Downlink spectral efficiency of mobile WiMAX: article / Mohamad Iskandar Saian

The IEEE 802.16 is the working group on broadband wireless access standards. The Mobile WiMAX was introduced in the final standard, IEEE 802.16e-2005. The mobile WiMAX makes changes and give benefits in mobility and flexibility for the user. Mobile WiMAX is a cost-effective approach to significantly extend the coverage and enhance the throughput and capacity especially the downlink part. This project has been investigated the performance of advanced antenna such as Single Input Single Output (SISO) and Multiple Input Multiple Output (MIMO) techniques in the downlink of mobile WiMAX by deploying Hyper Text Transfer Protocol (HTTP) application. The OPNET modeler software is used to evaluate the performances including throughput, spectral efficiency, SNR and Modulation Coding Scheme (MCS). Results of simulation show that higher MCS (e.g. 64-QAM) which deployed MIMO antenna has better performance as compared to lower MCS (e.g. QPSK) with SISO antenna.