DS-CDMA通信系统中混沌扩频码的研究

A Study of the Chaotic Spread Spectrum Codes in the DS-CDMA Communication System

采用了一种由迭代和L比特量化生成数字化Logistic、Tent扩频码的方法,研究混沌扩频码在异步CDMA通信系统中的多址能力和抗噪声干扰能力,并把所产生的混沌扩频码与传统的Gold码应用于通信系统中进行性能比较和分析.仿真结果表明,混沌扩频码应用于异步CDMA通信系统中具有良好的误码性能和抗多址干扰能力.

In order to study the multi-access and anti-noise performance of the chaotic spread spectrum codes in the asynchronous CDMA system, an iteration and L bit quantized method was adopted here to generate the digital Logistic and Tent spread codes, and the generated codes are analyzed and compared with the traditional Gold codes. Simulation shows that chaotic spread codes have a good bit error performance and multi-access interference suppression performance in the asynchronous CDMA system.