Security in cognitive radio networks by Qing-qi PEI, Hong-ning LI, Hong-yang ZHAO, Nan LI, Ying MIN

“…Cognitive radio can obtain and access spectrum white holes without interfering primary users by sensing wireless environment to meet with the more spectrum requirement of users and improve spectrum utilization.However,it also brings new secure challenges that different from traditional wireless networks.Relying cognition cycle,the security issues in cognitive radio networks are presented from data channel,control channel and terminal equipment,then the existing defensive measures and propose the secure recommendations of cognitive radio networks are introduced.…”
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Research on Topology Reconfiguration in Cognitive Radio Networks by Qian He

Subjects: “…cognitive radio network…”
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Proactive spectrum handoff in distributed cognitive radio networks by Hua JIANG, Li-chuan MA, Ding-yu YAN, Nan PAN

Subjects: “…distributed cognitive radio network…”
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Resource allocation in cognitive radio network with energy harvesting by Yan LONG, Xiaoqian ZHANG, Xuming FANG, Rong HE

Subjects: “…cognitive radio network…”
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Optimizing Cooperative Cognitive Radio Networks with Opportunistic Access by Ammar Zafar, Mohamed-Slim Alouini, Yunfei Chen, Redha M. Radaydeh

“…Optimal resource allocation for cooperative cognitive radio networks with opportunistic access to the licensed spectrum is studied. …”
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Joint transceiver beamforming in MIMO cognitive radio network by Yan GUO, Fang-jun ZHU, Ning LI, Xiao-yun YUAN

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Application of Reinforcement Learning in Cognitive Radio Networks: Models and Algorithms by Kok-Lim Alvin Yau, Geong-Sen Poh, Su Fong Chien, Hasan A. A. Al-Rawi

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Research on Basic Theory and Key Technology of Cognitive Radio Network by Ping Zhang, Jianwu Li, Zhiyong Feng, Qixun Zhang

Subjects: “…cognitive radio network…”
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Requirements-oriented spectrum sharing for OFDMA cognitive radio networks by Chi ZHANG, Bi-qing ZENG, Jin-song YANG, Xiao-hong XIE

“…Considering the satisfaction of the secondary network communication requirements,a two-stage model was proposed to address the spectrum leasing and allocation problem in OFDMA cognitive radio networks(CRN).At the first stage of the model,the secondary base station(SBS)collected channel capacity requirements of the secondary network,and rent the spectrum resource from multiple primary base stations(PBS).The trade behaviors between the PBS and the SBS were modeled with a Bertrand game,and adopted the Nash equilibrium as the pricing scheme.At the second stage,with the Nash bargaining solution(NBS),the subcarriers and power allocation problem were defined as a nonlinear programming problem,and obtained the solution by Lagrange multiplier method.Comparing with the other spectrum allocation schemes,simulation results show the proposed spectrum sharing scheme can satisfy each secondary user’s communication requirements more fairly and efficiently.…”
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Spectrum Handoff with Channel Sensing Sequencing in Cognitive Radio Network by Xingyu Zhu, Huaibei Zhou, Junyuan Huang

“…In the cognitive radio network，when the primary users show up，the secondary users should vacate the channel and find another free channel for data transmissions.This is the so-called spectrum handoff.There are two most important performance metrics for spectrum handoff：handoff delay and handoff times.A novel spectrum handoff scheme with channel sensing sequencing was proposed in order to decrease both handoff delay and handoff times.When designing the channel sensing sequence，the channel free probability was considered，and the probability that no handoff will happen in a channel was considered as well.The simulation results show that the method not only can get the minimum handoff delay as the traditional method does，but also can decrease the handoff times were significantly compared with the traditional method.…”
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Quorum Systems towards an Asynchronous Communication in Cognitive Radio Networks by Sylwia Romaszko, Petri Mähönen

“…This paper reviews quorum systems (QS) from the perspective of cognitive radio networks. Quorum systems were originally developed for and widely used in the scope of operating systems. …”
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Joint optimization of power and channel access in cognitive radio network by Jiang ZHU, Qingmin DU, Shaowei BA

Subjects: “…cognitive radio network…”
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Resource Allocation with MAC Layer Node Cooperation in Cognitive Radio Networks by Andreas Merentitis, Dionysia Triantafyllopoulou

“…An algorithm for cooperative Dynamic Spectrum Access in Cognitive Radio networks is presented. The proposed algorithm utilizes Medium Access Control layer mechanisms for message exchange between secondary nodes that operate in license exempt spectrum bands, in order to achieve interference mitigation. …”
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Cooperative sensing method considering malicious nodes in cognitive radio networks by Xiao-gang QI, Sheng-yu ZHENG, Li-fang LIU, Hui-fang WANG

“…Based on a more practical cognitive radio network with malicious users,the spectrum sharing network model based on the cooperative spectrum sensing was studied that the secondary user can dynamically adjust its transmit power based on cooperative sensing results.To avoid significant reduction in performance of spectrum sensing system caused by malicious nodes,it is aimed to study how to improve the performance of cooperative sensing.By introducing the convex optimization problem,the secondary network throughput is maximized under the certain detection probability conditions and the corresponding power constraints.Simulation results show that whether or not there are malicious nodes,the algorithm is efficient in calculating optimal sensing time and the optimal transmit powers,and the secondary network throughput is increased when the maximum interference power limits and the maximum transmit power restrictions are decreased.…”
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Research on Data Gathering Algorithm Based on Fairness in Cognitive Radio Network by Xiaoming Wang, Jiankang Zhang

Subjects: “…cognitive radio network…”
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Optimal sensing performance for cooperative and non-cooperative cognitive radio networks by Waqas Khalid, Heejung Yu

“…Spectrum sensing plays a vital role in cognitive radio networks, and its reliability determines the success of transmission. …”
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A Truthful Bilateral Multiunit Auction for Heterogeneous Cognitive Radio Networks by Jinzhao Su, Jianfei Wang, Wei Wu

“…Existing auction schemes are either to be unilateral trade which only supports heterogeneous cognitive radio networks without guarantee of bid truthfulness, or to be truthful single-unit auction which only supports homogeneous channels. …”
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Investigation of traffic adaptation based interference alignment for cognitive radio networks by Heng DONG, Rong-fang SONG

“…A novel method of adaptive interference alignment (IA) was proposed for cognitive radio networks. The new IA scheme, which was chiefly characterized by off-line feasible set optimization and traffic load oriented adaptation, en-ables dynamic sharing of channel resource among a pair of primary users and multiple pairs of secondary users. …”
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Covariance Blind Detection Method Based on Eigenvector in Cognitive Radio Network by Yingxue Li, Jing Lei, Shiyuan Zhong, Chunming Huang, Chao Huang

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Routing approach based on local topology control in cognitive radio networks by Shu-qi LIU, Yi-ming WANG, Cui-mei CUI

Subjects: “…cognitive radio network…”
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