Energy Efficient Power Allocation for Bidirectional Relaying with Imperfect Channel Estimation

Energy Efficient Power Allocation for Bidirectional Relaying with Imperfect Channel Estimation

A wireless network scenario of bidirectional relaying with imperfect channel side information (CSI) is considered, in which two source nodes intend to exchange information with the help of one relay. The power allocation problem is investigated to minimize the total transmit power subject to constra...

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Main Authors: Song Li, Yanjing Sun, Hongli Xu, Zhi Sun, Wenjuan Shi
Format: Article
Language:English
Published: SAGE Publishing 2013-11-01
Series:International Journal of Distributed Sensor Networks
Online Access:https://doi.org/10.1155/2013/725459
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spelling doaj-6990693cc3b14edd9d773d1964fc9dd52020-11-25T03:24:08ZengSAGE PublishingInternational Journal of Distributed Sensor Networks1550-14772013-11-01910.1155/2013/725459725459Energy Efficient Power Allocation for Bidirectional Relaying with Imperfect Channel EstimationSong Li0Yanjing Sun1Hongli Xu2Zhi Sun3Wenjuan Shi4 School of Information and Electrical Engineering, China University of Mining and Technology, Xuzhou 221113, China School of Information and Electrical Engineering, China University of Mining and Technology, Xuzhou 221113, China Department of Computer Science and Technology, University of Science and Technology of China, Hefei, Anhui 230027, China Department of Electrical Engineering, State University of New York (SUNY) at Buffalo, Buffalo, NY 14260, USA School of Information and Electrical Engineering, China University of Mining and Technology, Xuzhou 221113, ChinaA wireless network scenario of bidirectional relaying with imperfect channel side information (CSI) is considered, in which two source nodes intend to exchange information with the help of one relay. The power allocation problem is investigated to minimize the total transmit power subject to constraints on two source nodes' received signal-to-noise-ratios (SNRs). The best relay that minimizes the total transmit power is selected in a multiple relay network. We also present outage analysis when the proposed power allocation is adopted, and a close-form approximation of outage probability is obtained by shrinking the integral interval. Simulation results show that the total transmit power can be substantially decreased and the outage probability is significantly decreased by the proposed power allocation scheme when two source nodes have different QoS requirement.https://doi.org/10.1155/2013/725459
collection DOAJ
language English
format Article
sources DOAJ
author Song Li
Yanjing Sun
Hongli Xu
Zhi Sun
Wenjuan Shi
spellingShingle Song Li
Yanjing Sun
Hongli Xu
Zhi Sun
Wenjuan Shi
Energy Efficient Power Allocation for Bidirectional Relaying with Imperfect Channel Estimation
International Journal of Distributed Sensor Networks
author_facet Song Li
Yanjing Sun
Hongli Xu
Zhi Sun
Wenjuan Shi
author_sort Song Li
title Energy Efficient Power Allocation for Bidirectional Relaying with Imperfect Channel Estimation
title_short Energy Efficient Power Allocation for Bidirectional Relaying with Imperfect Channel Estimation
title_full Energy Efficient Power Allocation for Bidirectional Relaying with Imperfect Channel Estimation
title_fullStr Energy Efficient Power Allocation for Bidirectional Relaying with Imperfect Channel Estimation
title_full_unstemmed Energy Efficient Power Allocation for Bidirectional Relaying with Imperfect Channel Estimation
title_sort energy efficient power allocation for bidirectional relaying with imperfect channel estimation
publisher SAGE Publishing
series International Journal of Distributed Sensor Networks
issn 1550-1477
publishDate 2013-11-01
description A wireless network scenario of bidirectional relaying with imperfect channel side information (CSI) is considered, in which two source nodes intend to exchange information with the help of one relay. The power allocation problem is investigated to minimize the total transmit power subject to constraints on two source nodes' received signal-to-noise-ratios (SNRs). The best relay that minimizes the total transmit power is selected in a multiple relay network. We also present outage analysis when the proposed power allocation is adopted, and a close-form approximation of outage probability is obtained by shrinking the integral interval. Simulation results show that the total transmit power can be substantially decreased and the outage probability is significantly decreased by the proposed power allocation scheme when two source nodes have different QoS requirement.
url https://doi.org/10.1155/2013/725459
work_keys_str_mv AT songli energyefficientpowerallocationforbidirectionalrelayingwithimperfectchannelestimation
AT yanjingsun energyefficientpowerallocationforbidirectionalrelayingwithimperfectchannelestimation
AT honglixu energyefficientpowerallocationforbidirectionalrelayingwithimperfectchannelestimation
AT zhisun energyefficientpowerallocationforbidirectionalrelayingwithimperfectchannelestimation
AT wenjuanshi energyefficientpowerallocationforbidirectionalrelayingwithimperfectchannelestimation
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