A two-layer spreading code scheme for dual-rate DS-CDMA systems

Author

Yao, Yingwei ; Poor, H. Vincent

Author_Institution

Dept. of Electr. Eng., Princeton Univ., NJ, USA

Volume

51

Issue

6

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

873

Lastpage

879

Abstract

This letter considers multiuser detection in variable-spreading-length multi-rate direct-sequence code-division multiple-access systems. A two-layer spreading (TLS) code scheme is proposed which facilitates the low-complexity adaptive implementation of linear minimum mean-square error multiuser receivers in a dual-rate system. It is demonstrated via large system analysis and simulation that imposing a TLS structure does not incur loss in terms of the output signal-to-interference ratio performance.

Keywords

code division multiple access; mean square error methods; multiuser detection; spread spectrum communication; TLS structure; dual-rate DS-CDMA systems; linear minimum mean-square error; loss; low-complexity adaptive implementation; multiuser detection; output signal-to-interference ratio performance; two-layer spreading code scheme; variable-spreading-length systems; Adaptive control; Delay estimation; Interference cancellation; Multiaccess communication; Multiuser detection; Performance analysis; Performance loss; Programmable control; Signal analysis; Silicon carbide;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.2003.813266

Filename

1209284