The improved piecewise linear chaotic mapping is presented to generate the spreading codes for DS-CDMA system in this paper.The spreading properties and the effects of two quantification functions on the spreading properties are analyzed.The simulation results show that the sequences have long period
good balance
δ
-like auto-correlation and very small cross-correlation and great linear complexity under the condition of the proper initial values and are suitable to be used as the spreading codes for DS-CDMA.