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PERFORMANCE EVALUATION OF WIMAX BASED OFDMA SYSTEM IN MULTIPATH FADING CHANNEL

Vivek Kumar Jaiswal, Mr.G.S.Tripathi

WiMAX has brought a revolution in broadband services today. It be taken as a main technology in the design of wireless sensor networks. We have analysed the model of Physical layer if WiMAX Simulink model in Matlab. In this paper we show performance evaluation of the WiMAX under different modulation mapping under different channel conditions. Standards from IEEE 802.16e are used in this model. The model is built with considering MAC Packet Data processed by the Physical Layer with Convolutional Encoding the modulation is OPSK and transmitted after OFDM/OFDMA(256 carriers) symbols. We have compared the performance of OFDM and OFDMA system in fading channel environment at different repetition factor of OFDMA system.