, verbose=options.verbose)
self.src = blocks.file_source(gr.sizeof_char, self.filename)
self.trigsrc = blocks.vector_source_b([1]+[0]*(self.dab_params.symbols_per_frame-1),True)
self.s2v = blocks.stream_to_vector(gr.sizeof_char, 384)
self.mod = dab.ofdm_mod(self.dab_params, verbose=options.verbose)
#self.sink = usrp.sink_c(interp_rate = interp)
self.sink = uhd.usrp_sink("",uhd.io_type.COMPLEX_FLOAT32,1)
self.sink.set_samp_rate(self.sample_rate)
#self.sink.set_mux(usrp.determine_tx_mux_value(self.sink, options.tx_subdev_spec))
#self.subdev = usrp.selected_subdev(self.sink, options.tx_subdev_spec)
self.sink.set_antenna(options.antenna)
print "--> using sample rate: " + str(self.sample_rate)
self.connect(self.src, self.s2v, self.mod, self.sink)
self.connect(self.trigsrc, (self.mod,1))
# tune frequency
self.sink.set_center_freq(options.freq)
# set gain
if options.tx_gain is None:
# if no gain was specified, use the mid-point in dB
g = self.sink.get_gain_range()
options.tx_gain = float(g.start()+g.stop())/2
self.sink.set_gain(options.tx_gain)
def setup_flowgraph(self, mode, ber_skipbytes=0): # parameters self.dp.set_mode(mode) self.rp.set_mode(mode) self.vlen = self.dp.num_carriers/4 self.ber_skipbytes = ber_skipbytes # trigger signals frame_trigger = [1]+[0]*(self.dp.symbols_per_frame-2) self.frame_start = frame_trigger*(len(self.random_bytes)/(self.vlen*(self.dp.symbols_per_frame-1)))+frame_trigger[0:(len(self.random_bytes)/self.vlen)%(self.dp.symbols_per_frame-1)] # sources/sinks self.source = gr.vector_source_b(self.random_bytes, False) self.trig = gr.vector_source_b(self.frame_start, False) if self.ber_sink: self.sink = dab.blocks.measure_ber_b() else: self.sink = gr.vector_sink_b() self.trig_sink = gr.null_sink(gr.sizeof_char) # self.noise_start = gr.noise_source_c(gr.GR_GAUSSIAN, math.sqrt(2), random.randint(0,10000)) # self.noise_start_head = gr.head(gr.sizeof_gr_complex, NOISE_SAMPLES_AT_START) # self.noise_end = gr.noise_source_c(gr.GR_GAUSSIAN, math.sqrt(2), random.randint(0,10000)) # self.noise_end_head = gr.head(gr.sizeof_gr_complex, NOISE_SAMPLES_AT_END) # blocks self.s2v = gr.stream_to_vector(gr.sizeof_char, self.vlen) self.v2s = gr.vector_to_stream(gr.sizeof_char, self.vlen) if self.ber_sink: self.ber_skipbytes0 = gr.skiphead(gr.sizeof_char, self.ber_skipbytes) self.ber_skipbytes1 = gr.skiphead(gr.sizeof_char, self.ber_skipbytes+self.dp.bytes_per_frame) # more blocks (they have state, so better reinitialise them) self.mod = dab.ofdm_mod(self.dp, debug = False) self.rescale = gr.multiply_const_cc(1) self.amp = gr.multiply_const_cc(1) self.channel = blks2.channel_model(noise_voltage=0, noise_seed=random.randint(0,10000)) # self.cat = dab.concatenate_signals(gr.sizeof_gr_complex) self.demod = dab.ofdm_demod(self.dp, self.rp, debug = False, verbose = True) # connect it all if self.ber_sink: self.connect(self.source, self.s2v, (self.mod,0), self.rescale, self.amp, self.channel, (self.demod,0), self.v2s, self.ber_skipbytes0, self.sink) self.connect(self.source, self.ber_skipbytes1, (self.sink,1)) else: self.connect(self.source, self.s2v, (self.mod,0), self.rescale, self.amp, self.channel, (self.demod,0), self.v2s, self.sink) self.connect(self.trig, (self.mod,1)) self.connect((self.demod, 1), self.trig_sink) # SNR calculation and prober self.probe_signal = gr.probe_avg_mag_sqrd_c(0,0.00001) self.probe_total = gr.probe_avg_mag_sqrd_c(0,0.00001) self.connect(self.amp, self.probe_signal) self.connect(self.channel, self.probe_total)
def __init__(self, dab_params, sampling_rate, num_subch, ensemble_lable,
service_label, service_comp_label, service_language,
protection_mode, data_rate_n):
gr.hier_block2.__init__(
self,
"transmitter_c",
gr.io_signature(0, 0, gr.sizeof_char), # Input signature
gr.io_signature(1, 1, gr.sizeof_gr_complex)) # Output signature
self.dp = dab_params
self.sampling_rate = sampling_rate
