Differential unitary space-time signal designs with improved performance using parametric equivalence

David B. Smith; Leif W. Hanlen

doi:10.1002/ett.1360

Differential unitary space-time signal designs with improved performance using parametric equivalence

David B. Smith, Leif W. Hanlen

Research output: Contribution to journal › Article › peer-review

Abstract

We present two unitary space-time signal designs for two or more transmit antennas. The first design is a reparametrisation of rotation matrices applied to diagonal matrices to form unitary space-time codes. The rotation matrices are applied as matrices similar to Alamouti-style block codes. The second design subsumes rotation matrices applied to diagonal matrices for two antennas. These designs are applied in a non-coherent/differential framework. Optimisation of constellations is performed using the union bound on block-error probability, for which a new exact closed-form expression is given. Both designs have superior block-error performance over previous designs, and have similar performance to each other.

Original language	English
Pages (from-to)	431-445
Number of pages	15
Journal	European Transactions on Telecommunications
Volume	20
Issue number	4
DOIs	https://doi.org/10.1002/ett.1360
Publication status	Published - Jun 2009

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Differential unitary space-time signal designs with improved performance using parametric equivalence

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