Abstract
A generalized p-radii construction for space-time codes achieving the optimal rate-diversity tradeoff is presented in this paper. The new construction is obtained by extending Hammons' dyadic dual-radii construction to the cases when the size of the constellation A is a power of a prime p, p /spl ges/ 2. The resulting space-time code is optimal in terms of achieving the rate-diversity tradeoff and has an AM-PSK constellation with signal alphabets distributed over p-concentric circles in the complex plane, i.e., there are p radii. Finally, we present the generalized super-unified construction by generalizing the super-unified construction by Hammons (2004). The generalized results are readily to be extended to cater to the constructions of both optimal space-time block and trellis codes and even to the constructions of optimal codes over multiple-fading blocks.
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