一种改进的早迟积分型位定时同步方法  

An improvement method in the early-late integral bit synchronization

作　　者：杜亚琦[1,2] 周建英[2] 

机构地区：[1]通信信息控制和安全技术重点实验室,浙江嘉兴314033 [2]中国电子科技集团公司第三十六研究所,浙江嘉兴314033

出　　处：《电子设计工程》2015年第4期152-154,共3页Electronic Design Engineering

摘　　要：数字通信系统中,位定时同步是实现正常数字通信的必要条件。位定时同步方法有很多,其中早迟积分型位定时方法是应用最广泛的位定时方法之一。本文基于传统的早迟积分型位定时方法,通过改进早迟积分环的鉴相器,提出了一种改进的早迟积分型位定时方法。经Matlab仿真表明,在相同的环路滤波参数下,改进的早迟积分型位定时方法的环路收敛速度最优可以提高2倍。In the digital communication, the bit timing synchronization is the necessary condition that realization of digital communication. There are many bit timing synchronization method. Early-late integral bit timing synchronization method is most widely used. Based on the traditional early-late integral bit timing synchronization method, this paper improves the phase discriminator of the early-late integral loop, and presents an improved early-late integral synchronization method. The matlab simulation shows that the convergence speed of the loop of the new method can be improved two times in the best, in the same condition of loop filter.

关 键 词：早迟积分 位定时同步 环路滤波 鉴相器 

分 类 号：TN911.3[电子电信—通信与信息系统]