# FIC
self.fic_source = dab.fib_source_b_make(self.dp.mode, num_subch,
ensemble_lable, service_label,
service_comp_label,
service_language,
protection_mode, data_rate_n)
self.fic_encode = dab.fic_encode(self.dp)
# MSC
self.msc_encoder()
for i in range(0, num_subch):
self.msc_encoder[i] = dab.msc_encode(self.dp, data_rate_n[i],
protection_mode[i])
# MUX
self.subch_size = 6 * data_rate_n
self.mux = dab.dab_transmission_frame_mux_bb_make(
self.dp.mode, num_subch, self.subch_size)
# OFDM Modulator
self.s2v = blocks.stream_to_vector(gr.sizeof_char, 384)
self.mod = dab.ofdm_mod(self.dp)
# connect everything
self.connect(self.fic_source, self.fic_encode, (self.mux, 0))
for i in range(0, num_subch):
self.connect((self, i), self.msc_encoder[i], (self.mux, i + 1))
self.connect((self.mux, 0), self.s2v, (self.mod, 0))
self.connect((self.mux, 1), (self.mod, 1))
self.connect(self.mod, self)
def __init__(self):
gr.top_block.__init__(self)
parser = OptionParser(option_class=eng_option,
usage="%prog: [options] input-filename")
parser.add_option("-T",
"--tx-subdev-spec",
type="subdev",
default=(0, 0),
help="select USRP Tx side A or B [default=A]")
parser.add_option("-f",
"--freq",
type="eng_float",
default=227.36e6,
help="set frequency to FREQ [default=%default]")
parser.add_option("-g",
"--tx-gain",
type="eng_float",
default=None,
help="set transmit gain in dB (default is midpoint)")
parser.add_option('-v',
'--verbose',
action="store_true",
default=False,
help="verbose output")
parser.add_option('-a',
'--antenna',
type="string",
default="TX/RX",
help="select antenna")
(options, args) = parser.parse_args()
if len(args) != 1:
parser.print_help()
sys.exit(1)
else:
self.filename = args[0]
# if gr.enable_realtime_scheduling() != gr.RT_OK:
# print "-> failed to enable realtime scheduling"
interp = 64
self.sample_rate = 128e6 / interp
self.dab_params = dab.parameters.dab_parameters(
mode=1, sample_rate=2000000, verbose=options.verbose)
self.src = blocks.file_source(gr.sizeof_char, self.filename)
self.trigsrc = blocks.vector_source_b(
[1] + [0] * (self.dab_params.symbols_per_frame - 1), True)
self.s2v = blocks.stream_to_vector(gr.sizeof_char, 384)
self.mod = dab.ofdm_mod(self.dab_params, verbose=options.verbose)
#self.sink = usrp.sink_c(interp_rate = interp)
self.sink = uhd.usrp_sink("", uhd.io_type.COMPLEX_FLOAT32, 1)
self.sink.set_samp_rate(self.sample_rate)
#self.sink.set_mux(usrp.determine_tx_mux_value(self.sink, options.tx_subdev_spec))
#self.subdev = usrp.selected_subdev(self.sink, options.tx_subdev_spec)
self.sink.set_antenna(options.antenna)
print "--> using sample rate: " + str(self.sample_rate)
self.connect(self.src, self.s2v, self.mod, self.sink)
self.connect(self.trigsrc, (self.mod, 1))
# tune frequency
self.sink.set_center_freq(options.freq)
# set gain
if options.tx_gain is None:
# if no gain was specified, use the mid-point in dB
g = self.sink.get_gain_range()
options.tx_gain = float(g.start() + g.stop()) / 2
self.sink.set_gain(options.tx_gain)
def __init__(self,
frequency,
num_subch,
ensemble_label,
service_label,
language,
protections,
data_rates_n,
src_paths,
selected_audio,
use_usrp,
sink_path="dab_iq_generated.dat"):
gr.top_block.__init__(self)
self.dab_mode = 1
self.frequency = frequency
interp = 64
self.sample_rate = 128e6 / interp
self.dp = dab.parameters.dab_parameters(self.dab_mode, 2000000, False)
self.num_subch = num_subch
self.ensemble_label = ensemble_label
self.service_label = service_label
self.language = language
self.protections = protections
self.data_rates_n = data_rates_n
self.subch_sizes = np.multiply(self.data_rates_n, 6)
self.src_paths = src_paths
self.use_usrp = use_usrp
self.sink_path = sink_path
self.selected_audio = selected_audio
self.volume = 80
########################
# FIC
########################
# source
self.fic_src = dab.fib_source_b_make(self.dab_mode, self.num_subch,
