def test_mod_cpm():
tb = gr.top_block()
precode = mlse.xor_encode_bb()
nrz = gr.map_bb([1, -1])
mod = gr.gmskmod_bc(1, 0.3, 4)
#src = gr.vector_source_b([0,0,0,0,1,1,1,1,0,0])
#src = gr.vector_source_b([1,1,0,0,1,0,0,1,1,1,0,0,0,0])
src = gr.vector_source_b((1, ) * 1000)
sink = gr.vector_sink_c()
derot = mlse.derotate_cc(1, 4)
tb.connect(src, precode, nrz, mod, derot, sink)
precode_probe = gr.vector_sink_b()
tb.connect(nrz, precode_probe)
tb.run()
d = sink.data()
from cmath import phase, pi, rect
real = lambda x: x.real
import operator
d_r = d #list(decimate(d,5,2))
d2 = [int(round((phase(i) / pi) * 100)) for i in d]
derotate = [(-1j)**(i + 1) for i in range(len(d_r))]
d3 = map(operator.mul, d_r, derotate)
# print "\n".join(map(str,map(real,d3)))
print precode_probe.data()
# print "\n".join(map(str,map(phase,d)))
print "\n".join([str(phase(i) / pi) for i in d])
print len(d)
print derotate
def test_mod_cpm():
tb = gr.top_block()
precode = mlse.xor_encode_bb()
nrz = gr.map_bb([1,-1])
mod = gr.gmskmod_bc(1,0.3,4)
#src = gr.vector_source_b([0,0,0,0,1,1,1,1,0,0])
#src = gr.vector_source_b([1,1,0,0,1,0,0,1,1,1,0,0,0,0])
src = gr.vector_source_b((1,)*1000)
sink = gr.vector_sink_c()
derot = mlse.derotate_cc(1,4)
tb.connect(src, precode, nrz, mod, derot, sink)
precode_probe = gr.vector_sink_b()
tb.connect(nrz, precode_probe)
tb.run()
d = sink.data()
from cmath import phase, pi, rect
real = lambda x: x.real
import operator
d_r = d#list(decimate(d,5,2))
d2 = [ int(round((phase(i)/pi)*100)) for i in d ]
derotate = [ (-1j)**(i+1) for i in range(len(d_r))]
d3 = map(operator.mul, d_r, derotate)
# print "\n".join(map(str,map(real,d3)))
print precode_probe.data()
# print "\n".join(map(str,map(phase,d)))
print "\n".join([str(phase(i)/pi) for i in d])
print len(d)
print derotate
def test_viterbi():
tb=gr.top_block()
channel = [0,1,0]
prellen = len(channel) - 1
data = [random.randint(0,1) for i in xrange(20+prellen)]
data.extend([0,0,0]) # tailbits
data.extend([0]*6) # to flush modulator
# modulate
datasrc = gr.vector_source_b(data)
diffcode = mlse.xor_encode_bb();
nrz = gr.map_bb([1,-1])
mod = gr.gmskmod_bc(1, 0.3, 12)
derot = mlse.derotate_cc();
modsink = gr.vector_sink_c();
tb.connect(datasrc, diffcode, nrz, mod, derot, modsink)
tb.run()
samples = modsink.data()[6:]
printvect_c(samples)
preload = data[:prellen]
rest = data[prellen:][:20]
tb=gr.top_block()
conf=mlse.make_packet_config_gsm()
vit = mlse.viterbi_vcb(20,len(channel),3,[1,-1])#conf.get_constellation())
chansrc = gr.vector_source_c(channel,vlen=len(channel))
preloadsrc = gr.vector_source_b(preload,vlen=len(preload))
samplesrc = gr.vector_source_c(samples,vlen=len(samples))
sink = gr.vector_sink_b(20)
tb.connect(chansrc, (vit,0))
tb.connect(samplesrc, (vit,1))
tb.connect(preloadsrc, (vit,2))
tb.connect(vit, sink)
tb.run()
print_bitvect(preload)
print_bitvect(rest)
print_bitvect(sink.data())
def test_viterbi():
tb = gr.top_block()
channel = [0, 1, 0]
prellen = len(channel) - 1
data = [random.randint(0, 1) for i in xrange(20 + prellen)]
data.extend([0, 0, 0]) # tailbits
data.extend([0] * 6) # to flush modulator
# modulate
datasrc = gr.vector_source_b(data)
diffcode = mlse.xor_encode_bb()
nrz = gr.map_bb([1, -1])
mod = gr.gmskmod_bc(1, 0.3, 12)
derot = mlse.derotate_cc()
modsink = gr.vector_sink_c()
tb.connect(datasrc, diffcode, nrz, mod, derot, modsink)
tb.run()
samples = modsink.data()[6:]
printvect_c(samples)
preload = data[:prellen]
rest = data[prellen:][:20]
tb = gr.top_block()
conf = mlse.make_packet_config_gsm()
vit = mlse.viterbi_vcb(20, len(channel), 3,
[1, -1]) #conf.get_constellation())
chansrc = gr.vector_source_c(channel, vlen=len(channel))
preloadsrc = gr.vector_source_b(preload, vlen=len(preload))
samplesrc = gr.vector_source_c(samples, vlen=len(samples))
sink = gr.vector_sink_b(20)
tb.connect(chansrc, (vit, 0))
tb.connect(samplesrc, (vit, 1))
tb.connect(preloadsrc, (vit, 2))
tb.connect(vit, sink)
tb.run()
print_bitvect(preload)
print_bitvect(rest)
print_bitvect(sink.data())