Opportunistic Cooperative Communications over Nakagami-m Fading Channels

Runping YUAN  Taiyi ZHANG  Jing ZHANG  Jianxiong HUANG  Zhenjie FENG  

Publication
IEICE TRANSACTIONS on Communications   Vol.E93-B   No.10   pp.2812-2816
Publication Date: 2010/10/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E93.B.2812
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
Keyword: 
opportunistic cooperation,  amplify-and-forward,  Nakagami-m fading,  symbol error rate,  outage probability,  

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Summary: 
In this letter, a dual-hop wireless communication network with opportunistic amplify and forward (O-AF) relay is investigated over independent and non-identically distributed Nakagami-m fading channels. Employing Maclaurin series expansion around zero to derive the approximate probability density function of the normalized instantaneous signal-to-noise ratio (SNR), the asymptotic symbol error rate (SER) and outage probability expressions are presented. Simulation results indicate that the derived expressions well match the results of Monte-Carlo simulations at medium and high SNR regions. By comparing the O-AF with all AF relaying analyzed previously, it can be concluded that the former has significantly better performance than the latter in many cases.