波特率自适应信号接收装置设计及其FPGA实现

DESIGNING BAUD RATE ADAPTIVE RECEIVER AND ITS FPGA IMPLEMENTATION

针对当前波特率自适应方法速度慢,使用不方便的问题,提出一种基于单脉宽波特率判别和二进制数据近似的波特率自适应方法。该方法通过单脉宽波特率判别可以实现对任意单个完整数据帧的波特率识别,然后通过波特率转换完成数据接收,从而实现不同波特率下数据的实时接收。设计使用FPGA开发板进行测试,通过上位机将全部数据分别使用不同波特率进行发送,并使用开发板实现了数据的实时准确接收,从而验证了该设计的可行性。

In view of the problem of current baud rate adaptive method in low speed and inconvenient use, we proposed a baud rate adap- tive method which is based on single pulse width baud rate discrimination and binary number approximate. The method can realises baud rate identification on any single complete data frame by single pulse width baud rate discrimination, and then accomplishes data receiving through baud rate conversion, so that achieves real-time data receiving under different baud rates. In the design we used FPGA development board for test, transmitted all data through host computer in different baud rates respectively, and realised the real-time and accurate data receiving with development board as well, thereby verified the feasibility of the design.