针对数字视频广播(DVB—T和DVB—H)系统,提出了一种定长归一化峰值算法实现模式和保护间隔的检测以及帧同步。该算法仅利用循环前缀的特点,不需要其他的辅助数据。仿真表明,该算法检测性能好,可推广应用于其他具有多种模式和保护间隔检测及帧同步的OFDM系统。
According to DVB-T and DVB-H systems, a fixed length unitary peak(FLUP) algorithm is proposed to complete mode and guard period (GP) detection, as well as frame synchronization. This algorithm is based on the characters of GP and does not need other assistant data. Simulations show that the proposed algorithm has good performance, and it can also be used in other OFDM systems with different transmission modes, for mode and GP detection, as well as frame synchronization.