Title :
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
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;
Conference_Titel :
Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on
Print_ISBN :
0-7803-7442-8
DOI :
10.1109/WPMC.2002.1088263
