An MGF-based performance analysis of generalized selection combining over rayleigh fading channels

Mohamed-Slim Alouini*, Marvin K. Simon

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

365 Scopus citations

Abstract

Using the notion of the "spacing" between ordered exponential random variables, a performance analysis of the generalized selection combining (GSC) diversity scheme over Rayleigh fading channels is presented and compared with that of the conventional maximal-ratio combining and selection combining schemes. Starting with the moment generating function of the GSC output signal-to-noise ratio (SNR), we derive closed-form expressions for the average combined SNR, outage probability, and average error probability of a wide variety of modulation schemes operating over independently, identically distributed (i.i.d.) diversity paths. Because of their simple form, these expressions readily allow numerical evaluation for cases of practical interest. The results are also extended to the case of non-i.i.d. diversity paths.

Original languageEnglish (US)
Pages (from-to)401-415
Number of pages15
JournalIEEE Transactions on Communications
Volume48
Issue number3
DOIs
StatePublished - Dec 1 2000

Keywords

  • Generalized selection combining
  • Hybrid sc/mrc
  • Maximal ratio combining diversity
  • Rayleigh fading
  • Selection combining

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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