Resource Allocation Algorithm for Improving Performance of the OFDMA Based Connection Oriented Networks

  • Md Nazmus Saadat UNIVERSITI PUTRA MALAYSIA
  • Borhanuddin Mohd Ali Faculty of Engineering, University Putra Malaysia, Serdang, 43300, Selangor, MY
  • Aduwati Sali Faculty of Engineering, University Putra Malaysia, Serdang, 43300, Selangor, MY
  • Raja Syamsul Azmir Raja Abdullah Faculty of Engineering, University Putra Malaysia, Serdang, 43300, Selangor, MY
  • Hafizal Mohamad MIMOS Berhad, Technology Park Malaysia 57000,
Keywords: OFDMA, Resource Allocation, Radio Resource, Connection Oriented Networks, Wireless Networks, Algorithms, Graphs, QualNet, Cross Layer.

Abstract

To enhance network performance, PHY and MAC layer has direct influence besides other factors as these are major layers of OSI based communication system. One way of enhancing network performance is the managing the radio resources intelligently. As cross layer based systems might be faster responding in case of network resource distribution and due to the spectrum limitation for commercial use, there are active researches in this area that targets to enhance the network users’ experience, though RA might be considered as an evergreen topic for all evolving communication systems. This paper aims to focus specifically on how to increase throughput and delay performance leading to overall higher system performance and fairness. We use techniques of graph theoretic tools and optimization mechanism in our solution to improve radio resource allocation. After we optimize the subcarrier allocation using cross layer interaction of mainly MAC and PHY, the final assignment is done along with power allocation to all users. Then we reevaluate each new incoming resource request and use threshold based allocation techniques to cater for more users. Besides showing the performance enhancement we also show the fairness comparison to other existing state of the art research as benchmarking by means of simulation. 

Author Biography

Md Nazmus Saadat, UNIVERSITI PUTRA MALAYSIA

Md. Nazmus Saadat

Department of Computer and Communication Systems Engineering

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Published
2016-01-05