FPGA Design And Implementation Of DVB-T Channel Code And Modulation Section

Based on the ALTERA's latest released Stratix chips , this item finished the FPGA implementation of the DVB-T transmitting system with veilog HDL . The main hardware-platform is based on the Stratix EP1S25 DSP development board, and the AD9857 chips on the daughter-board implement the tasks of frequence shift of baseband signal to the intermediate frequency, together composing the hardware system.In this paper , the theory of COFDM and DVB-T are introduced firstly . Secodely , introduces the FPGA implementation of the DVB-T coder and modulator , some of the core arithmetic , such as , inner coding , inner-interleaving ( bit-wise / symbol interleaver ) , signal constellations and mapping , OFDM frame structure are detailed . Then , introduces the FPGA designed of the DVB-T decoder and demodulator , some of the core arithmetic , such as , demapper , inner-deinterleaving ( bit-wise/symbol interleaver ) , viterbi decoder are detailed . In addition , Frame adptive and TPS demodulator is implemented with C fixed point simulation . At last , make a summary of this paper and all my whole work .The system of DVB-T coder and modulator does a good work , and the system of DVB-T decoder and demodulator is in debug .