Cdma Communication System Pseudo-random Sequence And Its System Applications

This thesis is focoused on the PN sequence of Direct Spread CDMA communication system, including it's generation and properties analyzing. At first, this thesis expounds linear-shift-register sequence and chaotic sequence, and calculates the value of their main properties. Then, an improved method of generating chaotic sequence and the iden of serial sequence are talked. Based on all of these talked above a new method of generating chaotic sequence is presented, and it's properties is calculated. At last, this thesis use MonteCarlo simulation method in the given model of Direct Spread CDMA system to calculate the error rate of system which use the every mentioned PN sequences one by one.The simulation tool is Matlab. Additionally, this thesis also analyzes the factors which can influence the properties of chaotic sequence and points out the merits of the new presented chaotic sequence.