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Adaptive relaying scheme for cognitive radio networks
2013
IET Communications
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In this study, the authors propose and investigate an adaptive relay-based cooperation scheme for CR networks that improves the secondary outage performance, while respecting a primary outage probability ...
Cognitive radio (CR) systems allow unlicensed secondary users to transmit on the licensed frequency bands without degrading the licensed primary transmissions. ...
Results show that cognitive relaying is efficient in enhancing the secondary throughput under certain network topology conditions. ...
doi:10.1049/iet-com.2012.0709
fatcat:zuhmk2vwvrasdmgymjqkksfnmi
Cognitive Relay Networks: A Comprehensive Survey
2015
EAI Endorsed Transactions on Wireless Spectrum
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In cognitive radio network, secondary users dynamically senses to the local environment for available spectrum. ...
We also provide a detailed review on existing schemes in cognitive relay networks on the basis of relaying protocol, relay cooperation and channel model. must continuously sense the available spectrum ...
Cooperative relaying techniques used in cognitive radio networks can be used to improve spectrum sharing [23]
Amplify-and-Forward Relaying Schemes in CRN AF relaying scheme applied in CRN for achieving ...
doi:10.4108/ws.2015.3.e5
fatcat:23jwunrbzvbwfnul2a2o22figi
Adaptive Cooperation for Bidirectional Communication in Cognitive Radio Networks
2017
KSII Transactions on Internet and Information Systems
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In this paper, we propose an adaptive cooperation scheme in the interweave cognitive networks to improve the performance of the cognitive user transmissions. ...
In the proposed scheme for the bidirectional communication of two end-source cognitive users, the bidirectional communication is completed through the non-relay direct transmission, the one-way relaying ...
An adaptive two-way relaying scheme for overlay cognitive radio networks is investigated in [21] , where a two-way relay switches between DF and AF depending on whether it can successfully decode its ...
doi:10.3837/tiis.2017.03.002
fatcat:2otv4bm2l5c4zoeb4sodza7cpa
An Adaptive Cooperation Diversity Scheme With Best-Relay Selection in Cognitive Radio Networks
2010
IEEE Transactions on Signal Processing
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In this paper, an adaptive cooperation diversity scheme with best-relay selection is proposed for multiple-relay cognitive radio networks to improve the performance of secondary transmissions while ensuring ...
In addition, we generalize the traditional definition of the diversity gain, which can not be applied directly in cognitive radio networks since mutual interference between the primary and secondary users ...
ACKNOWLEDGMENT The authors are grateful to the anonymous reviewers for their valuable comments and constructive suggestions that have indeed helped improve this paper significantly. ...
doi:10.1109/tsp.2010.2053708
fatcat:pf5ttvtmlbfmtlxuiifmhbcjza
2013 Index
2014
IEEE Transactions on Wireless Communications
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The Author Index contains the primary entry for each item, listed under the first author's name. ...
Cognitive Radio Networks. ...
Zheng, Gan, +, TWC May 2013 2498-2511 Impact of Primary User Traffic on Adaptive Transmission for Cognitive Radio with Partial Relay Selection. ...
doi:10.1109/twc.2011.09.499-tw1401-index
fatcat:w5ya5mg3sbcodb2crtuaoyk3su
Cognition and Cooperation in Advanced Wireless and Mobile Information Systems
2016
Mobile Information Systems
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An open-source distributed virtual platform called cognitive privacy framework is proposed, in which each personal cloud may decide on the fly to use different transmission network for different types ...
Radenkovic addresses the problem of "cognitive privacy" in the mobile social world. ...
Zhang et al. develop a rankconstrained beamforming algorithm for underlay multipleinput multiple-output (MIMO) cognitive radio networks. ...
doi:10.1155/2016/5404986
fatcat:dronsmawuzd2xla7q4l6bqwtp4
Special issue on multi-terminal information theory
2013
International Journal of Advances in Engineering Sciences and Applied Mathematics
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operate under some cognitive radio scenarios. ...
Recent results on physical layer network coding schemes for two-way and three-way relaying are reviewed and open problems in the multiway scenario are presented. ...
operate under some cognitive radio scenarios. ...
doi:10.1007/s12572-013-0085-3
fatcat:uxhdwmsjljh4pbmymajetfhyy4
Adaptive relaying strategies for collaborative spectrum sensing
2010
Proceedings of the 5th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications
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We analyze and compare the performance of two adaptive relaying schemes based on the amplify-and-forward and the decode-and-forward protocols which are employed to improve the performance of collaborative ...
As our results show, the proposed schemes allow us to improve the reliability of the communication part of the wireless sensor network. ...