self.ensemble_label,
self.service_label, "",
self.language, self.protections,
self.data_rates_n)
# encoder
self.fic_enc = dab.fic_encode(self.dp)
########################
# MSC
########################
self.msc_sources = [None] * self.num_subch
self.f2s_left_converters = [None] * self.num_subch
self.f2s_right_converters = [None] * self.num_subch
self.mp4_encoders = [None] * self.num_subch
self.rs_encoders = [None] * self.num_subch
self.msc_encoders = [None] * self.num_subch
for i in range(0, self.num_subch):
# source
self.msc_sources[i] = blocks.wavfile_source_make(
self.src_paths[i], True)
# float to short
self.f2s_left_converters[i] = blocks.float_to_short_make(1, 32767)
self.f2s_right_converters[i] = blocks.float_to_short_make(1, 32767)
# mp4 encoder and Reed-Solomon encoder
self.mp4_encoders[i] = dab.mp4_encode_sb_make(
self.data_rates_n[i], 2, 32000, 1)
self.rs_encoders[i] = dab.reed_solomon_encode_bb_make(
self.data_rates_n[i])
# encoder
self.msc_encoders[i] = dab.msc_encode(self.dp,
self.data_rates_n[i],
self.protections[i])
########################
# MUX
########################
self.mux = dab.dab_transmission_frame_mux_bb_make(
self.dab_mode, self.num_subch, self.subch_sizes)
#self.mux = dab.dab_transmission_frame_mux_bb_make(1, 1, [84, 84])
self.trigsrc = blocks.vector_source_b([1] + [0] * 74, True)
########################
# Modulator
########################
self.s2v_mod = blocks.stream_to_vector(gr.sizeof_char, 384)
self.mod = dab.ofdm_mod(self.dp)
########################
# Sink
########################
if self.use_usrp:
self.sink = uhd.usrp_sink("", uhd.io_type.COMPLEX_FLOAT32, 1)
self.sink.set_samp_rate(self.sample_rate)
self.sink.set_antenna("TX/RX")
self.sink.set_center_freq(self.frequency)
else:
self.sink = blocks.file_sink_make(gr.sizeof_gr_complex,
self.sink_path)
# audio sink
self.audio = audio.sink_make(32000)
self.gain_left = blocks.multiply_const_ff_make(1, 1)
self.gain_right = blocks.multiply_const_ff_make(1, 1)
########################
# Connections
########################
self.connect(self.fic_src, self.fic_enc, (self.mux, 0))
for i in range(0, self.num_subch):
self.connect((self.msc_sources[i], 0), self.f2s_left_converters[i],
(self.mp4_encoders[i], 0), self.rs_encoders[i],
self.msc_encoders[i], (self.mux, i + 1))
self.connect((self.msc_sources[i], 1),
self.f2s_right_converters[i],
(self.mp4_encoders[i], 1))
self.connect((self.mux, 0), self.s2v_mod, (self.mod, 0))
self.connect(self.trigsrc, (self.mod, 1))
self.connect(self.mod, self.sink)
self.connect((self.msc_sources[self.selected_audio - 1], 0),
self.gain_left, (self.audio, 0))
self.connect((self.msc_sources[self.selected_audio - 1], 1),
self.gain_right, (self.audio, 1))
def __init__(self,
dab_mode,
frequency,
num_subch,
ensemble_label,
service_label,
language,
country_ID,
protections,
data_rates_n,
stereo_flags,
audio_sampling_rates,
src_paths,
selected_audio,
use_usrp,
dabplus_types,
sink_path="dab_iq_generated.dat"):
gr.top_block.__init__(self)
self.dab_mode = dab_mode
self.frequency = frequency
interp = 64
self.sample_rate = 128e6 / interp
self.dp = dab.parameters.dab_parameters(self.dab_mode, 2000000, False)
self.num_subch = num_subch
self.ensemble_label = ensemble_label
self.service_label = service_label
self.language = language
self.protections = protections
self.data_rates_n = data_rates_n
self.src_paths = src_paths
self.use_usrp = use_usrp
self.dabplus_types = dabplus_types
self.sink_path = sink_path
self.selected_audio = selected_audio
self.volume = 80
sizes = {0: 12, 1: 8, 2: 6, 3: 4}
self.subch_sizes = [None] * len(self.data_rates_n)
for i in range(0, len(self.data_rates_n)):
self.subch_sizes[i] = self.data_rates_n[i] * sizes[protections[i]]
########################
# FIC
########################
# source
self.fic_src = dab.fib_source_b_make(
self.dab_mode, country_ID, self.num_subch, self.ensemble_label,
