COGNITIVE_RADIO_NETWORKS

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OPTIMIZATION OF MULTIPLE-CHANNEL COOPERATIVE SPECTRUM SENSING WITH DATA FUSION RULE IN COGNITIVE RADIO NETWORKS
《Journal of Electronics(China)》2012年第6期515-522,共8页Yu Huogen Tang Wanbin Li Shaoqian 
Supported by the National Natural Science Foundation of China (No. 61271169);National Basic Research Program (973 Program) of China (No. 2009CB320405);Nation Grand Special Science and Technology Project of China under Grant (No. 2010ZX03006-002, 2010ZX03002-008-03)
This paper focuses on multi-channel Cooperative Spectrum Sensing (CSS) where Secondary Users (SUs) are assigned to cooperatively sense multiple channels simultaneously. A multi-channel CSS optimization problem of join...
关键词：Cooperative Spectrum Sensing (CSS) Cognitive radio Branch and Bound (BnB) algorithm Greedy algorithm 
A DISTRIBUTED COOPERATIVE RELAYING OPTIMIZATION SCHEME FOR SECONDARY TRANSMISSION IN COGNITIVE RADIO NETWORKS
《Journal of Electronics(China)》2011年第1期8-14,共7页Chert Dan Ji Hong 
Supported by the National Natural Science Foundation (No. 60832009);the Beijing Municipal Natural Science Foundation(No. 4102044);the National Natural Science Foundation for Distinguished Young Scholar(No. 61001115)
In Cognitive Radio(CR) networks,cooperative communication has been recently regarded as a key technology for improving the spectral utilization efficiency and ensuring the Quality of Service(QoS) for Primary Users(PUs...
关键词：Cognitive Radio(CR) Secondary transmission Relay selection Power allocation Restless bandit system 
A DISTRIBUTED METHOD FOR RELAY SELECTION IN COOPERATIVE COGNITIVE RADIO NETWORKS
《Journal of Electronics(China)》2010年第5期715-722,共8页Zhao Junhui Chen Ximei 
Supported by the Key Laboratory of Universal Wireless Communications Lab., Beijing University of Posts and Telecommunications, Ministry of Education, the Open Research Fund of National Mobile Communications Research Laboratory (No. W200906);Southeast University, the Fundamental Research Funds for the Central Universities;National Natural Science Foundation of China (No. 50534060)
We analyze the performance of a fully decentralized relay-selection method for the re-lay-assisted Cognitive Radio(CR) systems.The method requires no explicit communication among relay,assumes no prior knowledge of ge...
关键词：Relay-selection Cognitive Radio (CR) Outage probability 
LOW-COMPLEXITY JOINT BEAMFORMING AND POWER ALLOCA-TION FOR SINR BALANCING IN COGNITIVE RADIO NETWORKS
《Journal of Electronics(China)》2010年第5期686-695,共10页Yang Yang Wang Jinlong Wu Qihui Liu Xin 
Supported by the National Basic Research Program (973) of China (No. 2009CB320400);the National High-Tech Research and Development Program (863) of China (No. 2009AA01Z243);the National Science Fundation of China (No. 61072044);the Natural Science Fundation of Jiangsu Province (BK2009056)
We consider the Signal-to-Interference plus Noise Ratio(SINR) balancing problem in-volving joint beamfoming and power allocation in the Cognitive Radio(CR) network,wherein the Single-Input Multi-Output Multiple Access...
关键词：Cognitive Radio (CR) BEAMFORMING Power allocation Signal-to-Interference plus Noise Ratio (SINR) balancing 
NULL-SPACE PROJECTION AND WATERFILLING RESOURCE ALLOCATION IN MULTI-ANTENNA COGNITIVE RADIO NETWORKS
《Journal of Electronics(China)》2010年第5期701-707,共7页Rong Mei Zhu Shihua 
Cognitive Radio(CR) is a promising technique for the next generation mobile communi-cation system for its capability to solve the conflicts between the scarcity and underutilization of spectrum.In this paper,aiming at...
关键词：Cognitive Radio (CR) network Resource allocation Null-space projection Waterfilling 
INTERFERENCE ESTIMATION AND ITS APPLICATIONS IN COGNITIVE RADIO NETWORKS
《Journal of Electronics(China)》2010年第5期630-638,共9页Chen Ronghao Chen Wei Wang Jun Li Shaoqian 
Supported by the High-tech Research and Development Program (863 Program) of China (No. 2009AA011801);the National Basic Research Program (973 Program) of China (No. 2009CB320405);the Foundation Project of National Key Laboratory of Science and Technology on Communications (No. 9140C0202061004);the Fundamental Research Funds for the Central Universities (No. ZYGX2009X002)
Cognitive Radio(CR) has been proposed as a system-level means to improve the spectrum utilization efficiency.The most significant premise for CR networks is to avoid harmful interference to the licensed users.Therefor...
关键词：Cognitive Radio (CR) Spectrum sensing Interference estimation 
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