A robust non-orthogonal space-time block code for four transmit antennas

Zheng, F.-C. and Burr, A.G. (2003) A robust non-orthogonal space-time block code for four transmit antennas. In: Proceedings of the 57th IEEE semiannual vehicular technology conference. IEEE Vehicular Technology Conferences, 1 (57). IEEE Press, pp. 301-305. ISBN 0780377575 doi: 10.1109/VETECS.2003.1207551

Abstract/Summary

Several non-orthogonal space-time block coding (NO-STBC) schemes have recently been proposed to achieve full rate transmission. Some of these schemes, however, suffer from weak robustness: their channel matrices will become ill conditioned in the case of highly correlated channels (HCC). To address this issue, this paper derives a family of robust NO-STBC schemes for four Tx antennas based on the worst case of HCC. These codes turned out to be a superset of Jafarkhani's quasi-orthogonal STBC codes. A computationally affordable linear decoder is also proposed. Although these codes achieve a similar performance to the non-robust schemes under normal channel conditions, they offer a strong robustness against HCC (although possibly yielding a poorer performance). Finally, computer simulations are presented to verify the algorithm design.

Item Type	Book or Report Section
URI	https://reading-clone.eprints-hosting.org/id/eprint/18739
Item Type	Book or Report Section
Refereed	Yes
Divisions	Science
Uncontrolled Keywords	Jafarkhani quasi-orthogonal codes, channel matrices, full rate transmission, highly correlated channels, linear decoder, robust nonorthogonal space-time block code, transmit antennas
Publisher	IEEE Press
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