BCH(256,16,113) code

N

Niv (KP)

Guest
I'm looking at a paper owhich talks about BCH(256,16,113) code. I
think it is some form of CRC, but acn't find any details on how to
implement in VHDL. If it is just a CRC variant, I'd like to know what
the appropriate taps are.

Anyone done this already?

Regards, Kev P.
 
"Niv (KP)" <kev.parsons@mbda-systems.com> wrote in message
news:5ac84a5a-5044-4a71-bc3a-b09c38f0eccd@s6g2000vbp.googlegroups.com...
I'm looking at a paper owhich talks about BCH(256,16,113) code. I
think it is some form of CRC, but acn't find any details on how to
implement in VHDL. If it is just a CRC variant, I'd like to know what
the appropriate taps are.

Anyone done this already?

Regards, Kev P.
Click to expand...
It is far more complex than your ordinary CRC,

http://en.wikipedia.org/wiki/BCH_code

Galois Fields mathematics is a good place to start :)

Hans
www.ht-lab.com
 
On 26 June, 10:16, "HT-Lab" <han...@ht-lab.com> wrote:
"Niv (KP)" <kev.pars...@mbda-systems.com> wrote in message

news:5ac84a5a-5044-4a71-bc3a-b09c38f0eccd@s6g2000vbp.googlegroups.com...

I'm looking at a paper owhich talks about BCH(256,16,113) code.  I
think it is some form of CRC, but acn't find any details on how to
implement in VHDL.  If it is just a CRC variant, I'd like to know what
the appropriate taps are.

Anyone done this already?

Regards, Kev P.

It is far more complex than your ordinary CRC,

http://en.wikipedia.org/wiki/BCH_code

Galois Fields mathematics is a good place to start :)

Hanswww.ht-lab.com
Click to expand...
Yes, I've tried, but it's fairly heavy going, mostly above my head;
haven't done any serious math since uni, and that was long, long ago,
in a galaxy......!!

KP.
 
Niv (KP) wrote:
Yes, I've tried, but it's fairly heavy going, mostly above my head;
haven't done any serious math since uni, and that was long, long ago,
in a galaxy......!!

KP.
Click to expand...
To remind yourself about GF arithmetic, have a read of a textbook or two,
maybe Lin and Costello would be a good place to start. Also, xapp371 might
give you some insight.
HTH, Syms.
 
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