一种DVB-S2接收机帧头信息检测模块结构及算法实现

The Structure and Algorithm of a Frame Originating Point Information Detecting Module for DVB-S2 Receivers

基于DVB-S2系统的帧头结构特点,提出了一种通过差分检测确定帧头位置进行帧头信息提取的帧同步算法。针对帧头信息提取过程中存在的帧头译码无法对抗较大的系统频率偏移的问题,提出了利用相关扫频算法进行粗频偏校正的算法结构,并给出了推导过程与仿真结果。

Based on the structure of the frame originating point in DVB - S2 system, this paper presents a frame synchronizing algorithm which can realize the frame originating point localization and information pick- up. In the process of the pick-up, the coding of the frame originating point is no match for the frequency offset. An algorithm structure, which can conduct the coarse frequency offset by correlation frequency sweep algorithm, was proposed. And both the derivation and simulation result are given.