Re: [Discuss-gnuradio] hdtv hacking

[Michael Dickens]

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