mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2025-07-30 20:52:28 -04:00
8c53e407e2
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6452 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
62 lines
2.3 KiB
Bash
Executable File
62 lines
2.3 KiB
Bash
Executable File
#!/bin/sh
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# this script characterizes a single code over a narrow range of Eb/No
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# note relationship between noise standard deviation, sigma, and Eb/No:
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# Eb/No = 1/(2*R*sigma^2)
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# If R=1/2, then Eb/No = 1/sigma^2 Right? Check this.
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set -e # Stop if an error occurs
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set -v # Echo commands as they are read
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#make-ldpc ldpc-144-72.pchk 80 160 12 evenboth 6x3/4x4 no4cycle
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#make-ldpc ldpc-144-72.pchk 72 144 33 evenboth 6x3/4x4 no4cycle
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#make-ldpc ldpc-144-72.pchk 72 144 8 evenboth 3 no4cycle
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#make-ldpc ldpc-144-72.pchk 72 144 1087 evenboth 3x3/7x4 no4cycle
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#make-ldpc ldpc-144-72.pchk 72 144 1022 evenboth 4x3/6x4 no4cycle
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make-ldpc ldpc-144-72.pchk 72 144 3012 evenboth 3x3/7x4 no4cycle
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#cp ldpc-144-72-6x3-4x4-sf1.pchk ldpc-144-72.pchk
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make-gen ldpc-144-72.pchk ldpc-144-72.gen dense
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rand-src ldpc-144-72.src 2 72x1000000
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encode ldpc-144-72.pchk ldpc-144-72.gen ldpc-144-72.src \
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ldpc-144-72.enc
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# NOISE STANDARD DEVIATION 0.75, Eb/N0 = 2.50 dB
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transmit ldpc-144-72.enc ldpc-144-72.rec 1 awgn 0.75
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decode ldpc-144-72.pchk ldpc-144-72.rec ldpc-144-72.dec awgn 0.75\
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prprp 250
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verify ldpc-144-72.pchk ldpc-144-72.dec ldpc-144-72.gen \
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ldpc-144-72.src
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# NOISE STANDARD DEVIATION 0.80, Eb/N0 = 1.94 dB
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transmit ldpc-144-72.enc ldpc-144-72.rec 1 awgn 0.80
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decode ldpc-144-72.pchk ldpc-144-72.rec ldpc-144-72.dec awgn 0.80\
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prprp 250
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verify ldpc-144-72.pchk ldpc-144-72.dec ldpc-144-72.gen \
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ldpc-144-72.src
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# NOISE STANDARD DEVIATION 0.85, Eb/N0 = 1.41 dB
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transmit ldpc-144-72.enc ldpc-144-72.rec 1 awgn 0.85
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decode ldpc-144-72.pchk ldpc-144-72.rec ldpc-144-72.dec awgn 0.85\
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prprp 250
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verify ldpc-144-72.pchk ldpc-144-72.dec ldpc-144-72.gen \
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ldpc-144-72.src
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# NOISE STANDARD DEVIATION 0.90, Eb/N0 = 0.92 dB
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transmit ldpc-144-72.enc ldpc-144-72.rec 1 awgn 0.90
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decode ldpc-144-72.pchk ldpc-144-72.rec ldpc-144-72.dec awgn 0.90\
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prprp 250
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verify ldpc-144-72.pchk ldpc-144-72.dec ldpc-144-72.gen \
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ldpc-144-72.src
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# NOISE STANDARD DEVIATION 0.95, Eb/N0 = 0.45 dB
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transmit ldpc-144-72.enc ldpc-144-72.rec 1 awgn 0.95
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decode ldpc-144-72.pchk ldpc-144-72.rec ldpc-144-72.dec awgn 0.95\
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prprp 250
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verify ldpc-144-72.pchk ldpc-144-72.dec ldpc-144-72.gen \
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ldpc-144-72.src
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