E波段系统中基于双相关法的定时同步技术  

Timing synchronization technology based on double-correlation for E-band system

作　　者：陈圣吉[1] 周志刚[1] 王丽云[1] 卢佳欣[1] 曾建明[1] 

机构地区：[1]中国科学院上海微系统与信息技术研究所,上海200050

出　　处：《信息技术》2015年第8期6-9,17,共5页Information Technology

基　　金：中科院战略先导科技专项(XDA06011100);中科院重点部署项目(KGZD-EW-103-5(4))

摘　　要：针对E波段微波传输系统中高速准确实现定时同步的需求,提出了基于双相关法的定时同步方案,利用特殊设计的前导序列中循环前缀的重复性,通过序列延时自相关进行粗同步,利用本地序列与接收信号的互相关进行细同步,通过平滑操作进一步提高相关判断的可靠性。通过在多径衰弱环境下MATLAB仿真证明,该设计在E波段微波传输系统中低信噪比下有较好的性能。In order to meet the requirement of high-speed data transmission timing synchronization in Eband microwave transmission system,a timing synchronization solution based on correlation method is proposed. The coarse timing synchronization can be realized with auto-correlation by the repeatability of the cyclic prefix in preamble which is specially designed for E-band system. The fine timing synchronization can be implemented using cross-correlation between local training sequence and received signals. Through the smooth operation it further improves the reliability of the judgment. The MATLAB results indicate the design is of high-performance under low signal-to-noise ratio.

关 键 词：E波段 定时同步 自相关 互相关 平滑 

分 类 号：TN925.92[电子电信—通信与信息系统]