Performance Analysis of IEEE802.16 OFDM Physical Layer under Different SUI Channels

Wimax which represents world wide interoperability for microwave access is a major part of broad band wireless network having IEEE802.16 standard providing fixed and mobile platform for broadband internet access. The Wimax forum has adopted IEEE 802.16 OFDM PHY layer for the equipment manufacturer due to its robust performance in multipath environment. In this paper we investigate the simulation performance of IEEE 802.16 OFDM PHY layer. The Stanford University Interim (SUI) channel models are selected for the wireless channel in the simulation and we also investigate the estimation of channel at high frequencies with conventional Least Square (LS) and Minimum Mean Square (MMSE) estimation algorithms. Channel state information for OFDM systems based on pilot carrier is carried out through Matlab simulation. The performance of MIMO OFDM is evaluated on the basis of Bit Error Rate (BER) and Mean Square Error (MSE) level.