基于PSWF的非正弦通信系统同步方法  

Novel Synchronization Method for Nonsinusoidal Orthogonal Modulation System in Time Domain Based on PSWF

作　　者：张磊[1] 康家方[1] 赵志勇[1] 

机构地区：[1]海军航空工程学院,山东烟台264001

出　　处：《无线电通信技术》2011年第4期7-9,共3页Radio Communications Technology

基　　金："泰山学者"建设工程专项经费资助

摘　　要：基于椭圆球面波函数(Prolate Spheroidal Wave Function,PSWF)的非正弦时域正交调制信号的自相关值呈现明显的起伏震荡特性,这给同步检测带来了较大的困难。针对这一问题,提出了一种采用m序列调制基带PSWF脉冲作为同步头的同步提取方法,该同步头具有尖锐的自相关峰,有效解决了同步困难的问题。同时,给出了该同步方法的实现方式,可有效降低同步捕获过程运算量,缩短同步捕获时间,提高同步捕获精度。The autocorrelation of nonsinusoidal orthogonal modulation signal in time domain based on Prolate Spheroidal Wave Functions（PSWF）is concussive,so the synchronous detection is difficult.Aiming at this problem,a synchronous extraction algorithm which uses m sequence modulating baseband PSWF as synchronous head is proposed,this synchronous head has sharp correlative peak,which effectively resolves the synchronization difficult.Then,a implementation method which can effectively reduce the computational complexity,curtail the synchronization time and improve the timing precision was given.

关 键 词：非正弦时域正交调制 同步 椭圆球面波函数 

分 类 号：TN911.3[电子电信—通信与信息系统]