Research on detection method of full-duplex wire communication system

摘要

It is difficult that data acquisition is achieved when the data is transmitted in a pair of wires with full-duplex wire communication mode. Aiming at this issue, a method is presented which can separate the receiving signal from the mixed signal of the receiving and sending. Firstly, the duplex principle and the testing requirements of full duplex communication system are analyzed. Secondly, the electronic 2/4-wire converter is used to separate the mixed signal, and the digital adaptive echo canceller is adopted to complete echo interference cancellation. Finally, on the basis of software radio technology and storage testing technology, a detection system is constructed which can achieve data acquisition and excitation signal reconstruction.