Serial communication baud rate automatic identification

Serial communication baud rate automatic identification technology classification: network and the
http://www.siliconray.com/usb-converter-part-pins-uart-module.html
corresponding author: QiaoQu ZhaoGuoHao WangWenJi released in time: the 2008-01-24 for asynchronous serial communication, only in the communication is the same in baud rate, to realize the correct data transmitting and receiving; And some system always want to realize to the various baud rate of compatible. Usually the approach is, ask the other side first issued the regulations characters or data, the system of the character or received after data, calculation each other's baud rate. To adapt to each other's baud rate, such as some wireless transceiver module, GSM communication module, etc. Yet for testing, testing and other fields, and is not required to send system being tested has been a fixed characters or data, then for this kind of communication system and how to realize the wave ?