self.service_label, "", self.language, self.protections,
self.data_rates_n, self.dabplus_types)
# encoder
self.fic_enc = dab.fic_encode(self.dp)
########################
# MSC
########################
self.recorder = audio.source_make(32000)
self.msc_sources = [None] * self.num_subch
self.f2s_left_converters = [None] * self.num_subch
self.f2s_right_converters = [None] * self.num_subch
self.mp4_encoders = [None] * self.num_subch
self.mp2_encoders = [None] * self.num_subch
self.rs_encoders = [None] * self.num_subch
self.msc_encoders = [None] * self.num_subch
for i in range(0, self.num_subch):
if not self.src_paths[i] is "mic":
# source
self.msc_sources[i] = blocks.wavfile_source_make(
self.src_paths[i], True)
# float to short
self.f2s_left_converters[i] = blocks.float_to_short_make(1, 32767)
self.f2s_right_converters[i] = blocks.float_to_short_make(1, 32767)
if self.dabplus_types[i] is 1:
# mp4 encoder and Reed-Solomon encoder
self.mp4_encoders[i] = dab.mp4_encode_sb_make(
self.data_rates_n[i], 2, audio_sampling_rates[i], 1)
self.rs_encoders[i] = dab.reed_solomon_encode_bb_make(
self.data_rates_n[i])
else:
# mp2 encoder
self.mp2_encoders[i] = dab.mp2_encode_sb_make(
self.data_rates_n[i], 2, audio_sampling_rates[i])
# encoder
self.msc_encoders[i] = dab.msc_encode(self.dp,
self.data_rates_n[i],
self.protections[i])
########################
# MUX
########################
self.mux = dab.dab_transmission_frame_mux_bb_make(
self.dab_mode, self.num_subch, self.subch_sizes)
self.trigsrc = blocks.vector_source_b(
[1] + [0] * (self.dp.symbols_per_frame - 2), True)
########################
# Modulator
########################
self.s2v_mod = blocks.stream_to_vector(gr.sizeof_char,
self.dp.num_carriers / 4)
self.mod = dab.ofdm_mod(self.dp)
########################
# Sink
########################
if self.use_usrp:
self.sink = uhd.usrp_sink("", uhd.io_type.COMPLEX_FLOAT32, 1)
self.sink.set_samp_rate(self.sample_rate)
self.sink.set_antenna("TX/RX")
self.sink.set_center_freq(self.frequency)
else:
self.sink = blocks.file_sink_make(gr.sizeof_gr_complex,
self.sink_path)
# audio sink
self.audio = audio.sink_make(32000)
self.gain_left = blocks.multiply_const_ff_make(1, 1)
self.gain_right = blocks.multiply_const_ff_make(1, 1)
self.s2f_left = blocks.short_to_float_make(1, 32767)
self.s2f_right = blocks.short_to_float_make(1, 32767)
########################
# Connections
########################
self.connect(self.fic_src, self.fic_enc, (self.mux, 0))
for i in range(0, self.num_subch):
if self.dabplus_types[i] is 1:
if self.src_paths[i] is "mic":
self.connect(
(self.recorder, 0), self.f2s_left_converters[i],
(self.mp4_encoders[i], 0), self.rs_encoders[i],
self.msc_encoders[i], (self.mux, i + 1))
if stereo_flags[i] == 0:
self.connect((self.recorder, 1),
self.f2s_right_converters[i],
(self.mp4_encoders[i], 1))
else:
self.connect(self.f2s_left_converters[i],
(self.mp4_encoders[i], 1))
else:
self.connect(
(self.msc_sources[i], 0), self.f2s_left_converters[i],
(self.mp4_encoders[i], 0), self.rs_encoders[i],
self.msc_encoders[i], (self.mux, i + 1))
if stereo_flags[i] == 0:
self.connect((self.msc_sources[i], 1),
self.f2s_right_converters[i],
(self.mp4_encoders[i], 1))
else:
self.connect(self.f2s_left_converters[i],
(self.mp4_encoders[i], 1))
else:
self.connect((self.msc_sources[i], 0),
self.f2s_left_converters[i],
(self.mp2_encoders[i], 0), self.msc_encoders[i],
(self.mux, i + 1))
if stereo_flags[i] == 0:
self.connect((self.msc_sources[i], 1),
self.f2s_right_converters[i],
(self.mp2_encoders[i], 1))
else:
self.connect(self.f2s_left_converters[i],
(self.mp2_encoders[i], 1))
self.connect((self.mux, 0), self.s2v_mod, (self.mod, 0))
self.connect(self.trigsrc, (self.mod, 1))
if use_usrp:
self.connect(self.mod, self.sink)
else:
self.connect(self.mod,
blocks.throttle_make(gr.sizeof_gr_complex, 2e6),
self.sink)
