NDLI: A new approach to performance evaluation of generalized selection diversity receivers in wireless channels

Content Provider	IEEE Xplore Digital Library
Author	Annamalai, A. Tellambura, C.
Copyright Year	2001
Abstract	Motivated by potential applications to wideband cellular DS-CDMA and millimeter-wave communications, the study of the generalized selection combining (GSC) receiver that adaptively combines a subset of M "strongest" paths out of L available paths has intensified over the past few years. The study of the GSC(M, L) receiver is also important from a theoretical standpoint because this model encapsulates both the classical selection combining receiver and the maximal-ratio combining receiver as limiting cases. Despite its importance, published results on GSC(M, L) receiver performance in a generalized fading channel are still very limited, mainly due to the mathematical difficulty encountered while computing the first-order statistics of a linear sum of ordered random variables. This paper provides a partial solution to the problem on hand by deriving relatively simple-to-evaluate expressions for the moment generating function (MGF) of GSC output SNR in a variety of fading environments given that the individual branch SNRs are independent and identically distributed. Moreover, our generic single integral expression for the MGF of GSC output SNR reduces to a closed-form formula if the branch amplitudes follow either Rayleigh or Nakagami-m (positive integer fading index) distribution. An easily programmable recursive solution of the MGF in Nakagami-m channels is also provided. Our expressions hold for any M and L values, and thus facilitate a comprehensive analysis of GSC systems including the average symbol error probability (ASEP) analysis of a broad class of binary and M-ary modulations, average combined SNR and the outage rate of error probability analysis.
Starting Page	2309
Ending Page	2313
File Size	496614
Page Count	5
File Format	PDF
ISBN	0780370058
ISSN	10903038
DOI	10.1109/VTC.2001.957159
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-10-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Diversity reception Rayleigh channels Error probability Error analysis Wideband Multiaccess communication Millimeter wave communication Fading Statistics Random variables
Content Type	Text
Resource Type	Article

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