Hi Alberto,
On 3/30/2016 1:16 PM, Alberto I2PHD wrote:
> On 3/30/2016 7:08 PM, Joe Taylor wrote:
>
>> /More recently, Steve (K9AN) and I developed an open-source Reed Solomon
>> decoder for the (63,12). Many messages about this work are in the
>> wsjt-devel Archives, and the code is now part of WAJT-X, WSJT, and
>> MAP65. The Koetter-Vardy decoder is no longer used by any of our
>> programs.
>>
>> Steve and I have written a paper on the"Franke-Taylor" soft-decision
>> decoder. It will appear next month in the ARRL journal QEX. A
>> "preprint" has been posted at the following link:
>>
>> //http://physics.princeton.edu/pulsar/K1JT/ftrsd.pdf//
>> /
>
> Hi Joe,
>
> thanks for your answer and for the pointer to the code.
> Apparently your soft decoder is meant for a GF(2^6) field.
> How difficult would it be to modify it for a GF(2^8), i.e. for a
> decoder able to deal with the entire ASCII alphabet ?
That could certainly be done. It's hard to be quantitative about how
difficult a task that would be, but our existing code was not written in
a way that will make it trivial.
You would need to study the present code (which is reasonably well
commented) and make your own estimate.
-- Joe, K1JT
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