On Mon, Nov 11, 2013 at 03:14:04PM +0530, Sumedha Goyal wrote: > Hello Aditya, > > 1. I tried checking for the average power but that doesn't work. Even with two > transmitters transmitting at the same time the energy detected by the receiver > doesn't change much. It remains in the same order. > 2. Is there any other simpler way of detecting collisions other than the > mentioned paper?
Sumedha, this problem is a very fundamental one, and there is no one single correct answer. Using power as a metric is tricky, as in practice, you never know the initial power levels of the inidivual received signals. And if you had a test, how could you be sure it correctly identified a collision, and you didn't simply lose a packet due to a bad wave propagation situation? Perhaps you should try and tackle this on the MAC layer. When there is a collision, you will receive neither packet correctly, perhaps that will trigger an ARQ etc. You can allocate slots to users, or something like that. MB -- Karlsruhe Institute of Technology (KIT) Communications Engineering Lab (CEL) Dipl.-Ing. Martin Braun Research Associate Kaiserstraße 12 Building 05.01 76131 Karlsruhe Phone: +49 721 608-43790 Fax: +49 721 608-46071 www.cel.kit.edu KIT -- University of the State of Baden-Württemberg and National Laboratory of the Helmholtz Association
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