一种新的低信噪比下的突发帧同步方法  

A New Burst Frame Synchronization Method with Low SNR

作　　者：贾巧伶 JIA Qiaoling(The 10th Research Institute of CETC,Chengdu 610036,China)

机构地区：[1]中国电子科技集团公司第十研究所,四川成都610036

出　　处：《电子质量》2024年第8期54-57,共4页Electronics Quality

摘　　要：帧同步是系统接收机进行解调的基础,只有获得正确的帧同步,才能从接收的数据流中识别出帧的起始时刻和结尾时刻,正确地恢复帧信息,实现对数据信息的处理。通过对已有DVB-S2帧同步方案进行研究,提出一种基于B-GPDI帧同步改进算法的方案。与原有方法进行对比,该方案在低信噪比下更能提高帧同步正确检测概率并降低帧同步虚警率,快速准确完成同步。Frame synchronization is the basis of demodulation by the system receiver.Only by obtaining the correct frame synchronization can the beginning moment and end moment of the frame be identified from the received data stream,the frame information correctly be recovered and the processing of data information be realized.By studying the existing DVB-S2 frame synchronization scheme,an improved frame synchronization algorithm based on BGPDI is proposed.Compared with the original method,this scheme can improve the correct detection probability of frame synchronization and reduce the false alarm rate of frame synchronization under low SNR,and complete the synchronization quickly and accurately.

关 键 词：DVB-S2 帧同步 低信噪比 

分 类 号：TN919.3[电子电信—通信与信息系统]