Impact of fading correlation and unequal branch gains on the capacity of diversity systems

Joshua W. Shao*, Mohamed Slim Alouini, Andrea J. Goldsmith

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

29 Scopus citations

Abstract

We investigate the effect of fading correlation and branch gain imbalance on the Shannon capacity of diversity systems in conjunction with adaptive transmission techniques. This capacity provides the theoretical upper bound for the spectral efficiency of adaptive transmission schemes. We obtain closed-form expressions for this capacity for Rayleigh fading channels under four adaptation policies: optimal power and rate adaptation (opra), optimal rate adaptation with constant power (ora), truncated channel inversion with fixed rate (tifr), and complete channel inversion with fixed rate (cifr). We give numerical examples illustrating the main trends and offer comparisons on the behavior of opra, ora, tifr, and cifr under variation of different parameters.

Original languageEnglish (US)
Title of host publicationIEEE VTS 50th Vehicular Technology Conference, VTC 1999-Fall
Pages2159-2163
Number of pages5
Volume3
StatePublished - 1999
Externally publishedYes
EventIEEE VTS 50th Vehicular Technology Conference, VTC 1999-Fall - Houston, TX, USA
Duration: Sep 19 1999Sep 22 1999

Other

OtherIEEE VTS 50th Vehicular Technology Conference, VTC 1999-Fall
CityHouston, TX, USA
Period09/19/9909/22/99

ASJC Scopus subject areas

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

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