One- and Two-Way Decode-and-Forward Relaying for Wireless Multiuser MIMO Networks
AuthorsCelal Esli and Armin Wittneben
ReferenceIEEE Global Communications Conference (IEEE Globecom 08), Nov. 2008.
AbstractIn this paper, we propose multiuser multiple-input multiple-ouput (MIMO) one- and two-way relaying protocols. Several wireless MIMO node pairs are establishing either unidirectional or bidirectional transmission links via a single decodeand- forward MIMO relay without causing interference to each other. For both half-duplex two-phase relaying protocols, the relay separates messages of different node pairs spatially by using zero-forcing based methods, whereas, in order to cancel the interference within the bidirectional links, XOR precoding followed by self-interference cancellation is employed. Both sum rate and maxmin fairness optimizations, as well as quality-ofservice assurance, are considered for the design of the precoders at the relay. The corresponding optimization algorithms for both one- and two-way relaying have been developed using semidefinite programming, which consider the intersection of multiple access and broadcast phases rate regions.
Download this document:
Copyright Notice: © 2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.