Unitary space-time constellations based on quasi-orthogonal sequences

Authors:
Jeongchang Kim;Kyungwhoon Cheun;Soongyoon Choi
Affiliations:
Electronics and Telecommunications Research Institute, Republic of Korea;Division of Electrical and Computer Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea;Samsung Electronics Co., Ltd., Republic of Korea and Division of Electrical and Computer Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea
Venue:
IEEE Transactions on Communications
Year:
2010

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Abstract

In this paper, we propose a novel class of unitary space-time constellations based on quaternary quasi-orthogonal sequences (QOSs), minimizing the maximum correlation between the signal matrices. The proposed design, owing to the underlying algebraic structure of the QOSs, allows for an efficient decoder structure while offering performance virtually identical to the unitary space-time constellation design by Hochwald et al.