Research On Modulation And Demodulation Technologies Of Scatter Communication System And Implementation Of The Central Control Unit

Modulation and demodulation method of 2Mb/s scatter communication system are discussed in this paper in order to implement the data transmission with higher efficiency and higher reliability. Firstly, we made some theoretic research on the channel characteristic of the troposphere and build the channel model, which can simplify our research. Then, we discuss the principle of OFDM and some key point of it, which testify our assumption. At last, we build the system project and do some performance analyzing which do make progress of the system efficiency and reliability; we also discussed some key point of this project. Furthermore, the software and hardware design of the central control unit, which is a main part of our system, is also discussed.