diff options
| author | Douglas Anderson <danderson@ntia.doc.gov> | 2017-02-12 15:52:19 -0800 |
|---|---|---|
| committer | Johnathan Corgan <johnathan@corganlabs.com> | 2017-02-26 18:21:22 -0800 |
| commit | 9e625c4821f4c63421b3d3747c0c4f358fef6c5f (patch) | |
| tree | 41dedbe053417be7314cdce15d64fbbb89db4d8d /gr-trellis/examples/python | |
| parent | e5aabcc6a4a9335f3ef8abf5f89104b626e9364d (diff) | |
python3: update non-GRC components to use python2 or python3
Diffstat (limited to 'gr-trellis/examples/python')
| -rw-r--r--[-rwxr-xr-x] | gr-trellis/examples/python/test_tcm.py | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/gr-trellis/examples/python/test_tcm.py b/gr-trellis/examples/python/test_tcm.py index dfc565616e..e2eb87fcd7 100755..100644 --- a/gr-trellis/examples/python/test_tcm.py +++ b/gr-trellis/examples/python/test_tcm.py @@ -1,5 +1,8 @@ #!/usr/bin/env python +from __future__ import print_function +from __future__ import division +from __future__ import unicode_literals from gnuradio import gr from gnuradio import trellis, digital, blocks from gnuradio import eng_notation @@ -33,7 +36,7 @@ def run_test (f,Kb,bitspersymbol,K,dimensionality,constellation,N0,seed): # CHANNEL add = blocks.add_ff() - noise = analog.noise_source_f(analog.GR_GAUSSIAN,math.sqrt(N0/2),long(seed)) + noise = analog.noise_source_f(analog.GR_GAUSSIAN,math.sqrt(N0 / 2),int(seed)) # RX va = trellis.viterbi_combined_fs(f,K,0,0,dimensionality,constellation,digital.TRELLIS_EUCLIDEAN) # Put -1 if the Initial/Final states are not set. @@ -56,7 +59,7 @@ def run_test (f,Kb,bitspersymbol,K,dimensionality,constellation,N0,seed): #print "final state = " , enc.ST() if len(dst.data()) != len(packet): - print "Error: not enough data:", len(dst.data()), len(packet) + print("Error: not enough data:", len(dst.data()), len(packet)) ntotal=len(packet) nwrong = sum(abs(packet-numpy.array(dst.data()))); return (ntotal,nwrong,abs(packet-numpy.array(dst.data()))) @@ -73,7 +76,7 @@ def main(): (options, args) = parser.parse_args () if len(args) != 0: parser.print_help() - raise SystemExit, 1 + raise SystemExit(1) fname=options.fsm_file esn0_db=float(options.esn0) @@ -84,20 +87,20 @@ def main(): # alternatively you can specify the fsm from its generator matrix #f=trellis.fsm(1,2,[5,7]) Kb=1024*16 # packet size in bits (make it multiple of 16 so it can be packed in a short) - bitspersymbol = int(round(math.log(f.I())/math.log(2))) # bits per FSM input symbol - K=Kb/bitspersymbol # packet size in trellis steps + bitspersymbol = int(round(math.log(f.I()) / math.log(2))) # bits per FSM input symbol + K=Kb / bitspersymbol # packet size in trellis steps modulation = fsm_utils.psk4 # see fsm_utlis.py for available predefined modulations dimensionality = modulation[0] constellation = modulation[1] - if len(constellation)/dimensionality != f.O(): + if len(constellation) / dimensionality != f.O(): sys.stderr.write ('Incompatible FSM output cardinality and modulation size.\n') sys.exit (1) # calculate average symbol energy Es = 0 for i in range(len(constellation)): Es = Es + constellation[i]**2 - Es = Es / (len(constellation)/dimensionality) - N0=Es/pow(10.0,esn0_db/10.0); # calculate noise variance + Es = Es / (old_div(len(constellation,dimensionality))) + N0=Es / pow(10.0,old_div(esn0_db,10.0)); # calculate noise variance tot_b=0 # total number of transmitted bits terr_b=0 # total number of bits in error @@ -108,14 +111,14 @@ def main(): terr_b=terr_b+e terr_p=terr_p+(e!=0) if ((i+1)%100==0) : # display progress - print i+1,terr_p, '%.2e' % ((1.0*terr_p)/(i+1)),tot_b,terr_b, '%.2e' % ((1.0*terr_b)/tot_b) + print(i+1,terr_p, '%.2e' % ((1.0*terr_p) / (i+1)),tot_b,terr_b, '%.2e' % ((1.0*terr_b) / tot_b)) if e!=0: - print "rep=",i, e + print("rep=",i, e) for k in range(Kb): if pattern[k]!=0: - print k + print(k) # estimate of the bit error rate - print rep,terr_p, '%.2e' % ((1.0*terr_p)/(i+1)),tot_b,terr_b, '%.2e' % ((1.0*terr_b)/tot_b) + print(rep,terr_p, '%.2e' % ((1.0*terr_p) / (i+1)),tot_b,terr_b, '%.2e' % ((1.0*terr_b) / tot_b)) |