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Survey on Cooperative Relay Selection Approaches

Nimmi Krishna M.R, Shiras S. N
2016 IOSR Journal of Electronics and Communication Engineering  
In this article a new research direction for cognitive radio networks by utilizing cooperative relay to assist transmission and improve communication efficiency.  ...  Observing the spectrum resources can be matched to traffic demand of secondary users with the help of relay node.  ...  With the introduction of cooperative relaying, a special attention is required for relay selection since it has a strong impact on network and transmission performance.  ... 
doi:10.9790/2834-1104022735 fatcat:jx6ozlphorbcbof2h6vp2urz2u

Survey on Relay and Beam forming Spectrum Sharing Cognitive Radio Networks

V. Bindusri
2016 International Journal Of Engineering And Computer Science  
To improve the efficiency of spectrum sensing we propose a cooperative communication scheme based on cognitive relaying.  ...  of the cognitive radio network.  ...  Impact of number of co-operating relay nodes on optimal sensing time is estimated. In cooperative spectrum sensing, the relay stations are introduced in the CR network.  ... 
doi:10.18535/ijecs/v5i9.25 fatcat:blbgg64xfjcnlii3cnb2tmzjj4

Distributed resource allocation in cognitive and cooperative ad hoc networks through joint routing, relay selection and spectrum allocation

Lei Ding, Tommaso Melodia, Stella N. Batalama, John D. Matyjas
2015 Computer Networks  
Cooperative relaying and dynamic-spectrum-access/cognitive techniques are promising solutions to increase the capacity and reliability of wireless links by exploiting the spatial and frequency diversity  ...  We study the problem of network throughput maximization in cognitive and cooperative ad hoc networks through joint optimization of routing, relay assignment and spectrum allocation.  ...  Performance evaluation The impact of transmission strategies on single link performance In this section, we study the impact of relay node location and transmission strategies on the performance of direct  ... 
doi:10.1016/j.comnet.2015.02.027 fatcat:h3wkzip3prgolda5i56cyd3bbu

Relay Based Cooperative Spectrum Sensing in Cognitive Radio Networks

Saman Atapattu, Chintha Tellambura, Hai Jiang
2009 GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference  
In this paper 1 , we exploit cooperative spectrum sensing technique for applications in a relay based cognitive radio network.  ...  Index Terms-Cognitive radio, cooperative spectrum sensing, energy detection, relay.  ...  Cooperative Scheme We consider a relay-based spectrum sensing. A number, n, of cognitive relays (named r 1 , r 2 , ..., r n ) are added in the cognitive radio network, as shown in Fig. 1 .  ... 
doi:10.1109/glocom.2009.5425802 dblp:conf/globecom/AtapattuTJ09 fatcat:6bbj4sqah5gf7dzxawxgav5gyy

Distributed Routing, Relay Selection, and Spectrum Allocation in Cognitive and Cooperative Ad Hoc Networks

Lei Ding, Tommaso Melodia, Stella N. Batalama, John D. Matyjas
2010 2010 7th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON)  
Throughput maximization is a key challenge in cognitive radio ad hoc networks, where the availability of local spectrum resources may change from time to time and hopby-hop.  ...  To achieve this objective, cooperative transmission is a promising technique to increase the capacity of relay links by exploiting spatial diversity without multiple antennas at each node.  ...  As an alternative, we propose a cooperative MAC for cognitive radio networks (CoCogMAC), which aims at providing nodes with accurate spectrum information based on a combination of physical sensing and  ... 
doi:10.1109/secon.2010.5508267 dblp:conf/secon/DingMBM10 fatcat:pup33i444jdlrb5oopxfrynswm

Cooperation in 5G HetNets: Advanced Spectrum Access and D2D Assisted Communications [article]

Georgios I. Tsiropoulos, Animesh Yadav, Ming Zeng, Octavia A. Dobre
2017 arXiv   pre-print
Specifically, collaboration for spectrum access is explored for both FD- and cognitive-based approaches, and cooperation among devices is discussed in the context of the state-of-the-art D2D assisted communication  ...  The presented cooperative framework is expected to advance the understandings of the critical technical issues towards dynamic spectrum management for 5G heterogeneous networks.  ...  ACKNOWLEDGMENT This work has been supported in part by the Natural Sciences and Engineering Research Council of Canada (NSERC), though its Discovery program.  ... 
arXiv:1708.03984v1 fatcat:572iqgzteneqzghomagr6ssv7y

Survey on Relay Selection Techniques in Cognitive Networks

2016 IRA-International Journal of Technology & Engineering (ISSN 2455-4480)  
This paper offers a summary of cognitive radio, the significance of relaying network and the algorithm of relay selection.</p></div>  ...  <div><p class="Abstract">Cognitive radio holds great promise as a research area nowadays. By increasing the spectral efficiency, it is applicable to various areas where spectrum is a rare resource.  ...  Spectrum sensing A crucial requirement of the CR network to sense empty spectrum is to perceive vacant spectrum and sharing it, without damaging interference to other users.  ... 
doi:10.21013/jte.v4.n1.p8 fatcat:hxx3aj3zpbdwthmcclgx2gpqpu

Channel allocation for cooperative relays in cognitive radio networks

Guodong Zhao, Chenyang Yang, Geoffrey Ye Li, Dongdong Li, Anthony Soong
2010 2010 IEEE International Conference on Acoustics, Speech and Signal Processing  
Different from conventional cooperative relay channels, cognitive radio relay channels are actually a combination of three kinds of channels: direct, dual-hop, and relay channels, which belong to different  ...  In this paper, we investigate channel allocation for cooperative relays in cognitive radio networks.  ...  The impact of the sensing errors is out of the scope of this paper.  ... 
doi:10.1109/icassp.2010.5496040 dblp:conf/icassp/ZhaoYLLS10 fatcat:ietr2pgdyzdrtapiel2xcjhugu

