# should only happen for audio channel
print "I didn't get any samples; is your microphone or speaker OFF?"
sys.exit(1)
#################################
# process the received samples
# make receiver
r = Receiver(fc, opt.samplerate, opt.spb)
demod_samples = r.demodulate(samples_rx)
one, zero, thresh = r.detect_threshold(demod_samples)
barker_start = r.detect_preamble(demod_samples, thresh, one)
rcdbits = r.demap_and_check(demod_samples, barker_start)
# push into sink
sink = Sink()
rcd_payload = sink.process(rcdbits)
if len(rcd_payload) > 0:
hd, err = common_srcsink.hamming(rcd_payload, src_payload)
print 'Hamming distance for payload at frequency', fc,'Hz:', hd, 'BER:', err
else:
print 'Could not recover transmission.'
if opt.graph:
len_mod = len(mod_samples) - opt.spb*opt.silence
len_demod = len_mod - opt.spb*(len(src_payload) - len(rcd_payload))
plot_graphs(mod_samples, samples_rx[barker_start:], demod_samples[barker_start:barker_start + len_demod], opt.spb, src.srctype, opt.silence)
# should only happen for audio channel
print "I didn't get any samples; is your microphone or speaker OFF?"
sys.exit(1)
#################################
# process the received samples
# make receiver
r = Receiver(fc, opt.samplerate, opt.spb)
demod_samples = r.demodulate(samples_rx)
one, zero, thresh = r.detect_threshold(demod_samples)
barker_start = r.detect_preamble(demod_samples, thresh, one)
rcdbits = r.demap_and_check(demod_samples, barker_start)
decoded_bits = r.decode(rcdbits)
# push into sink
sink = Sink()
rcd_payload = sink.process(decoded_bits)
if len(rcd_payload) > 0:
hd, err = common_srcsink.hamming(decoded_bits, databits)
print 'Hamming distance for payload at frequency', fc,'Hz:', hd, 'BER:', err
else:
print 'Could not recover transmission.'
if opt.graph:
len_mod = len(mod_samples) - opt.spb*opt.silence
len_demod = len_mod - opt.spb*(len(src_payload) - len(rcd_payload))
plot_graphs(mod_samples, samples_rx[barker_start:], demod_samples[barker_start:barker_start + len_demod], opt.spb, src.srctype, opt.silence)
# should only happen for audio channel
print "I didn't get any samples; is your microphone or speaker OFF?"
sys.exit(1)
#################################
# process the received samples
# make receiver
r = Receiver(fc, opt.samplerate, opt.spb)
demod_samples = r.demodulate(samples_rx)
one, zero, thresh = r.detect_threshold(demod_samples)
barker_start = r.detect_preamble(demod_samples, thresh, one)
rcdbits = r.demap_and_check(demod_samples, barker_start)
decoded_bits = r.decode(rcdbits)
# push into sink
sink = Sink()
rcd_payload = sink.process(databits)#sink.process(decoded_bits)
if len(rcd_payload) > 0:
hd, err = common_srcsink.hamming(decoded_bits, databits)
print 'Hamming distance for payload at frequency', fc,'Hz:', hd, 'BER:', err
else:
print 'Could not recover transmission.'
if opt.graph:
len_mod = len(mod_samples) - opt.spb*opt.silence
len_demod = len_mod - opt.spb*(len(src_payload) - len(rcd_payload))
plot_graphs(mod_samples, samples_rx[barker_start:], demod_samples[barker_start:barker_start + len_demod], opt.spb, src.srctype, opt.silence)
a, b, c = sou.process()
srcbits = sink.process(c)
# #testArr = np.array([1, 1, 1, 0, 0, 0, 0, 0])
# testArr = sou.text2bits("testfiles/Time.txt")
# statistics_bits, encoded_bits = sou.huffman_encode(testArr)
# print len(encoded_bits)
# print "Encoded bits", encoded_bits
# print
# sink = Sink(1)
# srcbits = sink.huffman_decode(encoded_bits, statistics_bits)
# text = sink.bits2text(srcbits)
# print
# print
# print text
# print
# print
print
print hamming(srcbits, a)
except ZeroDivisionError:
# should only happen for audio channel
print "I didn't get any samples; is your microphone or speaker OFF?"
sys.exit(1)
#################################
# process the received samples
# make receiver
r = Receiver(fc, opt.samplerate, opt.spb)
demod_samples = r.demodulate(samples_rx)
one, zero, thresh = r.detect_threshold(demod_samples)
barker_start = r.detect_preamble(demod_samples, thresh, one)
rcdbits = r.demap_and_check(demod_samples, barker_start)
# push into sink
sink = Sink()
rcd_payload = sink.process(rcdbits)
if len(rcd_payload) > 0:
hd, err = common_srcsink.hamming(rcd_payload, src_payload)
print 'Hamming distance for payload at frequency', fc, 'Hz:', hd, 'BER:', err
else:
print 'Could not recover transmission.'
if opt.graph:
len_mod = len(mod_samples) - opt.spb * opt.silence
len_demod = len_mod - opt.spb * (len(src_payload) - len(rcd_payload))
plot_graphs(mod_samples, samples_rx[barker_start:],
demod_samples[barker_start:barker_start + len_demod],
opt.spb, src.srctype, opt.silence)
print "I didn't get any samples; is your microphone or speaker OFF?"
sys.exit(1)
#################################
# process the received samples
# make receiver
r = Receiver(fc, opt.samplerate, opt.spb)
demod_samples = r.demodulate(samples_rx)
one, zero, thresh = r.detect_threshold(demod_samples)
barker_start = r.detect_preamble(demod_samples, thresh, one)
rcdbits = r.demap_and_check(demod_samples, barker_start)
if opt.cc_len!=0:
rcdbits = r.decode(rcdbits)
# push into sink
sink = Sink(opt.compress)
sink_bits = sink.process(rcdbits)
if len(sink_bits) > 0:
hd, err = common_srcsink.hamming(sink_bits, src_bits)
print 'Hamming distance for payload at frequency', fc,'Hz:', hd, 'BER:', err
else:
print 'Could not recover transmission.'
if opt.graph:
len_mod = len(mod_samples) - opt.spb*opt.silence
len_demod = len_mod - opt.spb*(len(src_payload) - len(rcd_payload))
plot_graphs(mod_samples, samples_rx[barker_start:], demod_samples[barker_start:barker_start + len_demod], opt.spb, src.srctype, opt.silence)
sys.exit(1)
#################################
# process the received samples
# make receiver
r = Receiver(fc, opt.samplerate, opt.spb)
demod_samples = r.demodulate(samples_rx)
one, zero, thresh = r.detect_threshold(demod_samples)
barker_start = r.detect_preamble(demod_samples, thresh, one)
rcdbits = r.demap_and_check(demod_samples, barker_start)
if opt.cc_len != 0:
rcdbits = r.decode(rcdbits)
# push into sink
sink = Sink(opt.compress, opt.encrypt)
sink_bits = sink.process(rcdbits, pubkey)
if len(sink_bits) > 0:
hd, err = common_srcsink.hamming(sink_bits, src_bits)
print 'Hamming distance for payload at frequency', fc, 'Hz:', hd, 'BER:', err
else:
print 'Could not recover transmission.'
if opt.graph:
len_mod = len(mod_samples) - opt.spb * opt.silence
len_demod = len_mod - opt.spb * (len(src_payload) - len(rcd_payload))
plot_graphs(mod_samples, samples_rx[barker_start:],
demod_samples[barker_start:barker_start + len_demod],
opt.spb, src.srctype, opt.silence)
