Performance Analysis of Opportunistic and All-Participate Relaying with Imperfect Channel Estimation

Lei WANG  Yueming CAI  Weiwei YANG  

IEICE TRANSACTIONS on Communications   Vol.E94-B   No.11   pp.3151-3154
Publication Date: 2011/11/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.3151
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
imperfect channel estimation,  average symbol error rate,  diversity and multiplexing tradeoff,  

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For amplify-and-forward (AF) relaying with imperfect channel estimation, we present the average symbol error rate (SER) and the diversity and multiplexing tradeoff (DMT) analysis for both opportunistic relaying (OPR) and all-participate relaying (APR) schemes. SER comparisons show that when the channel estimation quality order is no larger than 1, OPR will perform worse than APR in high SNR region. Moreover, small channel estimation quality orders will also lead to significant DMT loss.