Chirp-UWB系统匹配滤波解调接收机的设计与实现  

Design and Implementation of Receiver Based on Matched Filter Demodulation in Chirp-UWB System

作　　者：樊孝明[1] 林基明[1] 仇洪冰[1] 

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《电视技术》2012年第17期135-138,155,共5页Video Engineering

基　　金：广西自然科学基金项目(0640168;0991018Z)

摘　　要：Chirp-UWB通信系统具有低功率谱密度、强抗干扰能力、易同步实现、远距离通信以及高的测距精度等优点,因而获得研究人员的广泛关注和研究。Chirp-UWB通信系统获得这些优良特性的关键之一是接收机采用匹配滤波解调技术实现。利用MATLAB/Simulink仿真平台,对匹配滤波解调的Chirp-BOK UWB通信系统进行了建模,构建的系统模型参数修改方便、实时性强。改变信道参数,能够检验系统在不同信噪比条件下的接收机的解调性能,为接收机硬件电路设计提供理论依据与参考,极大地减少了硬件电路设计和实验过程的盲目性。Chirp-UWB communication systems gain extensive researches and attention because of many characteristics such as low power spectral density, strong anti-interference ability, easy synchronization, long-distance communications and high-ranging accuracy. One of the keys to achieve these excellent features is to use matched filter in the demodulation receiver. Using MATLAB/Simulink simulation platform, the Chirp-BOK UWB communication system with the matched filter demodulation is modeled, and the system model＇ s parameters are easily modified and its real-time performance is powerful. By changing the channel parmneters, the performances of demodulation of the receiver is tested in different SNR, which provides a theoretical basis and reference for hardware design and greatly reduces the blindness of hardware circuit design in experiment process.

关 键 词：超宽带 CHIRP SIGNAL 匹配滤波器 包络检波器 

分 类 号：TN949.6[电子电信—信号与信息处理]