A robust non-orthogonal space-time block code for four transmit antennasZheng, 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 Full text not archived in this repository. It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing. To link to this item DOI: 10.1109/VETECS.2003.1207551 Abstract/SummarySeveral 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.
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