Improving Fairness without Outage Performance Deterioration in Selection Cooperation

Qian ZHANG  Yuhan DONG  Xuedan ZHANG  Benzhou JIN  Xiaokang LIN  

IEICE TRANSACTIONS on Communications   Vol.E96-B   No.2   pp.664-667
Publication Date: 2013/02/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E96.B.664
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
selection cooperation,  fairness,  decode-and-forward,  outage probability,  

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The traditional selection cooperation scheme selects the relay with best instantaneous receive signal-to-noise ratio to forward the message and achieves good outage performance, which may however cause poor fairness among relays. In this letter, we propose two practical selection cooperation schemes in Decode-and-Forward (DF) fashion to improve the fairness of relay selection. Numerical results suggest that both of the proposed schemes can achieve fairness close to the strict fairness scheme without outage performance deterioration. It is also validated that these schemes have lower complexities than traditional ones and therefore are practical for real networks.