From 54d6b9281dc233e0b2acf26884073d973b7663de Mon Sep 17 00:00:00 2001
From: jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5>
Date: Tue, 4 Sep 2007 02:43:56 +0000
Subject: Merged r6271:6278 from jcorgan/t182 into trunk. Implements
ticket:182.
Created new top-level component, gr-utils, to hold commonly used utility
scripts (originally in gnuradio-examples). These now install into the
system path, allowing their use from wherever.
Reorganization of gnuradio-examples component:
* Commonly used utility scripts moved from python/usrp into gr-utils.
* Examples now install into $(prefix)/share/gnuradio/examples/...
* Channel coding examples moved into gr-trellis/src/examples, now install
from there, only if gr-atsc itself is going to built and installed.
* ATSC example scripts now install into example hierarchy
* Cruft has been moved into 'limbo' in repository, do not get installed
Trunk passes 'make distcheck'.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@6279 221aa14e-8319-0410-a670-987f0aec2ac5
---
.../python/channel-coding/fsm_utils.py | 213 ---------------------
1 file changed, 213 deletions(-)
delete mode 100755 gnuradio-examples/python/channel-coding/fsm_utils.py
(limited to 'gnuradio-examples/python/channel-coding/fsm_utils.py')
diff --git a/gnuradio-examples/python/channel-coding/fsm_utils.py b/gnuradio-examples/python/channel-coding/fsm_utils.py
deleted file mode 100755
index 1b011246c8..0000000000
--- a/gnuradio-examples/python/channel-coding/fsm_utils.py
+++ /dev/null
@@ -1,213 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright 2004 Free Software Foundation, Inc.
-#
-# This file is part of GNU Radio
-#
-# GNU Radio is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3, or (at your option)
-# any later version.
-#
-# GNU Radio is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNU Radio; see the file COPYING. If not, write to
-# the Free Software Foundation, Inc., 51 Franklin Street,
-# Boston, MA 02110-1301, USA.
-#
-
-
-import re
-import math
-import sys
-import operator
-
-from gnuradio import trellis
-
-
-
-######################################################################
-# Decimal to any base conversion.
-# Convert 'num' to a list of 'l' numbers representing 'num'
-# to base 'base' (most significant symbol first).
-######################################################################
-def dec2base(num,base,l):
- s=range(l)
- n=num
- for i in range(l):
- s[l-i-1]=n%base
- n=int(n/base)
- if n!=0:
- print 'Number ', num, ' requires more than ', l, 'digits.'
- return s
-
-
-######################################################################
-# Conversion from any base to decimal.
-# Convert a list 's' of symbols to a decimal number
-# (most significant symbol first)
-######################################################################
-def base2dec(s,base):
- num=0
- for i in range(len(s)):
- num=num*base+s[i]
- return num
-
-
-######################################################################
-# Generate a new FSM representing the concatenation of two FSMs
-######################################################################
-def fsm_concatenate(f1,f2):
- if f1.O() > f2.I():
- print "Not compatible FSMs\n"
- I=f1.I()
- S=f1.S()*f2.S()
- O=f2.O()
- nsm=list([0]*I*S)
- osm=list([0]*I*S)
- for s1 in range(f1.S()):
- for s2 in range(f2.S()):
- for i in range(f1.I()):
- ns1=f1.NS()[s1*f1.I()+i]
- o1=f1.OS()[s1*f1.I()+i]
- ns2=f2.NS()[s2*f2.I()+o1]
- o2=f2.OS()[s2*f2.I()+o1]
-
- s=s1*f2.S()+s2
- ns=ns1*f2.S()+ns2
- nsm[s*I+i]=ns
- osm[s*I+i]=o2
-
-
- f=trellis.fsm(I,S,O,nsm,osm)
- return f
-
-######################################################################
-# Generate a new FSM representing n stages through the original FSM
-######################################################################
-def fsm_radix(f,n):
- I=f.I()**n
- S=f.S()
- O=f.O()**n
- nsm=list([0]*I*S)
- osm=list([0]*I*S)
- for s in range(f.S()):
- for i in range(I):
- ii=dec2base(i,f.I(),n)
- oo=list([0]*n)
- ns=s
- for k in range(n):
- oo[k]=f.OS()[ns*f.I()+ii[k]]
- ns=f.NS()[ns*f.I()+ii[k]]
-
- nsm[s*I+i]=ns
- osm[s*I+i]=base2dec(oo,f.O())
-
-
- f=trellis.fsm(I,S,O,nsm,osm)
- return f
-
-
-
-
-######################################################################
-# Automatically generate the lookup table that maps the FSM outputs
-# to channel inputs corresponding to a channel 'channel' and a modulation
-# 'mod'. Optional normalization of channel to unit energy.
