一种新的基于前导序列的MSK位定时同步方法  

MSK bit timing synchronization method based on leader sequence

作　　者：周建英[1] 杜亚琦[1,2] 

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

出　　处：《电子设计工程》2014年第4期36-38,42,共4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。本文基于1bit差分解调算法,提出了一种基于前导序列的位定时同步方法。基于前导序列的自相关性,该方法首先将差分解调数据划分为若干并行支路,然后利用并行滑动相关法搜索各支路前导序列的自相关峰,最后根据大数判决方法完成位定时同步。通过Matlab仿真表明,该方法性能接近Monte Calor仿真。In the digital communication,the bit timing synchronization is the necessary condition that realization of digital communication.The paper proposes a MSK bit timing synchronization method based on leader sequence based on 1bit differential demodulation.Based on the autocorrelation of the leader sequence,first,differential demodulation data is divided into same parallel branches.Then,it searches the autocorrelation peaks of the leader sequences by parallel sliding correlation algorithm.Final,it completes bit timing synchronization based on the large number decision method.Matlab simulation indicates the performance nears Monte Calor simulation.

关 键 词：MSK 位定时同步 前导序列 差分解调 

分 类 号：TN911.3[电子电信—通信与信息系统]