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Transmit precoding for MIMO relay systems with partial CSI under correlated fading

Wen, CK; Wong, KK; Ng, CTK; (2009) Transmit precoding for MIMO relay systems with partial CSI under correlated fading. In: 2009 International Conference on Wireless Communications & Signal Processing. (pp. ? - ?). IEEE: Piscataway, US.

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Abstract

In this paper, we study the transmit precoding problem for multiple-input multiple-output (MIMO) two-hop amplify-and-forward (AF) relay systems, where the source terminal (ST), relay terminal (RT), and destination terminal (DT) are equipped with multiple correlated antennas and there exists a direct link between ST and DT. It is assumed that DT has perfect channel state information (CSI) while ST and RT only have the channel covariance information (CCI). We derive the asymptotic mutual information (MI) expressions for the MIMO-AF relay channel for any given signaling input distributions in the large-system limit. Using the asymptotic results, we design the optimal source covariance matrix and the relay precoding matrix that maximizes the asymptotic MI of the system if CCI is exploited.

Type:Proceedings paper
Title:Transmit precoding for MIMO relay systems with partial CSI under correlated fading
ISBN-13:9781424448562
DOI:10.1109/WCSP.2009.5371698
Publisher version:http://dx.doi.org/10.1109/WCSP.2009.5371698
Additional information:2009 International Conference on Wireless Communications & Signal Processing took place in Nanjing, China between 13 to 15 November 2009. Paper from the Special Session on Cooperative and Relay Communications
UCL classification:UCL > School of BEAMS > Faculty of Engineering Science > Electronic and Electrical Engineering

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