NDLI: Weighted sum throughput maximisation for cooperative relay-aided multi-cell orthogonal frequency division multiple access cellular networks considering partial fairness

Content Provider	IET Digital Library
Author	Moghaddam, Mohammad Hossein pour, Kamal Mohamed Andargoli, Seyed Mehdi Hosseini
Abstract	This study addresses resource allocation problem with partial fairness, considering weighted sum throughput maximisation for an orthogonal frequency-division multiple access system with half-duplex decode-and-forward relaying. In the system formulation, multi-cell co-channel interference as one of the critical factors in multi-cell processing has been taken into account and its effect on system performance is evaluated. It has been shown that the problem is in the form of combinatorial non-convex optimisation problems (NP-hard). Avoiding to solve NP-hard problem, the authors have made suboptimal solutions according to iterative methods to satisfy the system requirements in the best way. In this way, the resulting non-convex optimisation problem has been solved by dual Lagrangian decomposition, and iterative resource allocation algorithms are proposed to find solutions which satisfy Karush–Kuhn–Tucker conditions. Two resource allocation strategies based on centralised and distributed scenarios are derived to maximise the average system throughput (bit/s/Hz) considering partial fairness. Simulation results indicate that the authors’ proposed methods work better than interference threshold methods and other conventional algorithms such as single cell methods which use local information processing.
Starting Page	778
Ending Page	789
Page Count	12
ISSN	17518628
Volume Number	10
e-ISSN	17518636
Issue Number	Issue 7, May (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/10/7
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2015.0549
Journal	IET Communications
Publisher Date	2016-05-05
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Cellular Radio Combinatorial Mathematics Combinatorial Nonconvex Optimisation Problem Convex Programming Cooperative Relay Aided Multicell Orthogonal Frequency Division Multiple Access Cellular Network Decode And Forward Communication Dual Lagrangian Decomposition Electromagnetic Compatibility Half-duplex Decode-and-forward Relaying Interference Interpolation And Function Approximation Iterative Method Karush-Kuhn-Tucker Condition Mobile Radio System Modulation And Coding Method Multicell Cochannel Interference Nonconvex Optimisation Problem NP-hard Problem Numerical Analysis OFDM Modulation Optimisation Technique Partial Fairness Radio Frequency Interference Resource Allocation Problem Weighted Sum Throughput Maximisation
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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