地面数字电视广播技术DVB-T2系统时间同步算法  

Time Synchronization Algorithm of Terrestrial Digital Television Broadcasting Technology DVB-T2 System

作　　者：许月兴 XU Yuexing(Convergent Media Center of Laixi county Shandong Province,Qingdao 266600,China)

机构地区：[1]山东省莱西市融媒体中心,山东青岛266600

出　　处：《电声技术》2022年第10期110-113,共4页Audio Engineering

摘　　要：DVB-T2系统是当前世界范围内应用较为广泛的新一代地面数字电视广播技术。其在实际应用中可能会出现时频同步误差,进而产生定时偏差问题。为了克服这一不利因素,对该系统的时间同步机制进行研究,提出优化算法,主要措施包括帧定时同步捕获、符号定时同步、正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)符号频率同步估算等。针对以上算法开展严谨的仿真模拟,验证其性能和有效性。DVB-T2 system is a new generation of terrestrial digital television broadcasting technology which is widely used in the world. However, there may be time-frequency synchronization error in its practical application, which leads to timing deviation. In order to overcome this disadvantage, the time synchronization mechanism of the system is studied, and an optimization algorithm is proposed,including frame timing synchronization capture, symbol timing synchronization, Orthogonal Frequency Division Multiplexing(OFDM)symbol frequency synchronization estimation, etc., and a rigorous simulation is carried out to verify the performance and effectiveness of the above algorithms.

关 键 词：DVB-T2 时间同步算法 仿真 

分 类 号：TP311.1[自动化与计算机技术—计算机软件与理论]