Robust Relay Precoder Design for MIMO-Relay Networks

Abstract—In this paper, we consider a robust design of MIMOrelay precoder and receive filter for the destination nodes in a non-regenerative multiple-input multiple-output (MIMO) relay network. The network consists of multiple source-destination node pairs assisted by a single MIMO-relay node. The source and destination nodes are single antenna nodes, whereas the MIMOrelay node has multiple transmit and multiple receive antennas. The channel state information (CSI) available at the MIMOrelay node for precoding purpose is assumed to be imperfect. We assume that the norms of errors in CSI are upper-bounded, and the MIMO-relay node knows these bounds. We consider the robust design of the MIMO-relay precoder and receive filter based on the minimization of the total MIMO-relay transmit power with constraints on the mean square error (MSE) at the destination nodes. We show that this design problem can be solved by solving an alternating sequence of minimization and worst-case analysis pr...

• Type: Journal
• Year: 2010
• Where: WCNC
• Authors: P. Ubaidulla, Ananthanarayanan Chockalingam
• Keywords: Computer Networks, MIMO-relay Node, Node, WCNC 2010, Worst-case Analysis Problem