On the performance of pilot symbol assisted modulation for cooperative systems with imperfect channel estimation

M. Jafar Taghiyar, Sami Muhaidat, Jie Liang

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

12 Scopus citations

Abstract

In this paper, we analyze the impact of imperfect channel estimation on the performance of pilot symbol assisted modulation (PSAM) used in a relay communication system with distributed space time block code (STBC) and amplify-andforward protocol. We derive correlation coefficients between the channel coefficients and their estimates when the relayto-destination link is either non-fading or fading, in terms of Doppler frequency, number of pilot symbols and SNR. This enables us to choose the optimum number of pilot symbols to compensate for the estimation error when the fading and Doppler effects are severe. Our performance analysis demonstrates that the presence of fading in the relay-to-destination link manifests itself by introducing additional Doppler frequency terms. Furthermore, we derive a tight lower bound for the bit error rate (BER) of BPSK modulation with channel estimation errors in terms of cross correlation coefficients and the number of pilot symbols. Simulation results are also presented to validate our analytical results.

Original languageBritish English
Title of host publication2010 IEEE Wireless Communications and Networking Conference, WCNC 2010 - Proceedings
DOIs
StatePublished - 2010
EventIEEE Wireless Communications and Networking Conference 2010, WCNC 2010 - Sydney, NSW, Australia
Duration: 18 Apr 201021 Apr 2010

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
ISSN (Print)1525-3511

Conference

ConferenceIEEE Wireless Communications and Networking Conference 2010, WCNC 2010
Country/TerritoryAustralia
CitySydney, NSW
Period18/04/1021/04/10

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