Block phase-precoding for blind multiuser detection of BPSK/DS-CDMA signals

Author

Al-Bayati, A.K.S. ; Prakriya, Shankar ; Prasad, Surendra

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol., New Delhi, India

Volume

52

Issue

7

fYear

2004

fDate

7/1/2004 12:00:00 AM

Firstpage

1043

Lastpage

1046

Abstract

A new approach for blind multiuser detection of binary phase-shift keying/direct-sequence code-division multiple-access signals is proposed, based on precoding the phase of the transmitted data uniquely for each user, over a block of data. This would enable separation and detection of a desired user´s signal in an unknown multipath channel without channel estimation. The method does not involve any sacrifice in data rate or system bandwidth. The proposed method exhibits good performance, compared with some existing methods.

Keywords

blind source separation; code division multiple access; multipath channels; multiuser detection; phase coding; phase shift keying; spread spectrum communication; BPSK signals; DS-CDMA signals; binary phase-shift keying; blind multiuser detection; block phase-precoding; direct-sequence code division multiple access signals; multipath channels; search-track procedure; Bandwidth; Binary phase shift keying; Channel estimation; Detectors; Direct-sequence code-division multiple access; Multiaccess communication; Multipath channels; Multiuser detection; Phase detection; Phase shift keying; BPSK; Binary phase-shift keying; DS-CDMA; MU; blind detection; detection; direct-sequence code-division multiple access; multipath channels; multiuser; phase precoding;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.2004.831355

Filename

1315900