RE: [ecc] Reed-Solomon (15,11)

[faradhini@eudoramail.com]

Hi,

I need to know what algorithm did you use ? 
please check once more is the theory is right ?
I seem that you have solved the problem...

faradhini

----- Original Message ----- 
From: mostafa_fawzy@y...  
To: ecc@o...  
Date: Tue, 6 May 2003 13:12:17 -0100 
Subject: RE: [ecc] Reed-Solomon (15,11) 

> 
> 
> HI, 
> the system works good for 1 error, while for two errors it 
> sometimes 
> works and sometimes don't. 
> for zero code: if the received data was (0000)(1001)(1001)(0...'s) 
> then 
> the location of errors is 
> [ (1010) -->alpha(9) ]instead of [ (1101)-->alpha(13) ] and 
> [ (1100) -->alpha(6) ]instead of [ (1111)-->alpha(12) ]. 
> for zero sent code ;if the errors were anywhere else it will be 
> corrected 
> right. 
> for non zero code; two sucessive errors is not corrected. 
> 
> i think that the problem is in the error locator polynomial. 
> 
> i have captures some pictures these problems but i don't know how 
> to 
> send files on opencores. 
> 
> I HOPE YOU CAN HELP ME. 
> THANKS ALOT. 
> 
> ----- Original Message ----- 
> From: "AJ Sahagun" <aj@a... > 
> To: <ecc@o... > 
> Date: Tue, 6 May 2003 09:05:32 +0800 
> Subject: RE: [ecc] Reed-Solomon (15,11) 
> 
> > 
> > 
> > 
> > Hi, I think I've encountered this before, but I need to know 
> > whether you're 
> > encountering the same problem I had in the past. Can you give 
> us 
> > exact 
> > details on when your system does not work (something like, "it 
> does 
> > not work 
> > if I simulate X number of errors", etc.)? 
> > 
> > 
> > -----Original Message----- 
> > From: owner-ecc@o...  [mailto:owner-ecc@o... ]On 
> > Behalf 
> > Of mostafa_fawzy@y... 
> > Sent: Tuesday, May 06, 2003 9:33 AM 
> > To: ecc@o... 
> > Subject: [ecc] Reed-Solomon (15,11) 
> > 
> > 
> > HI, 
> > 
> > (I still consider my self as a beginner) 
> > 
> > i finished implementing Reed_Solomon (15,11) using VHDL on 
> FPGA 
> > technology. 
> > but it is not ALWAYS working right. 
> > it corrects some data and don't correct others. 
> > i think that the problem is in the error locator polynomial. 
> > i didn't know how to implement it so i solved it analytically 
> and 
> > got all 
> > its 
> > casses then i just used some conditions in order to use the 
> > suitable 
> > polynomial for each special case. 
> > 
> > 
> > i'm seeking for ideas about how to implement this polynomial, 
> > i'll be grateful for any other help or any other general 
> > information about 
> > anything. 
> > THANKS ALOT. 
> > 
> 
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