OFDM系统的自适应符号同步算法  

An Adaptive OFDM Symbol Synchronization Algorithm

作　　者：王顶[1] 许家栋[1] 杨川[1] 

机构地区：[1]西北工业大学电子信息学院,西安710072

出　　处：《信息安全与通信保密》2006年第1期77-79,共3页Information Security and Communications Privacy

基　　金：国防973项目(51308)资助

摘　　要：本文提出了一种在OFDM系统中基于导频符号的自适应符号同步新算法,它利用FFT的特性,采用频域同步方法,对符号定时进行估计。该算法计算量小,插入的导频数少,并且同步捕获速度、精度高低,可以灵活调节。仿真结果表明,该算法能简单而有效地获取符号同步,自适应性强。An adaptive symbol synchronization algorithm is proposed in orthogonal frequency Division Multiplexing （OFDM） systems, which is based on pilot symbol and exploits the propertins of FFT. The symbol timing is estimated in frequency domain, The algorithm needs only simple computation and is little resource loss, which can adjust the synchronization acquisition and precision conveniently. Simulations demonstrated that the symbol synchronization is completed simply arid effectively, which is very adaptive.

关 键 词：正交频分复用 符号同步算法 导频 自适应估计 

分 类 号：TN919.3[电子电信—通信与信息系统]