摘要
为实现设备中存在的低速数据光纤通信的同步复接/分接,提出一种基于FPGA的帧同步头信号提取检测方案,其中帧头由7位巴克码1110010组成,在数据的接收端首先从复接数据中提取时钟信号,进而检测帧同步信号,为数字分接提供起始信号,以实现数据的同步分接。实验表明,此方案成功地在光纤通信系统的接收端检测到帧同步信号,从而实现了数据的正确分接。
To realize the synchronous multiplexing/de - multiplexing of the low - speed digital optical fiber communication system, we put forward a frame synchronization signal detecting scheme based on FPGA. The frame head is constructed by a 7 bit Bark code of 1110010. The clock signal is picked up from multiplexing data at the data receiving end, and the synchronous signal is detected for supplying the start signal for the digital de- multiplexing. Experiments show that this method can implement the frame synchronization head detection, and thus realize the correct de - multiplexing of the digital signals.
出处
《电光与控制》
北大核心
2006年第4期90-92,共3页
Electronics Optics & Control
基金
中国科学院二期创新项目资助(C04708Z)
关键词
帧同步
VHDL
复接/分接
巴克码
frame synchronization
VHDL
multiplexing/de - multiplexing
Bark code
