Wireless communications are subject to three major constraints:(i) a complex and unpredictable fading channel,(ii) a scarce radio spectrum, and (iii) limitations on the power and the size of handheld terminals. New technologies have been introduced and evolved based on these constraints. Among all of these technologies Worldwide Interoperability for Microwave Access (WiMax) has drawn considerable attention for broadband wireless communication. The WiMax technology has been standardized under IEEE 802.16 d and Orthogonal Frequency Division Multiplexing (OFDM) is the core of the WiMaxtechnology. In order to investigate the performances of WiMax system a practical channel model is required. Many channel models have been proposed to mimic a real world scenario including Stanford University Interim (SUI) channel. This model has attracted considerable attentions of the researchers in the last few years. In this paper, the performances in terms of bit error rate (BER) of IEEE 802.16 d have been investigated by using different SUI channel model. Some popular digital modulations like BPSK and QPSK have been considered. The simulation results have been presented and compared for different SUI channel models.
|Journal||International journal of Computer Networks & Communications|