在DVB-T 2K系统中常规同步算法均采用保护间隔和导频实现,其移动速度不能超过100k/h.本文提出一种低复杂度的利用叠加的、极弱能量的复巴克码和保护间隔进行帧同步算法.仿真表明:对于150km/h的高速移动DVB-T系统,该算法能极快地获得良好的帧同步性能;同时,该叠加的复巴克码对系统性能的影响可以忽略不计.

In the European DVB-T systems,the conventional synchronization algorithms used to adopting pilot and the guard interval.The mobile speed of the DVB-T receiver is within 100 km/h.The novel frame algorithm,which employs the superimposed Barker code with much lower power and the guard interval,is proposed for DVB-T receiver.Simulation shows that the algorithm can attain frame synchronization for DVB-T systems with mobile speed 150 km/h.Furthermore,the effect from the superimposed Barker code can be ignored.