新的扩频通信调制方法

Novel method of spread spectrum communication

针对传统扩频调制方法频谱效率低的问题,提出了一种新的扩频通信方法——时移位置调制方法,该方法利用伪随机序列良好的自互相关特性,通过扩频调制码元之间的相对位置加载信息,建立了信息传输速率与扩频码或扩频调制带宽之间的联系。理论分析和仿真结果表明,这种调制方法可以大大提高扩频系统的频带利用率,并可有效对抗宽带、窄带以及扩频干扰,为扩频通信技术的研究提供了一种新方法。

As the bandwidth efficiency of traditional spread spectrum modulation is quite low, a novel spread spectrum communication method, which uses the relative position of the spread spectrum modulation symbol to carry information was presented, and the method establishes the relationship between the information transfer rate and the spreading code or the transmission bandwidth. Theoretical analysis and simulation results show that the modulation method can not only greatly improve the bandwidth efficiency of the spread spectrum system, but also effectively combat broadband, narrow- band or other spread spectrum interference. This method provides some novel ideas for the future research of spread soectrum communications.