On the influence of substream ordering for MIMO decision-feedback detectors with higher order modulation

Author

Elders-Boll, Harald ; Alirezaei, Gholamreza

Author_Institution

Synopsys, Wireless & Broadband Commun., Aachen, Germany

Volume

2

fYear

2002

fDate

27-30 Oct. 2002

Firstpage

691

Abstract

The performance of different multiuser detectors with soft decision-feedback is evaluated in a transmission system with multiple transmit and receive antennas (MIMO) and higher order modulation. Specifically, the influence of the detection order on the detector performance is investigated. It is found that the unbiased MMSE soft decision-feedback detector with a simple pre-estimation ordering algorithm, that takes the crosscorrelation between substreams into account, practically achieves the same performance as the more complex V-BLAST detector.

Keywords

MIMO systems; interference suppression; least mean squares methods; mobile radio; multiuser detection; quadrature amplitude modulation; quadrature phase shift keying; MIMO system; MMSE; QAM; QPSK; V-BLAST detector; higher order modulation; interference cancellation; mobile handset; multiuser detectors; soft decision-feedback detectors; substream ordering; Broadband communication; Detectors; Feedback; Interference cancellation; MIMO; Multiuser detection; Quadrature phase shift keying; Receiving antennas; Transmitting antennas; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on

ISSN

1347-6890

Print_ISBN

0-7803-7442-8

Type

conf

DOI

10.1109/WPMC.2002.1088263

Filename

1088263