A novel utility function for energy-efficient power control game in cognitive radio networks.
Spectrum scarcity is a major challenge in wireless communications systems requiring efficient usage and utilization. Cognitive radio network (CRN) is found as a promising technique to solve this problem of spectrum scarcity. It allows licensed and unlicensed users to share the same licensed spectrum...
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doaj-e203fe3bae70452fafa2c1a6c867bf942020-11-25T02:04:35ZengPublic Library of Science (PLoS)PLoS ONE1932-62032015-01-01108e013513710.1371/journal.pone.0135137A novel utility function for energy-efficient power control game in cognitive radio networks.Yousef Ali Al-GumaeiKamarul Ariffin NoordinAhmed Wasif RezaKaharudin DimyatiSpectrum scarcity is a major challenge in wireless communications systems requiring efficient usage and utilization. Cognitive radio network (CRN) is found as a promising technique to solve this problem of spectrum scarcity. It allows licensed and unlicensed users to share the same licensed spectrum band. Interference resulting from cognitive radios (CRs) has undesirable effects on quality of service (QoS) of both licensed and unlicensed systems where it causes degradation in received signal-to-noise ratio (SIR) of users. Power control is one of the most important techniques that can be used to mitigate interference and guarantee QoS in both systems. In this paper, we develop a new approach of a distributed power control for CRN based on utility and pricing. QoS of CR user is presented as a utility function via pricing and a distributed power control as a non-cooperative game in which users maximize their net utility (utility-price). We define the price as a real function of transmit power to increase pricing charge of the farthest CR users. We prove that the power control game proposed in this study has Nash Equilibrium as well as it is unique. The obtained results show that the proposed power control algorithm based on a new utility function has a significant reduction in transmit power consumption and high improvement in speed of convergence.http://europepmc.org/articles/PMC4530935?pdf=render |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yousef Ali Al-Gumaei Kamarul Ariffin Noordin Ahmed Wasif Reza Kaharudin Dimyati |
spellingShingle |
Yousef Ali Al-Gumaei Kamarul Ariffin Noordin Ahmed Wasif Reza Kaharudin Dimyati A novel utility function for energy-efficient power control game in cognitive radio networks. PLoS ONE |
author_facet |
Yousef Ali Al-Gumaei Kamarul Ariffin Noordin Ahmed Wasif Reza Kaharudin Dimyati |
author_sort |
Yousef Ali Al-Gumaei |
title |
A novel utility function for energy-efficient power control game in cognitive radio networks. |
title_short |
A novel utility function for energy-efficient power control game in cognitive radio networks. |
title_full |
A novel utility function for energy-efficient power control game in cognitive radio networks. |
title_fullStr |
A novel utility function for energy-efficient power control game in cognitive radio networks. |
title_full_unstemmed |
A novel utility function for energy-efficient power control game in cognitive radio networks. |
title_sort |
novel utility function for energy-efficient power control game in cognitive radio networks. |
publisher |
Public Library of Science (PLoS) |
series |
PLoS ONE |
issn |
1932-6203 |
publishDate |
2015-01-01 |
description |
Spectrum scarcity is a major challenge in wireless communications systems requiring efficient usage and utilization. Cognitive radio network (CRN) is found as a promising technique to solve this problem of spectrum scarcity. It allows licensed and unlicensed users to share the same licensed spectrum band. Interference resulting from cognitive radios (CRs) has undesirable effects on quality of service (QoS) of both licensed and unlicensed systems where it causes degradation in received signal-to-noise ratio (SIR) of users. Power control is one of the most important techniques that can be used to mitigate interference and guarantee QoS in both systems. In this paper, we develop a new approach of a distributed power control for CRN based on utility and pricing. QoS of CR user is presented as a utility function via pricing and a distributed power control as a non-cooperative game in which users maximize their net utility (utility-price). We define the price as a real function of transmit power to increase pricing charge of the farthest CR users. We prove that the power control game proposed in this study has Nash Equilibrium as well as it is unique. The obtained results show that the proposed power control algorithm based on a new utility function has a significant reduction in transmit power consumption and high improvement in speed of convergence. |
url |
http://europepmc.org/articles/PMC4530935?pdf=render |
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