الفهرس 
WiMAX Networks ElementsOnly 14 pages are availabe for public view
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Abstract
Jitter-Weighted Channel-Unaware algorithm (JCU) is a channel-unaware uplink algorithm designed based on a dynamic weight function for fixed WiMAX networks. It has advantages of conceptual soundness and computational simplicity.JCU weight function is formulated as the sum of the respective contributions of the QoS parameters: throughput, delay, and jitter. The inclusion of jitter is the essential modification that results in a more comprehensive weight function. JCU is compared with WRR and MDRR. The results indicate that JCU outperforms the other two, with respect to WiMAX throughput, delay, and jitter as function of number of subscriber stations.Jitter-Weighted Channel-Aware algorithm (JCA) is a channel-aware algorithm which has four-term weight function: throughput, delay, jitter, and channel quality. The channel quality is particularly important in scheduler decision in wireless networks for the determination of channel strength. A performance comparison is presented between JCA and both PFS and Max C/I. The simulation results reveal that JCA exceeds the other two algorithms with respect to WiMAX delay and jitter as function of number of subscriber stations. However, the WiMAX throughput takes on a slightly lower value.A performance study of the two proposed algorithms on two real-time applications is also presented. We consider video conferencing and high quality video. The delay and jitter of the applications are used as performance indicators. The results demonstrate that both of our schedulers enjoy the smallest values of jitter and delay for both applications when the number of subscriber stations increased.