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

Mohamed Slim Alouini; Marvin K. Simon

doi:10.1109/26.837044

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 journal › Article › peer-review

383 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 language	English (US)
Pages (from-to)	401-415
Number of pages	15
Journal	IEEE Transactions on Communications
Volume	48
Issue number	3
DOIs	https://doi.org/10.1109/26.837044
State	Published - 2000
Externally published	Yes

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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10.1109/26.837044

Cite this

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AU - Simon, Marvin K.

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AB - 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.

KW - Generalized selection combining

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JO - IEEE Transactions on Communications

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

Abstract

Keywords

ASJC Scopus subject areas

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