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Proceedings Paper

Minimum variance space-time CDMA receiver algorithms based on URV decomposition
Author(s): Munhyung Cho; Joohwan Chun; Soohong Kim
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Paper Abstract

A minimum variance space-time (MVST) receiver with an antenna array has recently been proposed as a relatively simple method for designing blind multiuser receivers for code division multiple access (CDMA) systems. For time-varying CDMA systems, it is necessary to update the response vector, which is used to construct the receiver algorithm, of the MV receiver for each symbol interval. In this paper, we propose a new MVST receiver whose the response vector is updated based on the rank-revealing URV-decomposition rather than the eigen decomposition or singular value decomposition (SVD) used in previous MVST receivers. We demonstrate its performance through simulation in varying the number of multipaths and the Rayleigh fading parameters. It is found that the URV-decomposition based MVST receiver is effective for the time-varying CDMA signal, and achieves considerable computational savings.

Paper Details

Date Published: 20 November 2001
PDF: 10 pages
Proc. SPIE 4474, Advanced Signal Processing Algorithms, Architectures, and Implementations XI, (20 November 2001); doi: 10.1117/12.448669
Show Author Affiliations
Munhyung Cho, Korea Advanced Institute of Science and Technology (South Korea)
Joohwan Chun, Korea Advanced Institute of Science and Technology (South Korea)
Soohong Kim, LG Innotek Co., Ltd. (South Korea)


Published in SPIE Proceedings Vol. 4474:
Advanced Signal Processing Algorithms, Architectures, and Implementations XI
Franklin T. Luk, Editor(s)

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