Quasi-ML detectors with soft output and low complexity for PSK modulated MIMO channels

Baldur Steingrimsson; Zhi Quan Luo; Kon Max Wong

doi:10.1109/SPAWC.2003.1318996

Quasi-ML detectors with soft output and low complexity for PSK modulated MIMO channels

Baldur Steingrimsson, Zhi Quan Luo, Kon Max Wong

Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

5 Scopus citations

Abstract

We propose a quasi-mjiximum-likelihood (quasi-ML) detection scheme with soft output and low decoding complexity for multiple antenna wireless channels modulated with phase-shift keying (PSK). These detectors, which we refer to as quasi-ML PSK decoders, deploy a nonlinear programming relaxation and are able to achieve the performance of exact ML detection in a wide variety of coded or uncoded and PSK modulated multiple-antenna channels. Yet, the decoding complexity of the soft quasi-ML PSK decoders is much less than of ML detectors using exhaustive search. We also demonstrate that the quasi-ML PSK decoders possess favorable complexity properties compared to the existing sphere decoders.

Original language	English (US)
Title of host publication	2003 4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	427-431
Number of pages	5
ISBN (Electronic)	078037858X
DOIs	https://doi.org/10.1109/SPAWC.2003.1318996
State	Published - 2004
Event	4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003 - Rome, Italy Duration: Jun 15 2003 → Jun 18 2003

Publication series

Name	IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
Volume	2004-January

Other

Other	4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003
Country/Territory	Italy
City	Rome
Period	6/15/03 → 6/18/03

Keywords

Low-rank relaxation
Nonlinear programming relaxation
Quasi-ML detection
Soft channel decoding

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10.1109/SPAWC.2003.1318996

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Steingrimsson, B., Luo, Z. Q., & Wong, K. M. (2004). Quasi-ML detectors with soft output and low complexity for PSK modulated MIMO channels. In 2003 4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003 (pp. 427-431). Article 1318996 (IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC; Vol. 2004-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/SPAWC.2003.1318996

Quasi-ML detectors with soft output and low complexity for PSK modulated MIMO channels. / Steingrimsson, Baldur; Luo, Zhi Quan; Wong, Kon Max.
2003 4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003. Institute of Electrical and Electronics Engineers Inc., 2004. p. 427-431 1318996 (IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC; Vol. 2004-January).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Steingrimsson, B, Luo, ZQ & Wong, KM 2004, Quasi-ML detectors with soft output and low complexity for PSK modulated MIMO channels. in 2003 4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003., 1318996, IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC, vol. 2004-January, Institute of Electrical and Electronics Engineers Inc., pp. 427-431, 4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003, Rome, Italy, 6/15/03. https://doi.org/10.1109/SPAWC.2003.1318996

Steingrimsson B, Luo ZQ, Wong KM. Quasi-ML detectors with soft output and low complexity for PSK modulated MIMO channels. In 2003 4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003. Institute of Electrical and Electronics Engineers Inc. 2004. p. 427-431. 1318996. (IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC). doi: 10.1109/SPAWC.2003.1318996

Steingrimsson, Baldur ; Luo, Zhi Quan ; Wong, Kon Max. / Quasi-ML detectors with soft output and low complexity for PSK modulated MIMO channels. 2003 4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003. Institute of Electrical and Electronics Engineers Inc., 2004. pp. 427-431 (IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC).

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Quasi-ML detectors with soft output and low complexity for PSK modulated MIMO channels

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