Robust Transceiver Design for Multiuser MIMO Downlink

Ubaidulla, P and Chockalingam, A (2008) Robust Transceiver Design for Multiuser MIMO Downlink. In: IEEE Global Telecommunications Conference (GLOBECOM 08), NOV 30-DEC 04, 2008, New Orleans, LA.

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Abstract

In this paper, we consider robust joint linear precoder/receive filter design for multiuser multi-input multi-output (MIMO) downlink that minimizes the sum mean square error (SMSE) in the presence of imperfect channel state information (CSI). The base station is equipped with multiple transmit antennas, and each user terminal is equipped with multiple receive antennas. The CSI is assumed to be perturbed by estimation error. The proposed transceiver design is based on jointly minimizing a modified function of the MSE, taking into account the statistics of the estimation error under a total transmit power constraint. An alternating optimization algorithm, wherein the optimization is performed with respect to the transmit precoder and the receive filter in an alternating fashion, is proposed. The robustness of the proposed algorithm to imperfections in CSI is illustrated through simulations.

Item Type:	Conference Paper
Series.:	IEEE Global Telecommunications Conference (Globecom)
Publisher:	IEEE
Additional Information:	Copyright 2008 IEEE. Personal use of this material is permitted.However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords:	multiuser MIMO downlink;multiuser interference;imperfect CSI; alternating optimization
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	08 Apr 2011 05:28
Last Modified:	08 Apr 2011 05:28
URI:	http://eprints.iisc.ac.in/id/eprint/36594

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