... pagesdoi:10.1155/2011/941350Research Article Throughput Gain Using Threshold-Based Multiuser Scheduling in WiMAX OFDMAAhmed Iyanda SulymanDepartment of Electrical Engineering, College of Engineering, King Saud University, ... Wireless Communications and Networking 5 Using (1), (7), (9), (11), and (16), we obtain an expressionfor the throughput gain using threshold-based scheduling asλGain=ln=1⎛⎝(n− 1)!1γn+1⎛⎝Ln⎞⎠·n−1k=1⎡⎣γ2kn−1l=1,l/= ... enhancementsestimated in the analysis are less than what would beobtained in practice using threshold-based scheduling in WiMAX OFDMA, as shown later in the simulation results in Section 3.For...