What does 'M' mean in RS(544, 514, T=15, M=10)?

Hi,
I know RS code has a 't' parameter, but I don't know the last one in
RS(544, 514, T=15, M=10).

Can you tell me that?


Thanks,

fl  <rxjwg98@gmail.com> wrote:

>I know RS code has a 't' parameter, but I don't know the last one in
>RS(544, 514, T=15, M=10).
>
>Can you tell me that?

Number of bits per symbol.  In other words, this is a code over
GF(2^10).

Steve

On Saturday, October 27, 2018 at 9:55:20 PM UTC-6, fl wrote:
> Hi,
> I know RS code has a 't' parameter, but I don't know the last one in
> RS(544, 514, T=15, M=10).
> 
> Can you tell me that?
> 
> 
> Thanks,

The codeword length N of an unshortened code is normally one less than the field size, 2**M-1, or 1023 for M=10, but in this case N=544 and the code is very shortened.

It looks like you are researching the IEEE 802.3 KP4 Reed-Solomon code.