Analysis of new modulated sequence set with zero correlation zone

Author

Hu, Fei ; Wen, Hong ; Jin, Fan

Author_Institution

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

Volume

2

fYear

2003

fDate

14-17 Dec. 2003

Firstpage

1565

Abstract

For approximately synchronized CDMA (AS-CDMA) systems, zero correlation zone (ZCZ) sequences, whose periodic auto/cross-correlation functions have zero correlation zone at the both side of the zero-shift, are used as signature sequences to eliminate the co-channel interferences and to decrease the multi-path interferences. 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; CDMA; cochannel interferences; generalized Chirp like sequences; modulated sequence set; multipath interferences; periodic auto/cross-correlation functions; polyphase sequences; signature sequences; zero correlation zone; Autocorrelation; Chirp modulation; Control systems; Interference elimination; Multiaccess communication; Multiple access interference; Signal design;

fLanguage

English

Publisher

ieee

Conference_Titel

Neural Networks and Signal Processing, 2003. Proceedings of the 2003 International Conference on

Conference_Location

Nanjing

Print_ISBN

0-7803-7702-8

Type

conf

DOI

10.1109/ICNNSP.2003.1281178

Filename

1281178