Fading-Resilient Super-Orthogonal Space-Time Signal Sets: Can Good Constellations Survive in Fading?

Details Fading-Resilient Super-Orthogonal Space-Time Signal Sets: Can Good Constellations Survive in Fading? Fading-Resilient Super-Orthogonal Space-Time Signal Sets: Can Good Constellations Survive in Fading?

2005-05-18

arxiv.org/abs/cs/0505049v1

IEEE Transactions on Information Theory, Vol. 53, No. 9, SEPTEMBER 2007, pp. 3219-3225

Computer Science

Information Theory

10 pages, 0 figures, 2 tables, uses IEEEtran.cls, submitted to IEEE Transactions on Information Theory

Scientific paper

10.1109/TIT.2007.903148

In this correspondence, first-tier indirect (direct) discernible constellation expansions are defined for generalized orthogonal designs. The expanded signal constellation, leading to so-called super-orthogonal codes, allows the achievement of coding gains in addition to diversity gains enabled by orthogonal designs. Conditions that allow the shape of an expanded multidimensional constellation to be preserved at the channel output, on an instantaneous basis, are derived. It is further shown that, for such constellations, the channel alters neither the relative distances nor the angles between signal points in the expanded signal constellation.

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