2004•Journal of Changchun Post and Telecommunication InstituteRequires access

Generation of chaotic spread spectrum sequences and its application in CDMA system

YU Yin-hui, Yue Wang

Abstract

Chaotic spread spectrum sequences are created by iteration method based on Logistic-map. The sensitivity, ergodicuty, anti-interference and probability distribution density of the sequences are studied. MAI(Multiple Access Interference) of multiuser system in chaotic DS-CDMA is analyzed. Simulation results show that chaotic sequences have the properies of simple generation, rich code elements, ergodicuty and sensitivity compared with PN(Pseudo-random Number) sequences, It meets the demand of spread-spectrum sequence in the spread-spectrum communication system.

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Key concepts: Spread spectrum, Chaotic, Code division multiple access, Logistic map, Computer science, Interference (communication), Sequence (biology), Spectrum (functional analysis)