Performance Analysis of Cyclic Redundancy Check(CRC) encoded Fixed WiMAX Wireless Communication System under Implementation of M-ary Quadrature Amplitude Modulation(QAM) Technique

摘要

IEEE802.16 known as WiMAX technology is a promised broadband wireless technology that promises high-speed data services up to the costumer end. The aim of this paper is the performance evaluation of Cyclic Redundancy Check (CRC) encoded fixed WiMAX system under different combinations of M-ary quadrature amplitude modulation techniques (QAM, 16-QAM and 64 -QAM) and different communication channels AWGN and fading channels (Rayleigh and Rician). It offers both line of sight and non-line of sight wireless communication. In our research work, we investig ated the physical la yer performance on the basis of bit error rate (BER) and signal to noise ratio (SNR). This research work demonstrates that QAM modulations is better than the 16-QAM and 64-QAM modulations schemes of AWGN channels as it has the lowest bit error rate (BER).