[Discuss-gnuradio] Re: The primary issue with the Lazy Viterbi Decoder

[Eric Blossom]

On Tue, Aug 01, 2006 at 11:06:11AM -0400, Michael Dickens wrote:
> I'm working on programming the "Lazy" Viterbi (convolutional, maximum  
> likelihood) decoder right now.  See
> < http://citeseer.ist.psu.edu/599573.html >
> < 
> http://vanu.com/resources/publications/2002fast_maximum_likelihood_decoder.pdf
>  >
> 
> I have a few issues which I'm trying to resolve, and maybe someone in  
> GR-land knows the answer(s) or knows someone ...
> 
> The primary issue which they don't address is: what happens when a PQ  
> storage slot is already occupied but another metric is computed which  
> would need that slot (overwrite?  but which one)?  There is no  
> mechanism described to handle this conflict, and neither of the  
> metrics can necessarily be dropped.  (I think) It's trivial to come  
> up with an example where this might happen and neither metric could  
> yet be dropped, so clearly they had to resolve this issue.  But it's  
> not in the text of the report, so I'm a-priori trying to think of a  
> (reasonably simple) way around it.

How about just dropping a note to the authors?
Their email addresses are at the bottom of column one of the report.

Eric