Linear Precoding for the MIMO Multiple Access Channel With Finite Alphabet Inputs and Statistical CSI

Wu Y, Wen CK, Xiao C, Gao X, Schober R (2015)

Publication Language: English

Publication Type: Journal article

Publication year: 2015

Journal

IEEE Transactions on Wireless Communications Institute of Electrical and Electronics Engineers (IEEE)

Book Volume: 14

Pages Range: 983 - 997

Journal Issue: 2

DOI: 10.1109/TWC.2014.2363105

Abstract

In this paper, we investigate the design of linear precoders for the multiple-input-multiple-output (MIMO) multiple access channel (MAC). We assume that statistical channel state information (CSI) is available at the transmitters and consider the problem under the practical finite alphabet input assumption. First, we derive an asymptotic (in the large system limit) expression for the weighted sum rate (WSR) of the MIMO MAC with finite alphabet inputs and Weichselberger's MIMO channel model. Subsequently, we obtain the optimal structures of the linear precoders of the users maximizing the asymptotic WSR and an iterative algorithm for determining the precoders. We show that the complexity of the proposed precoder design is significantly lower than that of MIMO MAC precoders designed for finite alphabet inputs and instantaneous CSI. Simulation results for finite alphabet signaling indicate that the proposed precoder achieves significant performance gains over existing precoder designs.

Authors with CRIS profile

Robert Schober Lehrstuhl für Digitale Übertragung

Involved external institutions

Missouri University of Science and Technology US United States (USA) (US) Shanghai Jiao Tong University / 上海交通大学 CN China (CN) National Sun Yat-sen University TW Taiwan (TW) Southeast University / 东南大学 CN China (CN)

How to cite

APA:

Wu, Y., Wen, C.-K., Xiao, C., Gao, X., & Schober, R. (2015). Linear Precoding for the MIMO Multiple Access Channel With Finite Alphabet Inputs and Statistical CSI. IEEE Transactions on Wireless Communications, 14(2), 983 - 997. https://doi.org/10.1109/TWC.2014.2363105

MLA:

Wu, Yongpeng, et al. "Linear Precoding for the MIMO Multiple Access Channel With Finite Alphabet Inputs and Statistical CSI." IEEE Transactions on Wireless Communications 14.2 (2015): 983 - 997.

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