1 files changed, 0 insertions, 146 deletions
diff --git a/gr-trellis/src/examples/python/test_turbo_equalization1.py b/gr-trellis/src/examples/python/test_turbo_equalization1.py
deleted file mode 100755
index 17ad43023..000000000
--- a/gr-trellis/src/examples/python/test_turbo_equalization1.py
+++ /dev/null
@@ -1,146 +0,0 @@
-#!/usr/bin/env python
-
-from gnuradio import gr
-from gnuradio import trellis, digital
-from gnuradio import eng_notation
-import math
-import sys
-import random
-import fsm_utils
-
-def make_rx(tb,fo,fi,dimensionality,tot_constellation,K,interleaver,IT,Es,N0,type):
-    metrics_in = trellis.metrics_f(fi.O(),dimensionality,tot_constellation,digital.TRELLIS_EUCLIDEAN) # data preprocessing to generate metrics for innner SISO
-    scale = gr.multiply_const_ff(1.0/N0)
-    gnd = gr.vector_source_f([0],True);
-
-    inter=[]
-    deinter=[]
-    siso_in=[]
-    siso_out=[]
-
-    # generate all blocks
-    for it in range(IT):
-      inter.append( trellis.permutation(interleaver.K(),interleaver.INTER(),fi.I(),gr.sizeof_float) )
-      siso_in.append( trellis.siso_f(fi,K,0,-1,True,False,type) )
-      deinter.append( trellis.permutation(interleaver.K(),interleaver.DEINTER(),fi.I(),gr.sizeof_float) )
-      if it < IT-1:
-        siso_out.append( trellis.siso_f(fo,K,0,-1,False,True,type) )
-      else:
-        siso_out.append( trellis.viterbi_s(fo,K,0,-1) ) # no soft outputs needed
-
-    # connect first stage
-    tb.connect (gnd,inter[0])
-    tb.connect (metrics_in,scale)
-    tb.connect (scale,(siso_in[0],1))
-
-    # connect the rest
-    for it in range(IT):
-      if it < IT-1:
-        tb.connect (scale,(siso_in[it+1],1))
-        tb.connect (siso_in[it],deinter[it],(siso_out[it],1))
-        tb.connect (gnd,(siso_out[it],0))
-        tb.connect (siso_out[it],inter[it+1])
-        tb.connect (inter[it],(siso_in[it],0))
-      else:
-        tb.connect (siso_in[it],deinter[it],siso_out[it])
-        tb.connect (inter[it],(siso_in[it],0))
-
-    return (metrics_in,siso_out[IT-1])
-
-
-def run_test (fo,fi,interleaver,Kb,bitspersymbol,K,channel,modulation,dimensionality,tot_constellation,Es,N0,IT,seed):
-    tb = gr.top_block ()
-    L = len(channel)
-
-    # TX
-    # this for loop is TOO slow in python!!!
-    packet = [0]*(K)
-    random.seed(seed)
-    for i in range(len(packet)):
-        packet[i] = random.randint(0, 2**bitspersymbol - 1) # random symbols
-    src = gr.vector_source_s(packet,False)
-    enc_out = trellis.encoder_ss(fo,0) # initial state = 0
-    inter = trellis.permutation(interleaver.K(),interleaver.INTER(),1,gr.sizeof_short)
-    mod = gr.chunks_to_symbols_sf(modulation[1],modulation[0])
-
-    # CHANNEL
-    isi = gr.fir_filter_fff(1,channel)
-    add = gr.add_ff()
-    noise = gr.noise_source_f(gr.GR_GAUSSIAN,math.sqrt(N0/2),seed)
-
-    # RX
-    (head,tail) = make_rx(tb,fo,fi,dimensionality,tot_constellation,K,interleaver,IT,Es,N0,trellis.TRELLIS_MIN_SUM)
-    dst = gr.vector_sink_s();
-
-    tb.connect (src,enc_out,inter,mod)
-    tb.connect (mod,isi,(add,0))
-    tb.connect (noise,(add,1))
-    tb.connect (add,head)
-    tb.connect (tail,dst)
-
-    tb.run()
-
-    data = dst.data()
-    ntotal = len(data)
-    nright=0
-    for i in range(ntotal):
-        if packet[i]==data[i]:
-            nright=nright+1
-        #else:
-            #print "Error in ", i
-
-    return (ntotal,ntotal-nright)
-
-
-
-
-def main(args):
-    nargs = len (args)
-    if nargs == 3:
-        fname_out=args[0]
-        esn0_db=float(args[1])
-        rep=int(args[2])
-    else:
-        sys.stderr.write ('usage: test_turbo_equalization.py fsm_name_out Es/No_db  repetitions\n')
-        sys.exit (1)
-
-    # system parameters
-    Kb=64*16  # packet size in bits (multiple of 16)
-    modulation = fsm_utils.pam4 # see fsm_utlis.py for available predefined modulations
-    channel = fsm_utils.c_channel # see fsm_utlis.py for available predefined test channels
-    fo=trellis.fsm(fname_out) # get the outer FSM specification from a file
-    fi=trellis.fsm(len(modulation[1]),len(channel)) # generate the FSM automatically
-    if fo.O() != fi.I():
-        sys.stderr.write ('Incompatible cardinality between outer and inner FSM.\n')
-        sys.exit (1)
-    bitspersymbol = int(round(math.log(fo.I())/math.log(2))) # bits per FSM input symbol
-    K=Kb/bitspersymbol # packet size in trellis steps
-    interleaver=trellis.interleaver(K,666) # construct a random interleaver
-    tot_channel = fsm_utils.make_isi_lookup(modulation,channel,True) # generate the lookup table (normalize energy to 1)
-    dimensionality = tot_channel[0]
-    tot_constellation = tot_channel[1]
-    if len(tot_constellation)/dimensionality != fi.O():
-        sys.stderr.write ('Incompatible FSM output cardinality and lookup table size.\n')
-        sys.exit (1)
-    N0=pow(10.0,-esn0_db/10.0); # noise variance
-    IT = 3 # number of turbo iterations
-
-    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,channel,modulation,dimensionality,tot_constellation,1,N0,IT,-long(666+i)) # run experiment with different seed to get different noise realizations
-        tot_s=tot_s+s
-        terr_s=terr_s+e
-        terr_p=terr_p+(terr_s!=0)
-        if ((i+1)%10==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 rep,terr_p, '%.2e' % ((1.0*terr_p)/(i+1)),tot_s,terr_s, '%.2e' % ((1.0*terr_s)/tot_s)
-
-
-
-if __name__ == '__main__':
-    main (sys.argv[1:])
-