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Signal detection for orthogonal space-time block coding over time-selective fading channels: the H(i) systems

Zheng, F.-C. and Burr, A.G. (2006) Signal detection for orthogonal space-time block coding over time-selective fading channels: the H(i) systems. IEEE Transactions on Wireless Communications, 5 (1). pp. 40-46. ISSN 1536-1276

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To link to this item DOI: 10.1109/TWC.2006.1576524

Abstract/Summary

One major assumption in all orthogonal space-time block coding (O-STBC) schemes is that the channel remains static over the length of the code word. However, time-selective fading channels do exist, and in such case conventional O-STBC detectors can suffer from a large error floor in the high signal-to-noise ratio (SNR) cases. As a sequel to the authors' previous papers on this subject, this paper aims to eliminate the error floor of the H(i)-coded O-STBC system (i = 3 and 4) by employing the techniques of: 1) zero forcing (ZF) and 2) parallel interference cancellation (PIC). It is. shown that for an H(i)-coded system the PIC is a much better choice than the ZF in terms of both performance and computational complexity. Compared with the, conventional H(i) detector, the PIC detector incurs a moderately higher computational complexity, but this can well be justified by the enormous improvement.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Science
ID Code:18695
Uncontrolled Keywords:computational complexity, orthogonal space-time block coding, parallel interference cancellation, signal detection, signal-to-noise ratio, time-selective fading channels, zero forcing techniques, H(i) systems
Publisher:IEEE Communications Society

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