I’ve just been doing some preliminary testing with having one receiver and multiple transmitters and noticed that the standard deviation of RSSI values gets quite high with this setup. When the number of transmitters is reduced to just one the standard deviation is reduced by about a factor of 5. This is probably because of the multiple transmitters are interfering with each other and causing some sort of problem. This is alright for now though because the real plan was to have multiple receivers and a single transmitter.
September 28, 2009
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Maybe you now have some rough understanding of why things vary so much when we do trials, with lots of concurrent transmissions possible. Through randomness we try to cut down on collisions, but it’s imperfect.
Comment by Ted Herman — September 29, 2009 @ 3:11 pm