Re: cyclic redundancy check 4-bit

On May 8, 11:16 am, Vladimir Vassilevsky <antispam_bo...@xxxxxxxxxxx>
wrote:
bwv539 wrote:
Any standard implementation?
I need to send 4-bit messages over a very slow and noisy link, I
cannot afford 8-bit crc.
thank you.

The Hamming code 7.4 or 8.4 is what you need.


Well, maybe.

But if the link is very slow, or the noise is bursty, a single-bit ECC
code that doubles the required bandwidth isn't going to help him much.

Then again, a 4-bit CRC isn't going to help much more than a simple
checksum, either...

Regards,
-=Dave


.

Relevant Pages

  • Re: cyclic redundancy check 4-bit
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  • Re: cyclic redundancy check 4-bit
    ... I need to send 4-bit messages over a very slow and noisy link, ... cannot afford 8-bit crc. ... a 4-bit CRC isn't going to help much more than a simple ... checksum, either... ...
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  • Re: cyclic redundancy check 4-bit
    ... Any standard implementation? ... I need to send 4-bit messages over a very slow and noisy link, ... cannot afford 8-bit crc. ...
    (comp.arch.embedded)
  • cyclic redundancy check 4-bit
    ... Any standard implementation? ... I need to send 4-bit messages over a very slow and noisy link, ... cannot afford 8-bit crc. ...
    (comp.arch.embedded)
  • Re: cyclic redundancy check 4-bit
    ... The Hamming code 7.4 or 8.4 is what you need. ... You don't want CRC, or checksums. ... You want an error correcting ...
    (comp.arch.embedded)