Full-diversity high-rate non-coherent unitary STBCs: new designs and performance

Dutta, Biswajit ; Chockalingam, A. (2009) Full-diversity high-rate non-coherent unitary STBCs: new designs and performance In: 2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications, 13-16 September 2009, Tokyo, Japan.

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Official URL: http://ieeexplore.ieee.org/document/5450188/

Related URL: http://dx.doi.org/10.1109/PIMRC.2009.5450188

Abstract

In this paper, we propose new non-coherent spacetime block code (STBC) designs, which achieve full transmit diversity as well as high rates. We first present a search procedure to generate full-diversity non-coherent unitary space-time codebooks for any number of transmit antennas (nt) and time slots (T ≥ 2nt), using radial coordinates of points lying on the surface of a sphere in RT-nt. The search method generates codebooks having a specified minimum chordal distance, which allows flexibility in achieving coding gain. Further, we propose another unitary design using circulant matrices for any nt, by restricting the search only to suitable constellation sets in R2 for the case of T = 2nt. For the latter design, we present two different optimizations; i) to maximize the minimum chordal distance, and ii) to maximize the expected chordal distance. The proposed designs use an analytical design criterion which guarantees full diversity. The proposed designs are shown to outperform Jing and Hassibi codes reported previously in the literature.

Item Type:Conference or Workshop Item (Paper)
Source:Copyright of this article belongs to Institute of Electrical and Electronics Engineers.
Keywords:Chordal Distance; Non-coherent Unitary STBCs; Full-diversity
ID Code:102289
Deposited On:26 Mar 2017 14:44
Last Modified:26 Mar 2017 14:44

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