接收机位定时恢复的设计  

Design of the receiver's bit timing recovery

作　　者：郝建华[1] 许斌[1] 卿超[2] 

机构地区：[1]装备指挥技术学院军用光电工程研究中心,北京101416 [2]装备指挥技术学院研究生四队,北京101416

出　　处：《国外电子测量技术》2007年第12期16-18,54,共4页Foreign Electronic Measurement Technology

摘　　要：数字通信系统中,位定时同步是正确收发信号的先决条件之一,对于单载波而言,需要正确的寻找到最佳采样点,因为一点偏移都会造成星座图的发散。文中研究了接收机定时恢复环路的设计,该环路包括平方定时误差检测,环路滤波,定时控制和内插滤波器单元组成,通过Matlab仿真表明,该环路能够很好的实现定时恢复。In the digital communication,bit timing recovery is one of the important figures to receive the signal correctly.For the single carrier,it is needed to find the optimal sampling,because a little offset may make the constellation to scatter.In the paper,the design of the receiver＇s timing recovery loop is studied, which includes squaring timing error detection,loop filter,timing controller and interpolation filter.The result of the Matlab simulation indicates that this loop can realize the timing recovery well.

关 键 词：内插滤波器 平方定时恢复 定时控制 仿真 

分 类 号：TN753[电子电信—电路与系统]