Title :
Chaotic complex spreading sequences with multiple access performance better than purely random sequences
Author :
Cong, Ling ; Xiaofu, Wu ; Songgen, Sun
Author_Institution :
Nanjing Inst. of Commun. Eng., China
Abstract :
The paper presents a theoretic analysis on a performance index of the previously proposed chaotic complex spreading sequences, which characterizes the multiple access interference introduced by cross-correlation of a sequence set in asynchronous DS/CDMA systems. Based on this analysis it is possible to design chaotic spreading sequences outperforming ideal random sequences. Numerical results on biphase and quadriphase chaotic sequences are given
Keywords :
chaos; code division multiple access; correlation methods; phase shift keying; radiofrequency interference; sequences; spread spectrum communication; asynchronous DS/CDMA systems; biphase chaotic sequence; chaotic complex spreading sequences; cross-correlation; multiple access interference; multiple access performance; performance index; purely random sequences; quadriphase chaotic sequence; Chaos; Chaotic communication; Communication systems; Multiaccess communication; Multiple access interference; Performance analysis; Random sequences; Signal to noise ratio; Spread spectrum communication; Sun;
Conference_Titel :
Communication Technology Proceedings, 1998. ICCT '98. 1998 International Conference on
Conference_Location :
Beijing
Print_ISBN :
7-80090-827-5
DOI :
10.1109/ICCT.1998.741436
