A Novel Power Allocation and Relay Selection Scheme in AF Cooperative Networks with Mean Channel Gain Information

Hui HUI  Shihua ZHU  Guobing LI  

IEICE TRANSACTIONS on Communications   Vol.E92-B   No.1   pp.342-345
Publication Date: 2009/01/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.342
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
cooperative communications,  amplify-and-forward,  relay selection,  power allocation,  

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In this letter, a novel power allocation scheme is proposed to improve the outage performance of an amplify-and-forward (AF) cooperative communication network with multiple potential relays under the assumption that only mean channel gains are available at the transmitters. In this scheme, power allocation is studied jointly with a relay selection algorithm which has low computational complexity. Simulation results demonstrate the performance improvement of the proposed scheme in terms of outage behavior.