Digital OFDM transmitter architecture and FPGA design

OFDM technology is an effective multicarrier technology and is the key technology of HiNOC physical layer standard. In this paper, a digital OFDM transmitter architecture is studied and designed. At system level, algorithm model is constructed with MATLAB. At circuit level, the main function modules such as a 256-point IFFT processor are presented considering implementation complexity. At last, the OFDM transmitter is implemented with ALTERA StratixII FPGA. The testing result shows that transmitter function is correct and performance meets design requirement perfectly.