Pilot power optimization for AF relaying using maximum likelihood channel estimation

Kezhi Wang, Yunfei Chen, Mohamed Slim Alouini, Feng Xu

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

Abstract

Bit error rates (BERs) for amplify-and-forward (AF) relaying systems with two different pilot-symbol-aided channel estimation methods, disintegrated channel estimation (DCE) and cascaded channel estimation (CCE), are derived in Rayleigh fading channels. Based on these BERs, the pilot powers at the source and at the relay are optimized when their total transmitting powers are fixed. Numerical results show that the optimized system has a better performance than other conventional nonoptimized allocation systems. They also show that the optimal pilot power in variable gain is nearly the same as that in fixed gain for similar system settings.

Original languageEnglish
Title of host publicationVTC2014-Fall
Subtitle of host publication2014 IEEE 80th Vehicular Technology Conference, Proceedings
PublisherIEEE
ISBN (Electronic)9781479944491
DOIs
Publication statusPublished - 4 Dec 2014
Event80th IEEE Vehicular Technology Conference, VTC 2014-Fall - Vancouver, Canada
Duration: 14 Sep 201417 Sep 2014

Publication series

NameIEEE Vehicular Technology Conference
PublisherIEEE
ISSN (Print)1090-3038

Conference

Conference80th IEEE Vehicular Technology Conference, VTC 2014-Fall
CountryCanada
CityVancouver
Period14/09/1417/09/14

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