-# This table is used by the 'metrics' block to translate
-# channel outputs to metrics for use with the Viterbi algorithm.
-# Limitations: currently supports only one-dimensional modulations.
-######################################################################
-def make_isi_lookup(mod,channel,normalize):
- dim=mod[0]
- constellation = mod[1]
-
- if normalize:
- p = 0
- for i in range(len(channel)):
- p = p + channel[i]**2
- for i in range(len(channel)):
- channel[i] = channel[i]/math.sqrt(p)
-
- lookup=range(len(constellation)**len(channel))
- for o in range(len(constellation)**len(channel)):
- ss=dec2base(o,len(constellation),len(channel))
- ll=0
- for i in range(len(channel)):
- ll=ll+constellation[ss[i]]*channel[i]
- lookup[o]=ll
- return (1,lookup)
-
-
-
-
-
-
-######################################################################
-# A list of common modulations.
-# Format: (dimensionality,constellation)
-######################################################################
-pam2 = (1,[-1, 1])
-pam4 = (1,[-3, -1, 3, 1]) # includes Gray mapping
-pam8 = (1,[-7, -5, -3, -1, 1, 3, 5, 7])
-
-psk4=(2,[1, 0, \
- 0, 1, \
- 0, -1,\
- -1, 0]) # includes Gray mapping
-psk8=(2,[math.cos(2*math.pi*0/8), math.sin(2*math.pi*0/8), \
- math.cos(2*math.pi*1/8), math.sin(2*math.pi*1/8), \
- math.cos(2*math.pi*2/8), math.sin(2*math.pi*2/8), \
- math.cos(2*math.pi*3/8), math.sin(2*math.pi*3/8), \
- math.cos(2*math.pi*4/8), math.sin(2*math.pi*4/8), \
- math.cos(2*math.pi*5/8), math.sin(2*math.pi*5/8), \
- math.cos(2*math.pi*6/8), math.sin(2*math.pi*6/8), \
- math.cos(2*math.pi*7/8), math.sin(2*math.pi*7/8)])
-
-orth2 = (2,[1, 0, \
- 0, 1])
-orth4=(4,[1, 0, 0, 0, \
- 0, 1, 0, 0, \
- 0, 0, 1, 0, \
- 0, 0, 0, 1])
-
-######################################################################
-# A list of channels to be tested
-######################################################################
-
-# C test channel (J. Proakis, Digital Communications, McGraw-Hill Inc., 2001)
-c_channel = [0.227, 0.460, 0.688, 0.460, 0.227]
-
-
-
-
-
-
-
-
-
-
-if __name__ == '__main__':
- f1=trellis.fsm('fsm_files/awgn1o2_4.fsm')
- #f2=trellis.fsm('fsm_files/awgn2o3_4.fsm')
- print f1.I(), f1.S(), f1.O()
- print f1.NS()
- print f1.OS()
- #print f2.I(), f2.S(), f2.O()
- #print f2.NS()
- #print f2.OS()
- ##f1.write_trellis_svg('f1.svg',4)
- #f2.write_trellis_svg('f2.svg',4)
- #f=fsm_concatenate(f1,f2)
- f=fsm_radix(f1,2)
-
- print "----------\n"
- print f.I(), f.S(), f.O()
- print f.NS()
- print f.OS()
- #f.write_trellis_svg('f.svg',4)
-
--
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