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Multiuser MIMO Transceiver Design for Uplink and Downlink with Imperfect CSI

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Abstract

This paper considers a joint linear transmitter and receiver design for multi-user multiple-input multiple-output (MU-MIMO) systems using total mean square error (TMSE) criterion, subject to a total transmit power constraint assuming imperfect channel state information. Both the uplink and downlink MU-MIMO systems, which is employed with improper constellations such as binary phase shift-keying and \(M\)-ary amplitude shift-keying are considered. A minimum TMSE design is formulated as a nonconvex optimization problem under a total transmit power constraint and the closed-form optimum linear precoder and decoder for both the downlink and uplink MU-MIMO systems with improper modulation are determined by solving this nonconvex optimization problem. A novel contribution in this paper is to derive a closed-form optimum linear precoder and decoder for both the downlink and uplink MU-MIMO systems with improper modulation by solving the nonconvex optimization problem under total power constraint. The simulation results show that the performance of the proposed design is improved over the previous design.

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Authors and Affiliations

  1. Department of Electronics and Communication Engineering, School of EEE, SASTRA University, Thanjavur, India

    M. Raja

  2. Department of Electronics and Communication Engineering, National Institute of Technology (NIT), Tiruchirappalli, India

    P. Muthuchidambaranathan

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  1. M. Raja
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  2. P. Muthuchidambaranathan
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Correspondence to M. Raja.

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Raja, M., Muthuchidambaranathan, P. Multiuser MIMO Transceiver Design for Uplink and Downlink with Imperfect CSI. Wireless Pers Commun 75, 1215–1234 (2014). https://doi.org/10.1007/s11277-013-1418-z

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  • DOI: https://doi.org/10.1007/s11277-013-1418-z

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