超宽带通信调制方式隐蔽性研究  

Research of TH-PPM Based on the Pseudo Random Control to Pulse Amplitude in the UWB Communication

作　　者：许哲[1] 王永生[1] 张会生[1] 

机构地区：[1]西北工业大学电子信息学院,陕西西安710072

出　　处：《计算机仿真》2010年第2期153-156,共4页Computer Simulation

摘　　要：在军事应用中超宽带调制信号的隐蔽性是设计者需要关注的重要指标之一,为解决上述问题,改善发射信号的频谱,提出一种将脉幅调制(PAM)与脉位调制(PPM)结合的调制方式设计超宽带通信信号,并进行系统仿真。仿真结果表明,在系统复杂度增加很小的情况下,新调制方式的信号功率谱具有更加类似于白噪声的特性,谱密度更低,从而提高信号的隐蔽性,且系统容量与PAM系统或PPM系统相比有一定提升。One of the most important aspects of designing the modulating signal in the UWB system is the hidden character. To solve the problem metioned above, this paper uses a method that combines the PAM and PPM modulation to design the UWB communication signal, and simulates the system designed. According to the simulation resultes, in the condition of adding a little complexity, to the system the emission signal under the new modulation method is more similar to the white noise than that under the traditional methods, and the PSD is lower, so that increases the hidden character of the signal, and it brings a little benefits to the system capacity too.

关 键 词：超宽带 脉位调制 脉幅调制 频域分析 

分 类 号：TN914.53[电子电信—通信与信息系统]