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Sensing Optimization in Cooperative Cognitive Radio Networks

Mahdi Pirmoradian, Olayinka Adigun, Christos Politis
2014 Procedia Computer Science  
Cooperative spectrum sensing is a key function in cognitive radio networks in order to provide unused spectrum access opportunities and mitigate the impact of interference to the primary networks.  ...  In this paper, the sensing time period is optimized to minimize energy consumption in a diverse cooperative network using square law combining decision rule.  ...  To this end, sensing time allocation and optimization is a crucial challenge in cooperative cognitive radio networks and needs to be considered by standardization work groups on cognitive radio technology  ... 
doi:10.1016/j.procs.2014.07.075 fatcat:gjvg4zsanzfq5bh2jwwrm3tlyi

Optimization for Cooperative Sensing in Cognitive Radio Networks

Edward Peh, Ying-Chang Liang
2007 2007 IEEE Wireless Communications and Networking Conference  
In cognitive radio networks, the secondary users can use the frequency bands when the primary users are not present. Hence secondary users need to constantly sense the presence of the primary users.  ...  After setting one of the probabilities, the other can be optimized through cooperative sensing.  ...  Hence channel sensing is an important aspect of cognitive radio. In channel sensing, two probabilities are of interest.  ... 
doi:10.1109/wcnc.2007.11 dblp:conf/wcnc/PehL07 fatcat:3fusm6x5e5e5tnhmzygiqloarq

Optimal sensing period in cooperative relay cognitive radio networks

2016 KSII Transactions on Internet and Information Systems  
It provides a valuable reference for choosing the optimal spectrum sensing period in cooperative relay cognitive radio networks.  ...  Cooperative relay cognitive radio networks with optimal spectrum sensing period can achieve the high capacity and steady probability of false alarm in different target probability of detection.  ...  This paper only discusses the optimal spectrum sensing period in cooperative cognitive radio network with single relay.  ... 
doi:10.3837/tiis.2016.12.007 fatcat:weawg4vmkvfpbh6puqyctqyfiq

Optimized Cooperative Spectrum-Sensing in Clustered Cognitive Radio Networks

Birsen Sirkeci Mergen, Wafa- Iqbal
2013 International Journal of Wireless & Mobile Networks  
Overall, this work quantifies the advantages of optimal cooperation in primary detection in cognitive radio networks.  ...  In cognitive radio networks, the pertinent task of spectrum sensing at the Secondary Users (SUs) can be achieved when the SUs cooperate in order to make a final decision about the presence of a communicating  ...  In summary, this work shows the importance of optimization in cooperative cognitive radio networks in order to extract the gains of cooperation for spectrum sensing with negligible overhead.  ... 
doi:10.5121/ijwmn.2013.5401 fatcat:6yj52dq5yvhezp3s7wnyuvqldu

Optimal energy-efficient sensing in cooperative cognitive radio networks

Xia Wu, Jin-Ling Xu, Ming Chen, Jun-Bo Wang
2014 EURASIP Journal on Wireless Communications and Networking  
In a cognitive radio network (CRN), when the secondary users (SUs) are battery-powered devices, the concept of energy-efficient design is very important.  ...  The sensing time and the number of cooperative SUs in the cooperative spectrum sensing could greatly affect energy consumption and throughput of the system.  ...  This motivates the advent of cognitive radio network (CRN) which was first introduced in 1999 by J.  ... 
doi:10.1186/1687-1499-2014-173 fatcat:5hiavl7p2vgfpgasnvh4vlt5na

Optimal MAC based cooperative spectrum sensing in cognitive radio networks

Zhong Chen, XianDa Zhang, LanJuan Yang
2012 Science China Information Sciences  
This paper considers a cognitive radio (CR) system in non-ideal fading wireless channels and proposes cooperative spectrum sensing schemes based on coherent multiple access channels (MAC), serving as an  ...  alternative way to improve the cooperative spectrum sensing performance and provide space diversity for spectrum sensing.  ...  Model description and cooperative spectrum sensing We consider that N cooperative SUs are deployed in a CR network, and M samples are used over each observation window.  ... 
doi:10.1007/s11432-012-4568-9 fatcat:75rzojtsq5aa5bofpsg72ddygy

Throughput Optimization for Cooperative Spectrum Sensing in Cognitive Radio Networks

Djamel Teguig, Bart Scheers, Vincent Le Nir
2013 2013 Seventh International Conference on Next Generation Mobile Apps, Services and Technologies  
In this paper, the channel utilization (throughput vs sensing time relationship) is analyzed for cooperative spectrum sensing under different combining rules and scenarios.  ...  A comparison, based on simulations, is conducted between these proposed schemes in both scenarios, in terms of detection performance and throughput capacity of the CR network.  ...  SYSTEM MODEL Consider a cognitive radio network, with K cognitive users (indexed by k = {1, 2. . . K}) to sense the spectrum in order to detect the existence of the PU.  ... 
doi:10.1109/ngmast.2013.50 dblp:conf/ngmast/TeguigSN13 fatcat:boscmkzkdfb7rbrskmwlehnonu

Optimal Energy-Efficient Cooperative Spectrum Sensing in Cognitive Radio Networks

Z. Zhang, Q. Wu, J. Wang
2013 Radioengineering  
cognitive radio networks.  ...  Inspired by the green communication trend of next-generation wireless networks, we select energy-efficient throughput as optimization metric for jointly optimizing sensing time and working sensors in cooperative  ...  As such, we investigate the issue of how to achieve the maximum EE throughput in cooperative cognitive radio networks from the perspective of EE.  ... 
doaj:468a4686dd994320977cf76fc3bd8eb9 fatcat:y4e66teskvhjxmfiwtmrbfh5g4

