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Published March 2006 | public
Journal Article Open

Optimal low-complexity detection for space division multiple access wireless systems

Abstract

A symbol detector for wireless systems using space division multiple access (SDMA) and orthogonal frequency division multiplexing (OFDM) is derived. The detector uses a sphere decoder (SD) and has much less computational complexity than the naive maximum likelihood (ML) detector. We also show how to detect non-constant modulus signals with constrained least squares (CLS) receiver, which is designed for constant modulus (unitary) signals. The new detector outperforms existing suboptimal detectors for both uncoded and coded systems.

Additional Information

© Copyright 2006 IEEE. Reprinted with permission. Manuscript received August 25, 2005. The associate editor coordinating the review of this letter and approving it for publication was Dr. Murat Uysal. This work has been supported in part by the Natural Sciences and Engineering Research Council of Canada, Informatics Circle of Research Excellence and Alberta Ingenuity Fund.

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August 22, 2023
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