Siswanto, D, Zhang, LX and Navaie, K (2016) Weighted Sum Throughput Maximization in Heterogeneous OFDMA Networks. In: Vehicular Technology Conference (VTC Spring), 2016 IEEE 83rd. 23rd Vehicular Technology Conference (VTC Spring), 15-18 May 2016 IEEE ISBN 978-1-5090-1698-3
Abstract
We formulate the resource allocation in the downlink of heterogeneous orthogonal frequency division multiple access (OFDMA) networks. Our primary objective is to maximize the system sum throughput subject to service and system constraints, including maximum transmit power, quality of service and per-user subchannel allocation. Due to the intercell interference, the corresponding optimization problem is, in fact, nonconvex, that cannot be solved using standard convex optimization techniques. Here we propose an algorithm based on local search method and use of penalty function to approximate the formulated constrained optimization problem by an unconstrained one. To approximate a global optimal, we set escaping procedure from the critical point based on constraint function conditions. The result shows that the proposed method might achieve optimum conditions by a hybrid of split and shared spectrum allocation. Numerical analysis indicates that the proposed algorithm outperform the other conventional methods in the scenario of the high level of inter-cell interference. Moreover, the proposed method approximates the global optimum by considering both channel gain and inter-cell interference with a fast rate of convergence.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. |
Keywords: | Resource management, Optimization, Interference, Throughput, Quality of service, OFDM, Macrocell networks |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Institute of Communication & Power Networks (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 18 Oct 2016 14:58 |
Last Modified: | 17 Jan 2018 11:10 |
Published Version: | http://dx.doi.org/10.1109/VTCSpring.2016.7504531 |
Status: | Published |
Publisher: | IEEE |
Identification Number: | 10.1109/VTCSpring.2016.7504531 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:98318 |