Blind decoders for linear dispersion codes in downlink DS-CDMA systems

Author

Liu, Jianhan ; Høst-Madsen, Anders

Author_Institution

Dept. of Electr. Eng., Hawaii Univ., Honolulu, HI, USA

Volume

6

Issue

7

fYear

2002

fDate

7/1/2002 12:00:00 AM

Firstpage

285

Lastpage

287

Abstract

Among many proposed space-time codes, the linear dispersion (LD) space-time codes possess many coding advantages and retain a simple decoding at the same time. An LD decoder combined with a blind subspace-based multiuser detector (MUD) is studied in the downlink of a DS-CDMA system. To further improve the performance, a subspace-based sphere decoding algorithm is proposed. Finally, a decimation-combining processing is applied to the proposed subspace-based blind decoders to reduce the complexity with only slight performance loss.

Keywords

block codes; code division multiple access; decoding; land mobile radio; multiuser channels; radio links; signal detection; spread spectrum communication; blind decoders; blind subspace-based multiuser detector; complexity reduction; decimation-combining processing; downlink DS-CDMA systems; linear dispersion codes; linear dispersion decoder; orthogonal space-time block codes; space-time codes; subspace-based sphere decoding algorithm; Block codes; Decoding; Detectors; Downlink; Multiaccess communication; Multiple access interference; Multiuser detection; Receiving antennas; Space time codes; Transmitting antennas;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2002.801323

Filename

1018752