Research On Synchronization Technique In COFDM Transmission System

Based on an overview of HDTV, this paper gives the COFDM transmission theoryand DVB_T COFDM scheme.On the basis of synchronization theory in multi-carriermodulation,it analyses the symbol timing recovery~. frequency offset estimation andsampling clock offset estimation in principle. Simulation of some algorithms withMatlab has been done and a design scheme based on FPGA proposed.This paper alsomakes the simulation of circuits with Quartus and FPGA-hardware into reality.