Precoding design in MIMO multiple-access cellular relay systems with partial CSI.
This paper studies the transmit precoding problem for multiple-input multiple-output (MIMO) multiple-access (MA) cellular systems employing cooperative base stations (BSs) and amplify-and-forward (AF) relaying where the transmit antennas at the user equipments (UEs), relay terminals (RTs), and BSs are all correlated. It is assumed that the BSs have perfect channel state information (CSI) while the UEs and RTs only have the channel covariance information (CCI). We derive the asymptotic sum-rate expressions for the MIMO-MA cellular systems under any given signaling input distributions in the large-system limit. Using the asymptotic results, we propose an efficient algorithm to determine the asymptotic optimum transmit matrices for the UEs and RTs that can maximize the sum-rate of the MIMO-MA cellular systems if CCI is exploited at the UEs and RTs. ©2010 IEEE.
|Title:||Precoding design in MIMO multiple-access cellular relay systems with partial CSI|
|UCL classification:||UCL > School of BEAMS > Faculty of Engineering Science
UCL > School of BEAMS > Faculty of Engineering Science > Electronic and Electrical Engineering
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