Digital transceiver design for two-way AF-MIMO relay systems with imperfect CSI

Chia-Chang Hu; Yu-Fei Chou; Kui-He Chen

doi:10.1117/12.2036121

24 September 2013 Digital transceiver design for two-way AF-MIMO relay systems with imperfect CSI

Chia-Chang Hu, Yu-Fei Chou, Kui-He Chen

Proceedings Volume 8871, Satellite Data Compression, Communications, and Processing IX; 88710U (2013) https://doi.org/10.1117/12.2036121
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

In the paper, combined optimization of the terminal precoders/equalizers and single-relay precoder is proposed for an amplify-and-forward (AF) multiple-input multiple-output (MIMO) two-way single-relay system with correlated channel uncertainties. Both terminal transceivers and relay precoding matrix are designed based on the minimum mean square error (MMSE) criterion when terminals are unable to erase completely self-interference due to imperfect correlated channel state information (CSI). This robust joint optimization problem of beamforming and precoding matrices under power constraints belongs to neither concave nor convex so that a nonlinear matrix-form conjugate gradient (MCG) algorithm is applied to explore local optimal solutions. Simulation results show that the robust transceiver design is able to overcome effectively the loss of bit-error-rate (BER) due to inclusion of correlated channel uncertainties and residual self-interference.

Citation Download Citation

Chia-Chang Hu, Yu-Fei Chou, and Kui-He Chen "Digital transceiver design for two-way AF-MIMO relay systems with imperfect CSI", Proc. SPIE 8871, Satellite Data Compression, Communications, and Processing IX, 88710U (24 September 2013); https://doi.org/10.1117/12.2036121

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