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Closed-loop quasi-orthogonal STBCs and their performance in multipath fading environments and when combined with turbo codes

Toker, C, Lambotharan, S and Chambers, JA (2004) Closed-loop quasi-orthogonal STBCs and their performance in multipath fading environments and when combined with turbo codes IEEE Transactions on Wireless Communications, 3 (6). pp. 1890-1896.

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Abstract

Quasi-orthogonal space-time block codes (QO-STBCs) achieve full code rate at the expense of loss in diversity gain. In this paper, we propose two feedback methods for QO-STBCs to achieve full diversity and full code rate. In the first method, signals radiated from various antennas are rotated by phasors according to feedback from the receiver, whereas the second method is based upon antenna weighting/selection. For high to moderate feedback error rates, it is demonstrated that the proposed methods outperform the quantized transmit beamformer. The performance improvement is also investigated for these closed-loop methods when the transmitted signal is error control coded.

Item Type: Article
Authors :
NameEmailORCID
Toker, CUNSPECIFIEDUNSPECIFIED
Lambotharan, SUNSPECIFIEDUNSPECIFIED
Chambers, JAj.a.chambers@surrey.ac.ukUNSPECIFIED
Date : 1 November 2004
Identification Number : 10.1109/TWC.2004.837401
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:27
Last Modified : 17 May 2017 13:27
URI: http://epubs.surrey.ac.uk/id/eprint/839254

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