sponsored by National Basic Research Program of China (973 Program, No. 2013CB329003);National Natural Science Foundation of China (No. 91438205);China Postdoctoral Science Foundation (No. 2011M500664);Open Research fund Program of Key Lab. for Spacecraft TT&C and Communication, Ministry of Education, China (No.CTTC-FX201305)
This paper focuses on improving the detection performance of spectrum sensing in cognitive radio(CR) networks under complicated electromagnetic environment. Some existing fast spectrum sensing algorithms cannot get sp...
supported by the National Key Basic Research Program of China(973 Program) under Grant No.2009CB320400;the National Natural Science Foundation of China under Grants No.60932002,61172062,61301160;the Natural Science Foundation of Jiangsu,China under Grant No.BK2011116
Cognitive radio(CR) can bring about remarkable improvement in spectrum utilization.Different cognition cycles have been proposed in recent years.However,most of the existing works only emphasize functional or operatio...
supported in part by High-tech R&D Program of China (863 Program) (Grant Nos. 2009AA011801, 2009AA012002);National Fundamental Research Program of China (Grant No. A1420080150);National Basic Research Program of China (973 Program) (Grant No. 2009CB320405);Nation Grand Special Science and Technology Project of China (Grant Nos. 2008ZX03005-001, 2009ZX03007-004, 2009ZX03005-002, 2009ZX03005004, 2010ZX03006-002);Foundation Project of National Key Laboratory of Science and Technology on Communications and Special Project on Broadband Wireless Access sponsored by Huawei Co., Ltd.
In this paper, we consider a multi-channel cognitive radio network (CRN) where each secondary user (SU) can only choose to sense a subset of channels. We formulate a joint optimization problem of sensing- channel ...
supported by National Nature Science Foundation of China(No.61231008,No.61101143);National Basic Research Program of China(973 Program)(No.2009CB320404);the Program for Changjiang Scholars and Innovative Research Team in University(No.IRT0852);the 111 Project(No.B08038)
A novel cooperative spectrum sensing order which utilizes inactive Secondary users(SUs) efficiently based on maximum throughput has been proposed in Cognitive radio networks(CRNs). In order to predict the states of Pr...
supported by the National Basic Research Program of China(973 Program)under Grant No.2009CB320400;the National Natural Science Foundation of China under Grants No.61101117,No.61171099;the National Key Scientific and Technological Project of China under Grant No,2012ZX03003-007;the Natural Science Foundation of Jiangxi under Grant No.20132BAB201018;the Fundamental Research Funds for the Central Universities under Grant No.BUPT2012RC0112
This paper introduces the research progress on the cognition flow in the National Basic Research Program of China(973 Program)under Grant No. 2009CB320400 "Research on Basic Theories and Key Technologies of Cognitive ...
supported by the National Key Basic Research Program of China (973 Program)under Grant No. 2009CB320401;the National Natural Science Foundation of China under Grants No. 61171099, No. 61101117;the National Key Scientific and Technological Project of China under Grants No. 2012ZX03004005-002, No. 2012ZX03003-007;the Fundamental Research Funds for the Central Universities under Grant No. BUPT2012RC0112
This paper investigates the uplink throughput of Cognitive Radio Cellular Networks(CRCNs).As oppose to traditional performance evaluation schemes which mainly adopt complex system level simulations,we use the theoreti...
supported by National Basic Research Program of China(973 Program)(No. 2010CB731800);Key Project of National Nature Science Foundation of China(No. 60934003),National Nature Science Foundation of China(Nos. 61104033, 61172095,61203104);Nature Science Foundation of Hebei Province(Nos. F2011203226, F2012203109, F2012203126)
According to the property-rights model of cognitive radio, primary users (PUs) who own the spectrum resource have the right to lease part of spectrum to secondary users (SUs) in exchange for appropriate profit. In...
The National Science and Technology Major Project( No. 2010ZX03006-002-01 );the National Basic Research Program of China ( 973 Program) ( No. 2011CB302905);the Science and Technology Support Program of Jiangsu Province ( No. BE2011177)
In order to improve the throughput performance of the secondary users (SUs) in the cognitive radio (CR) environment, a quality of service (QoS) based media access control (MAC) protocol is proposed. In this pr...
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...
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...