In this paper we focus on communication aspects of wireless sensor networks (WSNs) which are employed for spectrum sensing for cognitive radio systems [2] . ...
doi:10.4108/icst.crowncom2010.9263
dblp:conf/crowncom/FouillotMT10
fatcat:aknrsgxruvgx5bsht3qg65g4jm
Cooperative Communications for Wireless Ad Hoc and Sensor Networks
2013
International Journal of Distributed Sensor Networks
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of cognitive radio networks. ...
e paper "Cooperative transmission in cognitive radio ad hoc networks, " by J. Jia S. ...
of cognitive radio networks. ...
doi:10.1155/2013/161268
fatcat:tj7lh3xqbrbrtgykegreuy57me
A Genetic Algorithm Based Spectrum Sharing Strategy Using Energy Efficient Clustering for Cooperative CR Networks
English
2015
International Journal of Engineering Trends and Technoloy
English
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This proposed work reduce the power consumption, increase the network throughput, network's life time and reduce the end to end delay of cognitive radio network as compare to traditional clustering based ...
Cognitive radio is emerging as a promising technique to improve the utilization of radio frequency spectrum. ...
As network life time will increase which will also increase the network throughput and reduces end to end delay. ...
doi:10.14445/22315381/ijett-v21p222
fatcat:shgwpxm3szdvjfgj4fejo4deji
A Survey On Cooperative Diversity And Its Applications In Various Wireless Networks
2011
International Journal of Computer Science & Engineering Survey
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Cooperative diversity is a technique in which various radio terminals relay signals for each other. ...
KEYWORDS Wireless communication system, cooperative diversity, cognitive radio (CR), wireless sensor networks, IEEE 802.16j. ...
In cognitive radio we have shown the benefits of cooperation in increasing the agility of cognitive radio networks. ...
doi:10.5121/ijcses.2011.2410
fatcat:m3ug7lkumbeyzkdl6zoxmta7tu
Survey on Cooperative Relay Selection Approaches
2016
IOSR Journal of Electronics and Communication Engineering
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In this article a new research direction for cognitive radio networks by utilizing cooperative relay to assist transmission and improve communication efficiency. ...
Cognitive radio has been proposed in order to promote spectrum utilization by exploiting the spectrum holes. ...
Introduction Cognitive radio is an emerging technology for future radio networks [1, 2] , which enables an unlicensed cognitive user to recognize or to sense the spectrum and access a spectrum hole that ...
doi:10.9790/2834-1104022735
fatcat:jx6ozlphorbcbof2h6vp2urz2u
Power and Time Slot Allocation in Cognitive Relay Networks Using Particle Swarm Optimization
2013
The Scientific World Journal
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adaption of time slots, and as a result a new scheme for joint power and time slot allocation in cognitive relay networks is proposed. ...
The two main problems in cognitive radio networks are power and time slot allocation problems which require a precise analysis and guarantee the quality of service in both the primary and secondary users ...
In [5] , a relay scheme has been used 2 The Scientific World Journal for balancing the traffic requests and available spectrum resources in cognitive radio. ...
doi:10.1155/2013/424162
pmid:24228002
pmcid:PMC3817652
fatcat:fd4mc5ywyba6bhyyaq4p2g63c4
Power efficiency maximization based on cognitive relay transmission
2012
7th International Conference on Communications and Networking in China
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in cognitive radio networks. ...
In addition, we propose to investigate power efficiency of cognitive relay transmission scheme based on that of non-relay transmission. ...
Figure 1 . 1 Coexistence of a primary wireless network and a cognitive relay network τ T τ −
Figure 2 . 2 Frame structure for cognitive radio networksA. ...
doi:10.1109/chinacom.2012.6417524
dblp:conf/chinacom/SongFT12
fatcat:xy2n2jnxcbarhifdclk7l7g6ea
Cognitive and cooperative communications in wireless heterogeneous networks (HetNet): Current status and technical perspectives
2012
2012 IEEE International Conference on Wireless Information Technology and Systems (ICWITS)
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Cognitive network and cooperative communications are two promising techniques for efficient utilization of scarce radio resources and guaranteeing quality of services (QoS) in wireless heterogeneous networks ...
Based on the proposed architecture several techniques related to the integration of cognition and cooperation are evaluated in typical cases and scenarios, for example, cognitive relay network, cognition ...
Inspired by cognitive radio and relay assisted cooperative communication, the authors in [7] proposed the cognitive relay network which combines cognitive radio technique and relay assisted cooperative ...
doi:10.1109/icwits.2012.6417787
fatcat:upo4o4iffzhahhcvbkjvgaow7a
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