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Jordan Sherer
2018-02-08 21:28:33 -05:00
commit 678c1d3966
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#!/bin/sh
# Example of coding using a (7,4) Hamming code, with transmission through
# a Binary Symmetric Channel with error probability of 0.05.
#
# This example shows how random source messages can be encoded as codewords,
# transmitted through the simulated channel, decoded, and the message bits
# extracted from the codewords. The final result is in ex-ham7b.ext, which can
# be compared to ex-ham7b.src.
set -e # Stop if an error occurs
set -v # Echo commands as they are read
make-pchk ex-ham7b.pchk 3 7 0:0 0:3 0:4 0:5 1:1 1:3 1:4 1:6 2:2 2:4 2:5 2:6
make-gen ex-ham7b.pchk ex-ham7b.gen dense
rand-src ex-ham7b.src 1 4x1000
encode ex-ham7b.pchk ex-ham7b.gen ex-ham7b.src ex-ham7b.enc
transmit ex-ham7b.enc ex-ham7b.rec 1 bsc 0.05
decode ex-ham7b.pchk ex-ham7b.rec ex-ham7b.dec bsc 0.05 enum-bit ex-ham7b.gen
verify ex-ham7b.pchk ex-ham7b.dec ex-ham7b.gen ex-ham7b.src
extract ex-ham7b.gen ex-ham7b.dec ex-ham7b.ext