Chaotic Complex Spreading Sequences with Multiple Acess Performance Better than Purely Random Sequences

摘要

The paper presents a theoretic analysis on a performance index of the recently proposed chaotic complex spreading sequences, which characterizes the multiple access inter-ference introduced by cross-correlation of a sequence set in asynchronous DS/CDMA systems. Based on this analysis it is possible to desing chaotic spreading sequences outperforming ideal random sequences. Numerical resutls on biphase and quadriphase chaotic sequences are given.