The Dvb-t Channel Coding And Modulation To Achieve

DTTB ( Digital Television Terrestrial Broadcasting) is one of the present digital television broadcasting modes, whose transmission media is earth. But the standard of Digital Television Terrestrial Broadcasting is still in disputation, for its transmission environment is rather awful, its spectrum resource is very limited and its service required is disperse, so it is potential to be improved in many aspects.DVB-T(Digital Video Broadcasting) specification is one of the DTTB standards.It has better results in digital televison program terrestrial reception test and has good appraisement in digital television broadcasting industry.This thesis based on Europe DVB-T COFDM(coded orthogonal frequency division multiplexing) system.I compare the three kind of international standard at first, then I make a material study of the transmitting system according to the European standard channel coder, I use the VHDL code to design the circuits:energy dispersal ,outer coding,outer interleaving ,inner Coding and inner interleaving. The simulation results show the function and capability of modules is designed successfully.