Threshold optimization of cooperative spectrum sensing in cognitive radio networks

Xin Liu, Min Jia, Xuezhi Tan
2013 Radio Science  
Tan (2013), Threshold optimization of cooperative spectrum sensing in cognitive radio networks, Radio Sci., 48, 23-32,  ...  1] We consider the threshold optimization problem of cooperative spectrum sensing for cognitive radio (CR) and investigate the threshold optimization algorithm for both singlechannel and multichannel cooperative  ...  Cognitive radio (CR) is proposed as an efficient spectrum sharing technique for unlicensed users [Akyildiz et al., 2006] . [3] CR can smartly sense and adapt for the changing environment by altering its  ... 
doi:10.1029/2012rs005009 fatcat:qo5l4zrywffyrkaxzzivltltnq

Optimal Linear Cooperation for Spectrum Sensing in Cognitive Radio Networks

Zhi Quan, Shuguang Cui, Ali H. Sayed
2008 IEEE Journal on Selected Topics in Signal Processing  
The insights obtained in this paper are useful for the design of optimal spectrum sensing in cognitive radio networks.  ...  Spectrum sensing, as a key enabling functionality in cognitive radio networks, needs to reliably detect signals from licensed primary radios to avoid harmful interference.  ...  CONCLUSION We have developed an optimal linear framework for cooperative spectrum sensing in cognitive radio networks.  ... 
doi:10.1109/jstsp.2007.914882 fatcat:hap72zsh4neizliwt5lxw364ki

An Optimal Strategy for Cooperative Spectrum Sensing in Cognitive Radio Networks

Zhi Quan, Shuguang Cui, Ali H. Sayed
2007 IEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference  
Spectrum sensing is a key enabling functionality in cognitive radio (CR) networks, where the CRs act as secondary users that opportunistically access free frequency bands.  ...  In this paper, we present optimal cooperation strategies for spectrum sensing to combat the effects of destructive channels and malfunctioning devices.  ...  Sayed was supported in part by NSF awards ECS-0601266 and ECS-0725441. The work of S. Cui was supported in part by NSF grant CNS-0627118.  ... 
doi:10.1109/glocom.2007.558 dblp:conf/globecom/QuanCS07 fatcat:jf3l7d46tfhm5gjarpgqsn6jq4

Optimization of cooperative spectrum sensing with sensing user selection in cognitive radio networks

Huogen Yu, Wanbin Tang, Shaoqian Li
2011 EURASIP Journal on Wireless Communications and Networking  
Cooperative spectrum sensing (CSS) can improve the spectrum sensing performance by introducing spatial diversity in cognitive radio networks (CRNs).  ...  In this article, we consider the reporting delay and formulate the optimization problem of CSS with sensing user selection to maximize the average throughput of the CRN in both the additive white Gaussian  ...  This adds the reporting delay to cognitive radio networks (CRNs). To address this issue, the study [15] proposed that cooperative SUs sent local sensing data concurrently.  ... 
doi:10.1186/1687-1499-2011-208 fatcat:venhfabywrc7bbu3pw7ot6hmdm

Optimal Hard Decision Fusion Rule for Centralized and Decentralized Cooperative Spectrum Sensing in Cognitive Radio Networks

Ashish Rauniyar, Jae Min Jang, Soo Young Shin
2015 Journal of Advances in Computer Networks  
In CR networks, SUs can be coordinated to perform cooperative spectrum sensing (CSS) to achieve higher detection accuracy.  ...  Cognitive radio (CR) is the key technology for unlicensed secondary users (SUs) to exploit the unused spectrum of primary users (PUs) via opportunistic spectrum access.  ...  The Q d and Q fa at the FC using HV rule isFig. 3shows the simulation result for different fusion rules from n=1 to K = 6 in a cognitive radio network with 6 SUs in terms of total error rate .  ... 
doi:10.7763/jacn.2015.v3.168 fatcat:d4ycjyar4rdsvfn6splo6ptgqa

Capacity Optimization For Local And Cooperative Spectrum Sensing In Cognitive Radio Networks

Ayman A. El-Saleh, Mahamod Ismail, Mohd. A. M. Ali, Ahmed N. H. Alnuaimy
2009 Zenodo  
The dynamic spectrum allocation solutions such as cognitive radio networks have been proposed as a key technology to exploit the frequency segments that are spectrally underutilized.  ...  In this paper, the throughput-sensing time relationship in local and cooperative spectrum sensing has been investigated under two distinct scenarios, namely, constant primary user protection (CPUP) and  ...  Cognitive Radio Network Deployment The network deployment in this paper is based on the IEEE 802.22 WRAN [5] .  ... 
doi:10.5281/zenodo.1063350 fatcat:qjpsdsz23zesposoyezwn5r56u

Optimal Periodic Cooperative Spectrum Sensing Based on Weight Fusion in Cognitive Radio Networks

Xin Liu, Min Jia, Xuemai Gu, Xuezhi Tan
2013 Sensors  
The performance of cooperative spectrum sensing in cognitive radio (CR) networks depends on the sensing mode, the sensing time and the number of cooperative users.  ...  , is proposed to obtain the optimal sensing time for improving the throughput of the cognitive radio user (CRU) during each period, and finally the water-filling principle is applied to optimize the searching  ...  Conclusions In cognitive radio networks, the interests of PU and CRU are contradictory.  ... 
doi:10.3390/s130405251 pmid:23604027 pmcid:PMC3673135 fatcat:4trhyohtcbha3mwqjjysuy7lba
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