802.16e系统同步方法  

Synchronization Method for 802.16e Systems

作　　者：贠超[1] 卜智勇[1,2] 

机构地区：[1]中科院上海微系统与信息技术研究所,上海200050 [2]上海瀚讯无线技术有限公司,上海201112

出　　处：《计算机工程》2010年第5期26-27,31,共3页Computer Engineering

基　　金：国家"863"计划基金资助重大项目(2006AA01Z280)

摘　　要：针对基于802.16e前导周期性的同步方法在有相邻扇区干扰情况下失效的问题,提出一种基于前导时域共轭对称性的同步方法。该方法可同时完成帧检测、符号定时和载波频偏估计,简化系统同步模块的复杂度。仿真结果表明,即使在扇区干扰严重的多径信道环境下该同步方法依然可以获得较好的性能。The pseudo period of the preamble in 802.16e systems disappears if there are inferences caused by neighboring segments. The method based on the pseudo period of the preamble can not work under this condition. A novel synchronization method based on the conjugate symmetry of the preamble is proposed. The method can implement frame detection, symbol timing estimation and cartier frequency offset estimation concurrently. It is efficient and can reduce the complexity of synchronization module of system. Simulation results show that this method can gain good performance even in multi-path channel with severe inferences caused by neighboring segments.

关 键 词：帧检测 同步 共轭对称 

分 类 号：TN911.23[电子电信—通信与信息系统]