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On the Performance of Amplify-and-Forward Relay Systems with Limited Feedback Beamforming
Erlin ZENG Shihua ZHU Xuewen LIAO Zhimeng ZHONG Zhenjie FENG
IEICE TRANSACTIONS on Communications
Publication Date: 2008/06/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
amplify-and-forward, relaying, beamforming, limited feedback, outage probability,
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Prior studies have shown that the performance of amplify-and-forward (AF) relay systems can be considerably improved by using multiple antennas and low complexity linear processing at the relay nodes. However, there is still a lack of performance analysis for the cases where the processing is based on limited feedback (LFB). Motivated by this, we derive the closed-form expression of the outage probability of AF relay systems with LFB beamforming in this letter. Simulation results are also provided to confirm the analytical studies.