Good wireless data error correction scheme?
Thanks everyone for the excellent input re: NMEA error correction.
However, I now have a new question:
I'm sending some data serially from stamp to stamp with those low power
wireless RF modules. If I disconnect the "receiving" stamp and look at the
output from the receiver in hyperterminal I notice alot of errors. Maybe
one in ten transmissions are error free. Is there a reliable scheme for
fixing this? I've considered discarding the garbled info but one in ten
seems awfully high. . .I know there are amateur packet radio protocols (ie.
AX.25) - do these address this? And would it be possible to implement such
a thing on a stamp?
all input appreciated, Duncan
However, I now have a new question:
I'm sending some data serially from stamp to stamp with those low power
wireless RF modules. If I disconnect the "receiving" stamp and look at the
output from the receiver in hyperterminal I notice alot of errors. Maybe
one in ten transmissions are error free. Is there a reliable scheme for
fixing this? I've considered discarding the garbled info but one in ten
seems awfully high. . .I know there are amateur packet radio protocols (ie.
AX.25) - do these address this? And would it be possible to implement such
a thing on a stamp?
all input appreciated, Duncan
Comments
If you are using Ming rx/tx, I am not surprised. I tried the SAW tx and am
rx; both the workmanship and performance were poor. Did not try the LC tx.
I had much better performance with a tx/rx from Ramsey, but they were more
expensive.
Ray McArthur
Original Message
From: <orthner@s...>
To: <basicstamps@egroups.com>
Sent: Monday, January 15, 2001 11:57 AM
Subject: [noparse][[/noparse]basicstamps] Good wireless data error correction scheme?
> Thanks everyone for the excellent input re: NMEA error correction.
> However, I now have a new question:
>
> I'm sending some data serially from stamp to stamp with those low
power
> wireless RF modules. If I disconnect the "receiving" stamp and look at the
> output from the receiver in hyperterminal I notice alot of errors. Maybe
> one in ten transmissions are error free. Is there a reliable scheme for
> fixing this? I've considered discarding the garbled info but one in ten
> seems awfully high. . .I know there are amateur packet radio protocols
(ie.
> AX.25) - do these address this? And would it be possible to implement such
> a thing on a stamp?