UWB系统多址接入方法的比较研究

The Study and Comparison of Multiple Access of UWB System

研究UWB系统多址接入技术的主要目的是在尽量减少多址之间的干扰,降低接收机的复杂度,实现低功耗、低成本。从误码率理论分析、性能仿真和接收机结构等几个方面对混沌序列扩频与伪随机序列扩频、伪混沌跳时与传统跳时多址接入方式进行比较研究。结果表明,在系统误码率方面,伪随机序列扩频优于混沌序列扩频,传统跳时优于伪混沌跳时;在接收机复杂度方面,混沌序列扩频和传统跳时较好。

The study of multiple access technology mainly aims at reducing the complexity of receiver as to implement low power consumption and low cost, besides decreasing the multiple access interference as much as possible. In this paper, the multiple access performances of spread spectrum with chaotic sequence and that with pseudo - random sequence, pseudo - chaotic time hopping and conventional time hopping are compared, in terms of theoretical analysis of bit error rate, simulation results and the receiver. It is shown that, as the system bit error rate is concerned, pseudo- random sequence spread spectrum is better than that of chaotic sequence, and conventional time hopping is better than pseudo -chaotic time hopping, as the complexity of receiver is concerned, chaotic sequence spread spectrum and conventional time hopping are superior.