Multiple chip-rate DS/CDMA system and its spreading code dependent performance analysis

Author

Chen, X.H. ; Lang, T. ; Oksman, J.

Author_Institution

Dept. of Electr. Eng., Nat. Chung-Hsing Univ., Taichung, Taiwan

Volume

145

Issue

5

fYear

1998

fDate

10/1/1998 12:00:00 AM

Firstpage

371

Lastpage

377

Abstract

The authors study a multiple chip-rate DS/CDMA system and its spreading code dependent performance. The multiple chip-rate technique is useful in some CDMA applications needing extra divisions among users in addition to code division to support variable data rate applications, such as multimedia systems. The study is applicable to both synchronous and asynchronous multiple chip-rate CDMA systems. A co-channel interference model based on correlation statistics for deriving bit error rate of a dual-chip-rate CDMA system is introduced considering various spreading codes, such as m-sequence, Gold, Gold-like, Kasami and Walsh codes. The results show that Gold code families are most suitable for the use in the dual-chip-rate CDMA system

Keywords

cellular radio; cochannel interference; code division multiple access; correlation methods; error statistics; m-sequences; packet radio networks; pseudonoise codes; spread spectrum communication; DS-CDMA system; Gold code families; Kasami codes; PN sequences; Walsh codes; asynchronous systems; bit error rate; cellular radio; co-channel interference model; correlation statistics; dual-chip-rate CDMA system; m-sequences; multiple chip-rate technique; performance analysis; spreading codes; synchronous systems; variable data rate applications;

fLanguage

English

Journal_Title

Communications, IEE Proceedings-

Publisher

iet

ISSN

1350-2425

Type

jour

DOI

10.1049/ip-com:19982289

Filename

739700