Re: File transfer protocol for Radio Links
From: keith (krw_at_att.bizzzz)
Date: 02/24/05
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Date: Wed, 23 Feb 2005 22:02:53 -0500
On Wed, 23 Feb 2005 19:52:11 +0000, Guy Macon wrote:
>
>
>
> BobG wrote:
>
>>Why not send every byte 3 times and take the one that gets received 2
>>or 3 times? Of course, that doesnt give much of a clue of what to do if
>>you send 3 bytes and get 3 different received bytes.... maybe send 3
>>bytes with parity? Yeah... that might work.... 200% overhead, but
>>reliable.....
>
> Better to send the entire message three times. Radio interference
> tends to come in bursts which would wipe out several bytes in a row.
Or stir the bits before sending. All ECC methods must be tailored for the
expected failure modes.
-- Keith
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