Analysis of new modulated sequence set with zero correlation zone

Author

Hu, Fei ; Jin, Fan

Author_Institution

Sch. of Comput. & Commun. Eng., Southwest Jiaotong Univ., Sichuan, China

fYear

2003

fDate

1-3 Oct. 2003

Firstpage

127

Lastpage

130

Abstract

For approximately synchronized CDMA (AS-CDMA) systems, zero correlation zone (ZCZ) sequences, whose periodic auto/cross-correlation functions have zero correlation zone at both sides of the zero-shift, are used as signature sequences to eliminate the co-channel interference and to decrease the multipath interference. In this paper, based on the generalized chirp-like sequences, a new family of polyphase sequences is presented and the correlation properties are investigated. The results show that, among the proposed sequences, there are subsets of ZCZ sequences which can be used for AS-CDMA systems.

Keywords

cochannel interference; code division multiple access; correlation methods; interference suppression; sequences; approximately synchronized CDMA system; co-channel interference elimination; code division multiple access; correlation property; cross-correlation function; generalized chirp-like sequence; modulated sequence set; multipath interference; periodic auto-correlation function; polyphase sequence; signature sequence; zero correlation zone; Autocorrelation; Chirp modulation; Control systems; Electromagnetics; Interference elimination; Multiaccess communication; Multiple access interference; Signal design; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Electromagnetics and Communications, 2003. ICECom 2003. 17th International Conference on

Print_ISBN

953-6037-39-4

Type

conf

DOI

10.1109/ICECOM.2003.1290971

Filename

1290971