直接序列扩频超宽带信号分析  

DS-UWB signal analysis

作　　者：王晓宇[1] 王立东[1] 吴庆宏[1] 

机构地区：[1]鞍山科技大学电子与信息工程学院,辽宁鞍山114044

出　　处：《鞍山科技大学学报》2006年第1期34-37,共4页Journal of Anshan University of Science and Technology

摘　　要：介绍了UWB通信的定义,分析了作为UWB信号载体的高斯信号的时频域特性,说明该信号适合于UWB通信系统。推导并分析了DS-UWB信号的功率谱,指出DS-UWB信号的功率谱是由发送脉冲信号的频谱和编码频谱共同决定。并且用计算机进行仿真,证实了伪随机码周期越长,频谱越平坦。Main characters of ultra wideband （UWB） communication were introduced. Time domain and frequency domain characters of Gaussian signals for UWB were analyzed, which showed the signal was suitable for UWB communication system. Power spectral density deduction and analysis were made to show that the power spectrum of DS-UWB signal was governed by pulse spectrum and code spectrum. Analysis and computer simulations reveal that the longer the period of pseudorandom code,the more flat the spectrum is.

关 键 词：超宽带 功率谱密度 直接序列扩频 

分 类 号：TN914[电子电信—通信与信息系统]