基于线性调频脉冲(Chirp)信号良好的自相关性以及匹配滤波后尖锐的时域特性,将线性调频脉冲扩频技术用于高速的超宽带无线通信,设计Chirp-DM调制的超宽带通信系统。DM方式传输速率较快,而且误码率较低,但是实现复杂。首先对DM调制方式给出理论分析,然后再进行性能仿真。 Based on the good autocorrelation of chirp signal and the sharp time-domain characteristic after matched filtering, chirp-DM modulated UWB communication system is designed by using chirp spread spectrum technology for high-speed ultra-wideband wireless communication. DM mode faster transfer rate, and lower bit error rate, but the realization of complex. First of all, a theoretical analysis of the DM modulation mode is given, and then the performance simulation is performed.