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Re: [Discuss-gnuradio] hdtv hacking

From: Michael Dickens
Subject: Re: [Discuss-gnuradio] hdtv hacking
Date: Fri, 7 Apr 2006 19:11:21 -0400

On Apr 7, 2006, at 6:49 PM, Charles Swiger wrote:
work - cool! (putting skip AFTER  inter, deinter). I'll finish the
test code and move on to Trellis Encoder / Viterbi Decoder.

I have a trellis encoder and the V decoder is in debugging (by me) - hope to have version 1 finished by the end of this weekend. These are generic encoder / decoder blocks, taking arbitrary # of input streams and element sizes and reproducing that on the output. Throughput of the encoder using a (2 output, 2 input, 2 memory / input) code (meaning 16 states) is around 10 Mb/s without optimizing the programming. As the decoder isn't operational, I don't know how fast it will be ... but it's mush more complex than the encoder (no surprise there) and thus will definitely be slower than the encoder.

I don't know if these would be of interest for use by ATSC, but I'm happy to provide them once I know they work. Would also make for good beta testing ;-) I will provide them to the overall GR project once I know they work and are reasonable optimized. - MLD

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