Space-time OFDM with adaptive beamforming: Performance in spatially correlated channels

Lin, K, Hussain, Z and Harris, R 2004, 'Space-time OFDM with adaptive beamforming: Performance in spatially correlated channels', in E. Leelarasmee (ed.) IEEE TENCON 2004, Chiang Mai, Thailand, 21-24 November 2004, pp. 617-620.

Document type: Conference Paper
Collection: Conference Papers

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Title Space-time OFDM with adaptive beamforming: Performance in spatially correlated channels
Author(s) Lin, K
Hussain, Z
Harris, R
Year 2004
Conference name Analog and Digital Techniques in Electrical Engineering
Conference location Chiang Mai, Thailand
Conference dates 21-24 November 2004
Proceedings title IEEE TENCON 2004
Editor(s) E. Leelarasmee
Publisher IEEE
Place of publication New Jersey, USA
Start page 617
End page 620
Total pages 4
Abstract Space-time block coding (STBC) has proved to be an effective means of exploring diversity branches and improving system performance. In a previous work we proposed an extension to that where the STBC was combined with adaptive eigenbeamforming, an approach that takes an advantage of spatial channel correlation and can provide further improvement for the overall system performance. In this paper, we investigate this new transmission structure for broadband orthogonal frequency division multiplexing (OFDM) systems in frequency-selective channels. Numerical analysis showed that systems employing this scheme would not undergo any diversity losses as it maintains the maximum achievable diversity advantage of space-time (ST) codes in realistic channel conditions. Simulation results showed that the proposed structure has a significant improvement in bit/symbol error rate performance in a spatially correlated channel over systems that utilize only space-time coding.
Subjects Broadband and Modem Technology
DOI - identifier 10.1109/TENCON.2004.1414671
Copyright notice © 2004 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.
ISBN 0-7803-8560-8
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