Re: [Discuss-gnuradio] How to detect collision when two packets are transmitted simultaneously from two transmitters.

[Marcus D. Leech]

Fundamentally a very hard problem.

Yes, this is a very hard problem.

Sumedha, you are implementing a TDMA scheme right? In a correctly implemented TDMA, there shouldn't be any collisions between transmitters that are using your TDMA protocol.

If you are using a probabilistic TDMA (like Slotted Aloha), then I suppose the best protocol is "transmit and pray". If the CRC check fails, simply retransmit.

Aditya

This all falls under the category of "wireless channel access protocols".  There have been a huge number of them over the years, and a certain
  amount of research with google and papers on the subject would be a good thing(tm).

If you have a reliable collision-detector scheme, you can use CSMA/CD.  If not, there's P-persistent CSMA.  And CSMA/CD, and TDMA schemes,
  and...

-- 
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org