Minimum MSE design for multiuser MIMO relay

Authors:
Seunghun Jang;Janghoon Yang;Dong Ku Kim
Affiliations:
School of Electrical and Electronic Engineering, Yonsei University, Seoul, Korea;Department of Newmedia, Korean German Institute of Technology, Seoul, Korea;School of Electrical and Electronic Engineering, Yonsei University, Seoul, Korea
Venue:
IEEE Communications Letters
Year:
2010

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Abstract

We study a joint optimal design of transceiver and relaying architecture in terms of mean square error (MSE) performance for multi-user multiple-input multiple-output (MIMO) relaying system. We show a duality relationship in the design of MSE-optimal transceiver and relaying architecture. Based on that, we devise an alternating algorithm, which converges and provides a suboptimal joint design of transceiver and relaying. By simulation, we show that the proposed joint design improves on the average MSE performance of the existing transceiver and relaying architectures.