1 files changed, 0 insertions, 102 deletions
diff --git a/gr-trellis/src/examples/python/test_viterbi_equalization1.py b/gr-trellis/src/examples/python/test_viterbi_equalization1.py
deleted file mode 100755
index 90eb4790e..000000000
--- a/gr-trellis/src/examples/python/test_viterbi_equalization1.py
+++ /dev/null
@@ -1,102 +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 run_test (f,Kb,bitspersymbol,K,channel,modulation,dimensionality,tot_constellation,N0,seed):
-    tb = gr.top_block ()
-    L = len(channel)
-
-    # TX
-    # this for loop is TOO slow in python!!!
-    packet = [0]*(K+2*L)
-    random.seed(seed)
-    for i in range(len(packet)):
-        packet[i] = random.randint(0, 2**bitspersymbol - 1) # random symbols
-    for i in range(L): # first/last L symbols set to 0
-        packet[i] = 0
-        packet[len(packet)-i-1] = 0
-    src = gr.vector_source_s(packet,False)
-    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
-    skip = gr.skiphead(gr.sizeof_float, L) # skip the first L samples since you know they are coming from the L zero symbols
-    #metrics = trellis.metrics_f(f.O(),dimensionality,tot_constellation,digital.TRELLIS_EUCLIDEAN) # data preprocessing to generate metrics for Viterbi
-    #va = trellis.viterbi_s(f,K+L,-1,0) # Put -1 if the Initial/Final states are not set.
-    va = trellis.viterbi_combined_fs(f,K+L,0,0,dimensionality,tot_constellation,digital.TRELLIS_EUCLIDEAN) # using viterbi_combined_fs instead of metrics_f/viterbi_s allows larger packet lengths because metrics_f is complaining for not being able to allocate large buffers. This is due to the large f.O() in this application...
-    dst = gr.vector_sink_s()
-
-    tb.connect (src,mod)
-    tb.connect (mod,isi,(add,0))
-    tb.connect (noise,(add,1))
-    #tb.connect (add,metrics)
-    #tb.connect (metrics,va,dst)
-    tb.connect (add,skip,va,dst)
-
-    tb.run()
-
-    data = dst.data()
-    ntotal = len(data) - L
-    nright=0
-    for i in range(ntotal):
-        if packet[i+L]==data[i]:
-            nright=nright+1
-        #else:
-            #print "Error in ", i
-
-    return (ntotal,ntotal-nright)
-
-
-def main(args):
-    nargs = len (args)
-    if nargs == 2:
-        esn0_db=float(args[0])
-        rep=int(args[1])
-    else:
-        sys.stderr.write ('usage: test_viterbi_equalization1.py Es/No_db  repetitions\n')
-        sys.exit (1)
-
-    # system parameters
-    Kb=128*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
-    f=trellis.fsm(len(modulation[1]),len(channel)) # generate the FSM automatically
-    bitspersymbol = int(round(math.log(f.I())/math.log(2))) # bits per FSM input symbol
-    K=Kb/bitspersymbol # packet size in trellis steps
-
-    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]
-    N0=pow(10.0,-esn0_db/10.0); # noise variance
-    if len(tot_constellation)/dimensionality != f.O():
-        sys.stderr.write ('Incompatible FSM output cardinality and lookup table size.\n')
-        sys.exit (1)
-
-    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(f,Kb,bitspersymbol,K,channel,modulation,dimensionality,tot_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
-        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 symbol) 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:])