Space-Time Processing for Cooperative Relay Networks
AuthorsIngmar Hammerström, Marc Kuhn, Boris Rankov, and Armin Wittneben
ReferenceIEEE Vehicular Technology Conference, VTC Fall 2003, Oct. 2003
AbstractFuture wireless communication systems have to support high data rates. The capacity of these systems can be increased dramatically by using multiple antennas at the transmitter and the receiver working in a rich scattering environment. But in a line-of-sight environment the MIMO channel matrix is rank deficient and therefore the capacity increase diminishes. Using cooperative amplify & forward relay nodes it is possible to overcome this problem by increasing the rank of the MIMO channel. A special signaling scheme is necessary to achieve this increase of channel rank. Therefore the use of existing spacetime algorithms is not straightforward. In this paper we show that a recently proposed class of linear space-time block codes exploits the offered capacity and achieves good performance results. The codes are able to use jointly transmit diversity in combination with spatial multiplexing with reasonable and scalable computational complexity.
KeywordsSpace-Time Coding, MIMO, Cooperative Signaling, Relay Networks, Capacity, Tradeoff Transmit Diversity vs. Spatial Multiplexing
Download this document:
Copyright Notice: © 2003 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.