CSS-BOK的匹配滤波接收研究  

Study of Receiving-matched Filter based on CSS-BOK

作　　者：韩佳南[1] 

机构地区：[1]桂林电子科技大学通信研究所,广西桂林541004

出　　处：《通信技术》2011年第4期40-42,共3页Communications Technology

基　　金：国家自然科学基金资助项目(批准号:60962001)

摘　　要：高速无线通信系统中,Chirp信号作为一种新的超宽带信号,既能实现高速数据传输,又能满足精确定位的要求。借助MATLAB仿真工具,阐述Chirp信号的时频特性以及匹配滤波过程,利用Chirp信号匹配滤波后的压缩特性,对匹配滤波进行仿真。仿真结果显示Chirp信号经匹配滤波器后脉冲宽度被大大压缩,信噪比得到显著提高,与理论分析相吻合。设计了Chirp信号超宽带无线通信系统,仿真得到在AWGN下匹配滤波接收的系统误码率与信噪比关系图,分析了将线性调频扩频CSS(Chirp Spread Spectrum)技术应用到高速无线超宽带通信中的可行性。Within the high-speed wireless communication systems,Chirp signal,as a new type of UWB signal,can achieve high-speed data communication and accurate positioning.This paper describes the time-frequency characteristics of Chirp Signal and matched filtering process.The simulation on Chirp matched filtering with MATLAB is implemented by using the compression characteristics of filtered chirp signal.The result shows that the pulse width of the chirp signal is greatly compressed and SNR greatly improved,and this result is conformable to the theoretical analysis.The paper also gives a wireless communication system using Chirp UWB.The diagram of BER and SNR is obtained from to the simulation under the condition of AWGN channel model.The feasibility in applying the Chirp spread spectrum CSS（Chirp Spread Spectrum） technology to high-speed wireless ultra-wideband communication is analyzed and verified.

关 键 词：CHIRP信号 匹配滤波 二进制正交键控 超宽带 

分 类 号：TN929.5[电子电信—通信与信息系统]