摘要
介绍了串口通信的传输格式,并在此基础上提出了一种基于FPGA控制串口和调制解调电路之间实现通信的一种设计方案。解调器通过FPGA向串口发送数据时首先对解调数据进行9倍过采样,再利用滑动判决,根据判决结果找到误码率最小的一路数据送到串口。文章给出了利用FPGA实现该方案的具体方法和工作流程,该设计方案灵活性有了很大的提高。
Based on the introduction of serial communication format we bring forward a design scheme for the communication between serial port and modem. In the design, when demodulator sent data to serial port through FPGA, the demodulated signals were sampled in FPGA, the sampling frequency was over 9 times of original signal, and these sampled signals were applied sliding-judgment to calculate the least BER. According to this least BER, we can find the signal branch, which had the smallest BER. In this paper, we also describe the working procedure and the implementation of FPGA design. The design is more flexible if compared to the traditional way.
出处
《电力系统通信》
2006年第3期65-67,共3页
Telecommunications for Electric Power System
关键词
FPGA
串口通信
滑动判决
调制解调
FPGA
serial communication
sliding-judgment
modulation and demodulation
