CDMA系统的扩址方案的研究

A Study on Address Expansion Scheme in CDMA System

地址码技术是码分多址(CDMA)扩频通信的关键技术之一。在CDMA系统中,为了容纳足够多的用户,地址码数量是主要矛盾。文中分析的CDMA系统的扩址方案是以m序列、Gold序列为基础,利用MATLAB软件对扩址方案中地址码的自相关、互相关进行仿真分析,从而确认扩址方案的可行性,这为解决移动通信中地址码数量的短缺问题提供了理论依据。

Address code technology is one of key technologies in the Code Division Multiple Access （CDMA） spread spectrum com- munication. In CDMA system, in order to accommodate enough users, the number of code is the, main contradiction. The CDMA system expansion address scheme which this paper analyzes is based on the m-sequence and Gold sequence. Finally the auto-corre- lation and cross-correlation of the address expansion scheme code are analysed with the MATLAB software in order to demonstrate the feasibility of expanding the address. These provide a theoretical basis for solving the problem of the number shortage of address code in the CDMA mobile communication systems.