A simplified fixed-complexity sphere decoder for V-BLAST systems

Author

Xiong, Cong ; Zhang, Xin ; Wu, Kai ; Yang, Dacheng

Author_Institution

Wireless Theor. & Technol. Lab., Beijing Univ. of Posts & Telecommun., Beijing, China

Volume

13

Issue

8

fYear

2009

fDate

8/1/2009 12:00:00 AM

Firstpage

582

Lastpage

584

Abstract

A simplified fixed-complexity sphere decoder (SFSD) with much lower computational cost than that of the original fixed-complexity sphere decoder (FSD) has been developed for signal detection in Vertical Bell Laboratories layered space-time (V-BLAST) systems. Simulation results on a 16-QAM system with 8 transmit and 8 receive antennas show that the SFSD can attain the near-optimal performance with a cost that is about 37% of the counterpart of the original FSD.

Keywords

decoding; quadrature amplitude modulation; receiving antennas; signal detection; space-time codes; transmitting antennas; 16-QAM system; V-BLAST systems; Vertical Bell Laboratories layered space-time system; fixed-complexity sphere decoder; near-optimal performance; receive antennas; signal detection; transmit antennas; Computational efficiency; Computational modeling; Costs; Iron; Matrix decomposition; Maximum likelihood decoding; Maximum likelihood detection; Receiving antennas; Signal detection; Transmitting antennas; Sphere decoder (SD), vertical Bell Laboratories layered space-time (V-BLAST), fixed-complexity.;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2009.091039

Filename

5200892