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Mohammad Fathi

Mohammad Fathi

Academic rank: Associate Professor
ORCID:
Education: PhD.
ScopusId: 56694062400
Faculty: Faculty of Engineering
Address: Department of Electrical Engineering
Phone:

Research

Title
Utility Maximization in Channel-Aware and Queue-Aware OFDMA Scheduling Based on Arrival Rate Control
Type
JournalPaper
Keywords
Channel-Aware Queue-Aware scheduling, OFDMA, rate control, resource allocation, and utility maximization
Year
2012
Journal IET Communications
DOI
Researchers Mohammad Fathi ، Hassan Taheri ، Mehri Mehrjoo

Abstract

A channel-aware and queue-aware (CAQA) scheduling scheme is proposed for the downlink of orthogonal frequency division multiple access (OFDMA) networks. The scheduling scheme cooperates with a rate control policy, which controls arrival rates to the base station queues. The network resource allocation is formulated as a utility maximisation problem, which is decomposed into a CAQA OFDMA scheduling problem and a rate control problem. The authors decompose the scheduling problem into subproblems of rate allocation to subcarriers and propose a joint subcarrier assignment and rate allocation (JSARA) solution for the problem. Simulation is conducted to evaluate the performance of JSARA in terms of throughput, queue length and dropping probability. In addition, JSARA performance gain in allocating users’ arrival rates and achieved .aggregate utility, in cooperation with a rate control policy, is investigated