Simulation of WiMAX 802.16e MAC Layer Model: Experimental Results

The needs of high speed broadband wireless access at lower cost and easy deployment to meet the modern mobile services leads in the emergence of an another IEEE standard called Worldwide Interoperability for Microwave Access (WiMAX). The limitations of conventional Broadband wireless access have been overcome with the scalable features of WiMAX. The main purpose of this paper is to evaluate, analyze and compare the performance of a WiMAX under different data rate and coding techniques. For this purpose a simulation model of WiMAX MAC and PHY layer transmitter and Receiver has been designed using Simulink in MATLAB. The model presented in this paper built with generic MAC PDU processed by the Physical Layer using Convolutional Encoding Rate of 1/2 with QPSK modulation and transmitted with 256 carrier OFDM symbols. MAC Layer receives input data from higher layer is fragmented and packetized before transmission over physical layer. In this thesis, the performance analysis is being done by studying the bit loss and Packet losses occurred during transmission over channel. The performance of transmitted data depends on parameters like Signal to noise ratio (SNR) and Signal power.