A study of optimization problem for amplify-and-forward relaying over weibull fading channels

Salama Said Ikki, Sonia Aissa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations

Abstract

This paper addresses the power allocation and relay positioning problems in amplify-and-forward cooperative networks operating in Weibull fading environments. We study adaptive power allocation (PA) with fixed relay location, optimal relay location with fixed power allocation, and joint optimization of the PA and relay location under total transmit power constraint, in order to minimize the outage probability and average error probability at high signal-to-noise ratios (SNR). Analytical results are validated by numerical simulations and comparisons between the different optimization schemes and their performance are provided. Results show that optimum PA brings only coding gain, while optimum relay location yields, in addition to the latter, diversity gains as well. Also, joint optimization improves both, the diversity gain and coding gain. Furthermore, results illustrate that the analyzed adaptive algorithms outperform uniform schemes. ©2010 IEEE.
Original languageEnglish (US)
Title of host publication2010 IEEE 72nd Vehicular Technology Conference - Fall
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
ISBN (Print)9781424435746
DOIs
StatePublished - Sep 2010

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