摘要
针对广泛使用的集中式插入法或间隔式插入法帧同步,在非合作通信帧长和帧同步码未知的情况下,提出了一种对含误码数据序列的帧同步分析方法。通过建立分析模型,在识别序列有效帧长的基础上,利用相关峰值确定帧同步码位置,进而完成帧同步码的识别。相比于现有的帧同步分析方法,在适用范围和识别性能方面有较大提升,有更强的容错性能,并且能同时适用于短同步码和长同步码的分析。
In non-cooperative communication, frame length and frame synchronization codes are un- known for data streams that widely implement frame synchronization inserted concentratively or discretely into each frame. Here, some analytical models for frame synchronization are proposed. Firstly, the frame length is got by analysing data matrix, then the position of frame synchronization codes is determined using correlation peak, finally it is possible to get the whole frame synchronization information. Unlike most existing blind recognition algorithm, the results show that the proposed algorithm is a larger increase in the applicable range and recogni- tion performance and have better error-fitness capability. Further the proposed algorithm can also be used for short and long frame synchronization codes.
出处
《通信对抗》
2016年第1期1-4,12,共5页
Communication Countermeasures
关键词
帧同步
帧长
帧同步码识别
frame synchronization
frame length
frame synchronization codes recognition