Cognitive Radio Enhancements for Legacy Networks Using Cooperative Diversity

Zhanwei Sun, Ioannis Krikidis, J. Nicholas Laneman, John S. Thompson
2009 GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference  
The enhancement of the primary network with cooperative diversity in addition to the well-known diversity gain for the primary link improves the sensing ability of the system and protects the primary user  ...  In this type of network, primary destinations are not able to deal with possible interference and a missed cognitive detection significantly reduces the system performance.  ...  Fig. 3 shows the impact of the relay behavior on the outage performance of the primary link under the four scenarios mentioned above.  ... 
doi:10.1109/glocom.2009.5425379 dblp:conf/globecom/SunKLT09 fatcat:mkqsobdnhzfvrbusq23mgcskha

Cooperative Relay in Cognitive Radio Networks: Decode-and-Forward or Amplify-and-Forward?

Donglin Hu, Shiwen Mao
2010 2010 IEEE Global Telecommunications Conference GLOBECOM 2010  
The considerable gaps between the cooperative relay results and the direct link results exemplify the diversity gain achieved by cooperative relays in CR networks.  ...  Cognitive radios (CR) and cooperative communications represent new paradigms that both can effectively improve the spectrum efficiency of future wireless networks.  ...  ACKNOWLEDGMENT This work is supported in part by the NSF under Grants ECCS-0802113, IIP-0738088 and IIP-1032002.  ... 
doi:10.1109/glocom.2010.5683652 dblp:conf/globecom/HuM10 fatcat:6nmjnys7bvfplnr6l7n25bou6y

Techniques for Cooperative Cognitive Radio Networks [article]

Ramy Amer
2018 arXiv   pre-print
More specifically, we introduce two collaborative cognitive radio networks in which the secondary user cooperate with the primary user to deliver the data of the primary user.  ...  In this thesis, we focus on spectrum sharing techniques in cognitive radio network where there is a number of secondary users sharing unoccupied spectrum holes.  ...  The Cooperation works as follows: a packet is delivered to the primary destination either through a direct link or through cooperative relaying by intermediate secondary user.  ... 
arXiv:1808.08950v1 fatcat:n7qen6u3srdvtghmfd2k26koie

On Cooperative Relay in Cognitive Radio Networks

Donglin Hu, Shiwen Mao
2013 EAI Endorsed Transactions on Mobile Communications and Applications  
The significant gaps between the cooperative relay results and the direct link results exemplify the diversity gain achieved by cooperative relays in CR networks.  ...  In particular, we focus on the two representative cooperative relay strategies, decode-and-forward (DF) and amplify-and-forward (AF), and develop optimal spectrum sensing and p-Persistent CSMA for spectrum  ...  We assume a primary network with multiple licensed bands and a CR network consisting of multiple cooperative relay links.  ... 
doi:10.4108/mca.1.3.e3 fatcat:7br47ynqlrflxee4v5kuro5cmm

Cooperative Relay for Cognitive Radio Networks

J. Jia, J. Zhang, Q. Zhang
2009 IEEE INFOCOM 2009 - The 28th Conference on Computer Communications  
Observing that spectrum resource can be better matched to traffic demand of secondary users with the help of relay node that has rich spectrum resource, in this paper we exploit a new research direction  ...  for cognitive radio networks by utilizing cooperative relay to assist the transmission and improve spectrum efficiency.  ...  Therefore, in this section, we move on to a network perspective: how secondary nodes in a cognitive network with cooperative relays coordinate with each other to allocate the relay and spectrum resource  ... 
doi:10.1109/infcom.2009.5062156 dblp:conf/infocom/JiaZZ09 fatcat:cdtdbwpdyzgs7fqh7gbevu3lti

Effect of Primary Network on Performance of Spectrum Sharing System over Nakagami-m Fading Channel

Fahim Khan, Taimour Khan, Muhammad Fahad
2018 Journal of Electrical Engineering & Electronic Technology  
Here, we consider the impact of the primary transmitter on the spectrum sharing system in the presence of a Nakagami-m fading channel, where the fading parameter m (m is an integer) can be used to deal  ...  Under limited spectrum conditions, spectrum sharing relay networks have gained much popularity by providing reliability over direct transmission.  ...  Acknowledgements Our gratitude to Almighty God, the most merciful and the most gracious, who provided us strength and guidance to complete this thesis.  ... 
doi:10.4172/2325-9833.1000167 fatcat:745wdqp3uvgqvbmaxsfcaekmja

Cognitive Non-Orthogonal Multiple Access with Cooperative Relaying: A New Wireless Frontier for 5G Spectrum Sharing [article]

Lu Lv, Jian Chen, Qiang Ni, Zhiguo Ding, Hai Jiang
2018 arXiv   pre-print
In this article, we investigate the integration of NOMA with CR into a holistic system, namely cognitive NOMA network, for more intelligent spectrum sharing.  ...  Furthermore, we discuss open challenges and future research directions on implementation of cognitive NOMA networks.  ...  There are other promising directions in the field of relay sharing cooperative overlay NOMA networks.  ... 
arXiv:1801.04022v1 fatcat:i35md76srnhalm6e5qouuq656i
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