Re: [Discuss-gnuradio] A Question on Packet Processing

[Anastasopoulos Achilleas]

Brian,

Yes it can!

You need to set a decision delay D and then it would operate in a 
fixed-delay mode, ie, it would spit out a decision at every time instance
with a delay of D compared to the input sample.
The survivor matrix (of size DxS) will need to be updated at every
time instance in order to make a decision (thus the additional overhead).

I am not sure I have the time to code this though.... :-)
but it shouldn't be that hard.

Achilleas


On Wed, 21 Feb 2007, Brian Padalino wrote:

> Achilleas,
>
> Could the Viterbi block be implemented in such a fashion that the
> algorithm was a streaming implementation as opposed to a fixed block
> size?
>
> That way, you could just send in a vector of deinterleaved soft
> decisions, and (with a little bit of overhead) the Viterbi block could
> take in any variable length block with zero padding at the end.
> Moreover, it would retain its generic nature but would increase
> computation by adding a slight overhead.
>
> Brian