diff options
| author | anastas <anastas@221aa14e-8319-0410-a670-987f0aec2ac5> | 2006-08-16 20:07:36 +0000 |
|---|---|---|
| committer | anastas <anastas@221aa14e-8319-0410-a670-987f0aec2ac5> | 2006-08-16 20:07:36 +0000 |
| commit | d5c192f9e3cde58589845b7b51057afc45d3bc79 (patch) | |
| tree | 04dc746388bb19f66bae93d110e4f2a5ca14c64b /gnuradio-examples/python/channel-coding/test_sccc_hard.py | |
| parent | 1f0a124c68a40b2eee063267d4f7aeba4ed87619 (diff) | |
Several enhancements to gr-trellis and gnuradio-examples/python/channel-coding:
-Added fsm constructor for generating FSM directly from the
generator matrix of binary convolutional codes.
-Added functionality to fsm class to compute the best way to
go from any state to any other state (useful for termination)
-Added soft-in-soft-out (SISO) block for turbo processing
-Added turbo decoding examples
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@3322 221aa14e-8319-0410-a670-987f0aec2ac5
Diffstat (limited to 'gnuradio-examples/python/channel-coding/test_sccc_hard.py')
| -rwxr-xr-x | gnuradio-examples/python/channel-coding/test_sccc_hard.py | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/gnuradio-examples/python/channel-coding/test_sccc_hard.py b/gnuradio-examples/python/channel-coding/test_sccc_hard.py index a869e91e10..d634282fe7 100755 --- a/gnuradio-examples/python/channel-coding/test_sccc_hard.py +++ b/gnuradio-examples/python/channel-coding/test_sccc_hard.py @@ -18,7 +18,7 @@ def run_test (fo,fi,interleaver,Kb,bitspersymbol,K,dimensionality,constellation, 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(),gr.sizeof_short) + 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) @@ -29,7 +29,7 @@ def run_test (fo,fi,interleaver,Kb,bitspersymbol,K,dimensionality,constellation, # 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(),gr.sizeof_short) + 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 @@ -85,14 +85,16 @@ def main(args): tot_s=0 # total number of transmitted shorts terr_s=0 # total number of shorts in error + terr_p=0 # total number of packets in error for i in range(rep): (s,e)=run_test(fo,fi,interleaver,Kb,bitspersymbol,K,dimensionality,constellation,N0,-long(666+i)) # run experiment with different seed to get different noise realizations tot_s=tot_s+s terr_s=terr_s+e - if (i%100==0) & (i>0): # display progress - print i,s,e,tot_s,terr_s, '%e' % ((1.0*terr_s)/tot_s) + terr_p=terr_p+(terr_s!=0) + if ((i+1)%100==0) : # display progress + print i+1,terr_p, '%.2e' % ((1.0*terr_p)/(i+1)),tot_s,terr_s, '%.2e' % ((1.0*terr_s)/tot_s) # estimate of the (short or bit) error rate - print tot_s,terr_s, '%e' % ((1.0*terr_s)/tot_s) + print rep,terr_p, '%.2e' % ((1.0*terr_p)/(i+1)),tot_s,terr_s, '%.2e' % ((1.0*terr_s)/tot_s) if __name__ == '__main__': |