超宽带脉冲信号及对窄带通信系统的干扰分析  

UWB Pulse Signals and Their Interference on Narrowband Communication Systems

作　　者：赵静[1] 郑继禹[1] 林基明[1] 王玫[1] 

机构地区：[1]桂林电子工业学院通信与信息工程系,桂林541004

出　　处：《系统仿真学报》2004年第12期2872-2874,2879,共4页Journal of System Simulation

基　　金：广西自然科学青年基金 (0229031); 国家自然科学基金项目(60372037)。

摘　　要：超宽带通信的优良特性使其成为继CDMA与蓝牙技术之后倍受人们重视的通信技术,但是其极宽的频谱分布对常规通信系统的干扰也成为人们担忧的问题。首先对UWB通信常用的几种高斯型极窄脉冲进行了时域与频域的分析,尽管几种波形都有极宽的频谱,但是功率谱分布规律却不相同,对频域中业已存在的常规通信系统构成干扰的程度也不相同。通过仿真分析表明,适当地选择极窄脉冲波形及相关信号参数可有效地降低这种干扰。Ultra Wideband (UWB) communication technology has received increasing interest for high-rate wireless network. UWB pulse signals and their interference on conventional narrowband communication systems are focused. Several ultra-short pulse waveforms, based on the Gaussian pulse, are analyzed both in time domain and in frequency domain. Performance deterioration of narrowband system caused by various in-band UWB signal interference is different. Proper selection of pulse waveform and other related parameters allow one to minimize the interference. The results verified by performance simulations of QPSK modulated system in an additive white Gaussian noise (AWGN) channel with in-band interference caused by time-hopping (TH) UWB signals.

关 键 词：超宽带 极窄脉冲 窄带 干扰 

分 类 号：TN911[电子电信—通信与信息系统]