Joint optimization of source beamformer and relay coefficients using MSE criterion

Batu K. Chalise; Yimin D. Zhang; Moeness G. Amin

doi:10.1117/12.920479

3 May 2012 Joint optimization of source beamformer and relay coefficients using MSE criterion

Batu K. Chalise, Yimin D. Zhang, Moeness G. Amin

Proceedings Volume 8404, Wireless Sensing, Localization, and Processing VII; 84040H (2012) https://doi.org/10.1117/12.920479
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

Abstract

The joint optimization of source beamformer and distributed relay coefficients is considered for a cooperative network that uses the output mean-square error (MSE) as the performance metric. Two methods are proposed for solving this nonconvex optimization problem. The first approach iteratively optimizes the source beamformer and relay coefficients, whereas the second method optimizes the relay coefficients keeping the source beamformer as the maximum-ratio-transmitter (MRT). Both approaches are reformulated as relaxed semidefinite programming problems. The optimality of MRT is proven analytically under some conditions. The superiority of the proposed methods is verified using numerical examples.

Citation Download Citation

Batu K. Chalise, Yimin D. Zhang, and Moeness G. Amin "Joint optimization of source beamformer and relay coefficients using MSE criterion", Proc. SPIE 8404, Wireless Sensing, Localization, and Processing VII, 84040H (3 May 2012); https://doi.org/10.1117/12.920479

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