Performance Analysis of Cooperative Networks With Relay Selection Over Nakagami-m Fading Channels

被引：44

作者：

Alexandropoulos, George C. ^{[1
,2
]}

Papadogiannis, Agisilaos ^{[3
]}

Berberidis, Kostas ^{[1
]}

机构：

[1] Univ Patras, Dept Comp Engn & Informat, GR-26500 Patras, Greece

[2] Natl Ctr Sci Res Demokritos, Inst Informat & Telecommun, GR-15310 Athens, Greece

[3] Orange Labs, F-92794 Issy Les Moulineaux, France

来源：

IEEE SIGNAL PROCESSING LETTERS | 2010年 / 17卷 / 05期

关键词：

Cooperative networks; decode-and-forward; diversity; error probability; Nakagami-fading; outage probability; relay selection; OUTAGE PROBABILITY; DIVERSITY;

D O I：

10.1109/LSP.2010.2042992

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The performance of dual-hop Decode-and-Forward relaying with relay selection (RS) is analyzed over Nakagami-m fading channels. Assuming that the direct source-to-destination link is active, closed-form expressions for the moment generating and the cumulative distribution functions of a RS-based cooperation scheme that utilizes maximal-ratio diversity at the destination are derived. These expressions are used to obtain the outage probability (OP) and average symbol error probability (ASEP) of this pure RS scheme as well as of a rate-selective one that utilizes RS only when it provides higher achievable rate than that of the direct transmission. Numerically evaluated results, verified by computer simulations, show that, although, in terms of ASEP, relaying is always beneficial, in terms of OP, it should be disabled whenever the direct link is strong.

引用

页码：441 / 444

页数：4

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