Analysing various fading channels using different modulation techniques under IEEE 802.16 standard

An extensive demonstration of WiMAX system has been presented in this paper. The proposed system is tested under Rayleigh, Rician, Nakagami and Lognormal shadowing channel with different modulation techniques. It is seen from the simulation results that the WiMAX system provides good reduced bit error rate, with BPSK, 4-QAM, and QPSK techniques. We have estimated that different modulation techniques and analyse BER for all different fading channels. Among all different channels Nakagami channel using different modulation technique under IEEE 802.16 standard provide better performance at higher SNR. Thus, we can say that the Nakagami channel is best to achieve optimum utilization of bandwidth.