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![]() The "Turbo" codes are achievable in silicon with moderate effort. And the payment of a suitable fee to the folks who OWN the turbo codes at France Telecom http://www.francetelecom.com/en_EN/i...y/turbo_codes/ http://www.spectralicensing.com/licfaq.htm Note also that turbo and LDPC are really suited to longer block lengths (1000 bits and bigger). For small block lengths, codes like Hamming might be better. Reed-Solomon combined with Viterbi decoders of convolutional codes are also popular. Note that in deep space, at a bit rate of 8 bps, you might not want to use a code with a 1000 bit codeblock.. A work going back a dozen years or more can be found at: http://sss-mag.com/G3RUH/index2.html (consult the adjoining pages for fuller discussion) 73's Richard Clark, KB7QHC |
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