一种基于Frft的BOK-Chirp信号扩频通信方法  

A BOK-Chirp Spread Spectrum Communication Scheme Based on Fractional Fourier Transform

作　　者：周昱昕 包卫东[2] 

机构地区：[1]中国人民解放军73158部队 [2]国防科技大学信息系统与管理学院

出　　处：《无线电工程》2014年第9期32-34,73,共4页Radio Engineering

摘　　要：线性调频信号(Chirp)在对应的分数阶傅里叶变换(Fractional Fourier Transform,Frft)域上具有良好的聚焦性能,据此提出了一种基于Frft的二进制正交键控(BOK)调制的Chirp信号扩频通信方法。发射端采用BOK-Chirp信号,在接收端采用Frft对Chirp信号进行检测。仿真分析表明,该方法可获得较好的误码率。Chirp signals have the best energy concentration in a special fractional Fourier domain. A BOK-Chirp spread spectrum communication scheme based on fractional Fourier transform（ Frft） is proposed. The Chirp signals are modulated by binary orthogonal keying signals at the transmitting end,and they are detected through Frft at the receiving end. Simulation shows that the scheme has good performance in bit error rate.

关 键 词：线性调频信号 分数阶傅里叶变换 扩频通信 

分 类 号：TN911.23[电子电信—通信与信息系统]