基于SystemView的直序扩频调制解调系统仿真研究

The Research of Modulation and Demodulation of Direct Sequence Spread Spectrum Based on the Systemview

直接序列扩频技术适合于码分多址蜂窝通信系统,为了对直扩调制解调系统进行原理验证和性能分析,本文基于Systemview平台下,利用其图形模块构建DS-SS的QPSK调制解调系统对其进行仿真,并用分析窗和信号计算器进行了分析,结果显示,该系统具有良好的抗多径干扰能力。

The direct sequence spread spectrum is adapted to the CDMA communication system. In order to validate the principle and analyze the performance of the modulation and demodulation, this paper utilize the module of the Systemview to design and analyze a modulation and demodulation system of QPSK. The result shows the system has the good ability to combat muhipath interference.