Research On The Technology Of High-Speed Data Transmission In Satellite Communications

This thesis is focused on the new concept of clustered OFDM for high-speed data transmission in the Satellite-Satellite and Satellite-Earth communications, researches on the key technology of synchronization and cluster.he principle of OFDM and the model of OFDM transmitter are analized firstly; through the research and simulation of OFDM and cluster, this paper describes the theory of frequency division and code division cluster OFDM, the synchronization and channel estimation are analized emphasizely; then it educed the model of satellite communications channel and analized it. finally, introduces a 4-cluster OFDM simulation system, and gives some simulation and experiment results. It indicates that the simulation system can realize the speed of GBIT for data transmission.