Research On MODEM Of The Airborne Electromechanical Communication System Based On PLC

In the dissertation, MODEM technology of the airborne electromechanical communication system based on PLC is studied and the research has pratical value to improve the modernization of aeronautic equipments in our country.Firstly, the airborne electromechanical system,the development of bus protocol, power line channel and power system are described in the dissertation; secondly, the algorithm of QPSK and Root Raised Cosin are discussed ;thirdly, the designation of the hardware and software of the MODEM board ,based on QPSK, built up with DSP and CPLD are given.The high-speed data transporting card of airborne electromechanical communication system, which is based on PLC, are put forward in our country.