Closed-form analysis of dual-diversity equal-gain combining over Rayleigh fading channels

Xiaoyuan Qi, Mohamed Slim Alouini, Young Chai Ko

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Starting with a new expression for the probability density function of the signal-to-noise ratio at the output of dual-diversity equal-gain combining (EGC) over Rayleigh channels, we provide closed-form expressions for the average bit and symbol error rate of M-ary phase-shift keying signals. Numerical examples indicate that EGC maintains a good diversity gain as long as the degree of unbalance is not very low but suffers a sharp and significant degradation when the degree of unbalance approaches zero.

Original languageEnglish
Pages (from-to)1120-1125
Number of pages6
JournalIEEE Transactions on Wireless Communications
Issue number6
Publication statusPublished - 2003 Nov
Externally publishedYes

Bibliographical note

Funding Information:
Manuscript received December 20, 2001; revised July 14, 2002; accepted July 15, 2002. The editor coordinating the review of this paper and approving it for publication is J. K. Cavers. This work was supported in part by the National Science Foundation (NSF) under Grant CCR-9983462 and Grant ECS-9979443. This paper was presented at the IEEE Vehicular Technology Conference (VTC Spring’2002), Birmingham, AL, May 2002.


  • Diversity combining
  • Equal gain combining
  • M-ary phase-shift-keying
  • Performance analysis
  • Rayleigh fading

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics


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