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BER An Alysis through WIMAX PHY Layer Over An AWGN Flat Fading Channel


Deepak Sharma, Meenakshi Chourasiya


Vol. 13  No. 8  pp. 105-108


WIMAX (worldwide interoperability for microwave access) is an emerging global broadband wireless system based on IEEE 802.16 standard. The emergence of WIMAX has attracted significant interest from all the fields of wireless communications including students, researchers, system engineers and operators. Developing an understanding of the WIMAX system can be best achieved by looking at the model of the WIMAX system. This paper discusses the model building of the WIMAX physical layer using Matlab 7.9 version. This model is useful tool for BER performance evaluation for data communication by the WIMAX physical layer under convolution coding with ½ and 2/3 rates and transmitting with the OFDM technique. Convolution coding is used to improve the system performance. The performance evaluation of the system modulation schemes BPSK, QPSK, 16 QAM with ½ and 2/3 encoding rate. The simulation result on BER over Additive White Gaussian Noise (AWGN) and flat fading channel. The primary issue in implementation of PHY layer is robust performance in multipath fading environments. In this paper, the performance of Wimax PHY layer with convolution coding mechanisms is investigated and compared with the existing mechanisms. The results obtained show that convolution coding offers lower BER and enhance the performance of the PHY layer (multipath) environments.


World Wide Interoperability for Microwave access (WIMAX), Bit Error Rate (BER), Additive White Gaussian Noise (AWGN), Physical Layer (PHY), Orthogonal Frequency Division Multiplexing (OFDM).