IEEE Transactions on Communications
Diversity analysis of peaky FSK signaling in fading channels
IEEE Transactions on Wireless Communications
Collaborative spectrum sensing with imperfect gaussian channel estimation
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Optimized simple bounds for diversity systems
IEEE Transactions on Communications
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The performance of the selection diversity combiner in slowly and flatly fading channels is studied. Unlike most previous works where perfect knowledge of the signal amplitude and the noise power is assumed, in this analysis, knowledge of the signal amplitude and the noise power is obtained by using practical estimators that introduce estimation errors. The average symbol error rate of the combiner is derived for noncoherent M-ary frequency shift keying signals, independent and non-identically distributed diversity branches and unequal noise powers. The effect of estimation errors on the performance of the combiner is evaluated and illustrated by numerical examples. An interesting and useful conclusion is that it is disadvantageous to employ signal-to-noise ratio as a branch selection criterion when the branch noise powers are known a priori to be equal