Performance Evaluation of Different Level Modulation Schemes for an Efficient Mobile WiMAX System in OFDM Under Rayleigh Fading and AWGN Channel
Mobile WiMAX technology has become one of the fastest growing arenas of internet accessing in the people modern daily life. WiMAX is introduced by the Institute of Electrical and Electronic Engineers (IEEE) to provide a worldwide interoperability for microwave access. IEEE 802.16e-2005 has been developed for mobile wireless communication which is based on Orthogonal Frequency Division Multiplexing (OFDM) system and this facilitates going towards the 4G mobile in the future. In this paper, the authors evaluate the performance of different level modulation techniques Quadrature Amplitude Modulation (QAM) and Phase Shift Keying (PSK) and compare with the theoretical assessment to find out the best performance of physical layer for WiMAX Mobile technology.