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Cooperative Selection Combining in Body Area Networks: Switching Rates in Gamma Fading

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2 Author(s)
Smith, D.B. ; Networks Group, Nat. ICT Australia (NICTA), Canberra, ACT, Australia ; Miniutti, D.

An analytical expression for the switching rate of three-branch selection combining is derived for independent and identically distributed (i.i.d.) gamma fading. This expression can also be applied to lognormal, normal, Nakagami-m, Rayleigh, Weibull and generalized-gamma (or α - μ) fading channels. I.i.d. gamma fading models the `everyday' cooperative body area networks (BAN) well. Results from BAN measurements approximate three-branch analytical results, and branch approximate independence is validated. Results are also presented for two-branch cooperative selection combining. It is shown that `everyday' switching rates are slow enough to allow cooperative BAN.

Published in:

Wireless Communications Letters, IEEE  (Volume:1 ,  Issue: 4 )