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Article
A Performance Study of Wireless Broadband Access (WiMAX)

Author: Maan A. S. Al-Adwany
Journal: Iraqi Journal for Electrical And Electronic Engineering المجلة العراقية للهندسة الكهربائية والالكترونية ISSN: 18145892 Year: 2011 Volume: 7 Issue: 2 Pages: 125-129
Publisher: Basrah University جامعة البصرة

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Abstract

WiMAX (worldwide interoperability for microwaveaccess) is one of the wireless broadband access technologies whichsupplies broadband services to clients, but it surpasses othertechnologies by its coverage area, where one base station cancover a small city. In this paper, WiMAX technology is studied byexploring its basic concepts, applications, and advantages /disadvantages. Also a MATLAB simulator is used to verify theoperation of the WiMAX system under various channelimpairments and for variety of modulation schemes. From thesimulation results, we found that WiMAX system works well inboth AWGN and multipath fading channels, but under certainconstraints that are addressed in this paper.

Keywords

WiMAX --- IEEE 802.16 --- simulation


Article
IEEE 802.16 E&M SYSTEMS BANDWIDTH RESOURCE ALLOCATION PERFORMANCE INVESTIGATION

Author: Ghassan Amanuel. H. QasMarrogy
Journal: Journal of Engineering and Sustainable Development مجلة الهندسة والتنمية المستدامة ISSN: 25200917 Year: 2019 Volume: 23 Issue: 4 Pages: 155-169
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

This paper concentrates on the downlink resource allocation strategy for the bandwidth in Mobile WiMAX system based on IEEE802.16E and IEEE802.16M standards. Most of the recent algorithms deal with giving higher priority to the applications that have higher delay tolerance known as real-time applications. While the applications using the non-real time doesn’t have enough priority or interest. still, the real-time applications should have a higher priority than the non-real time applications to be served first. In this paper, a higher priority and QoS (quality of services) will be given to the real-time applications while the applications for the non-real time will be helped to give some fairness to decrease the dropping packets without starving. It will be done by merging two major technologies (minimum resource allocation and round robin manner. Also, a comparison will be done between the IEEE802.16E and IEEE802.16M systems to evaluate the system throughput, the resource allocation, the average end-to-end delay, and the data packet dropping to demonstrate the affecting algorithm of the entire system. Finally, the paper will demonstrate that the total system will be enhanced by reducing the nonefficient dropping packets. As a result, it will simulate and verify that there is lesser packet drop in the applications of real and non-real time. therefore, every single service and the total system throughput will be enhanced.

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