Throughput fairness and efficiency of link adaptation techniques in wireless networks

The authors propose and analyse three link adaptation techniques for fairness enhancement. In the first technique, aggregate throughput maximisation with fairness constraint, the authors formulate the fairness problem as a constrained optimisation problem; they try to maximise the aggregate throughp...

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Podrobná bibliografie
Vydáno v:	IET communications Ročník 3; číslo 7; s. 1227 - 1238
Hlavní autoři:	Ahmed, M.H., Yanikomeroglu, H.
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Stevenage Institution of Engineering and Technology 01.07.2009 John Wiley & Sons, Inc
Témata:	Adaptation Aggregates Applied sciences Coding, codes Computational efficiency Constraints Exact sciences and technology Information, signal and communications theory Links Maximum power Modulation, demodulation Operation, maintenance, reliability Optimization Polycarbonates Signal and communications theory Systems, networks and services of telecommunications Telecommunications Telecommunications and information theory Transmission and modulation (techniques and equipments) Performance evaluation Unconstrained optimization Steepest descent method Wireless telecommunication Information rate Equity Information transmission Penalty method Adaptive coding Constrained optimization Degradation Power control Modulation Wireless network Resource management Service quality
ISSN:	1751-8628, 1751-8636
On-line přístup:	Získat plný text
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Popis
Shrnutí:	The authors propose and analyse three link adaptation techniques for fairness enhancement. In the first technique, aggregate throughput maximisation with fairness constraint, the authors formulate the fairness problem as a constrained optimisation problem; they try to maximise the aggregate throughput subject to the throughput fairness constraint. To solve the problem, the authors convert the constrained optimisation problem to an unconstrained optimisation one using the penalty method. The second technique, individual throughput balancing, tries to equalise individual throughput by using a higher throughput level for disadvantaged users and using a lower throughput level for advantaged users. Finally, the third technique, adaptive virtual maximum power constraint, uses virtual maximum power cap. The three proposed techniques are then compared with the three basic link adaptation techniques (PC, ACM, and joint PC and ACM). The three proposed techniques are shown to be able to enhance the fairness with different degrees and with different levels of aggregate throughput degradation.
Bibliografie:	SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 14 ObjectType-Article-1 ObjectType-Feature-2 content type line 23
ISSN:	1751-8628 1751-8636
DOI:	10.1049/iet-com.2008.0234