OFDM PHY Layer SimulationYE Qing-yun,XIA Fei(School of Information Engineering,Wuhan University of Technology,Wuhan 430070,China)The main goal of this thesis work was to introduce OFDM and learn the features of the IEEE standard 802.11a,and afterwards based on the theory of system divisibility,adopting the visual emulation scheme of the system with the lamination and hierarchical structure to develop an OFDM 802.11a PHY layer base band implementation with the characteristics showed in such standard.At the same time to analysed the system BER running this model under different SNR in the AWGN channel.OFDM;CP;SNR;BER