Results 211 to 220 of about 438,323 (269)
Some of the next articles are maybe not open access.
Auction-Based Time Scheduling for Backscatter-Aided RF-Powered Cognitive Radio Networks
IEEE Transactions on Wireless Communications, 2019This paper investigates the time scheduling for a backscatter-aided radio-frequency-powered cognitive radio network, where multiple secondary transmitters transmit data to the same secondary gateway in the backscatter mode and the harvest-then-transmit ...
Xiaozheng Gao +4 more
semanticscholar +1 more source
2017
A cognitive radio can be defined by the capability of being aware of its environment and the internal state and, based on the knowledge of these elements and any stored pre-defined objectives, can dynamically adapt, make, and implement decisions about its behavior.
openaire +2 more sources
A cognitive radio can be defined by the capability of being aware of its environment and the internal state and, based on the knowledge of these elements and any stored pre-defined objectives, can dynamically adapt, make, and implement decisions about its behavior.
openaire +2 more sources
Cognitive radio network architecture
Proceedings of the 2nd international conference on Ubiquitous information management and communication, 2008Cognitive radio has been considered as a key technology for future wireless communications and mobile computing. We note the cognitive radios can form cognitive radio networks (CRN) by extending the radio link features to network layer functions and above.
K.-C. Chen +4 more
openaire +2 more sources
A Secure Spectrum Handoff Mechanism in Cognitive Radio Networks
IEEE Transactions on Cognitive Communications and Networking, 2020The need for more efficient spectrum utilization is becoming more pronounced in our increasingly digitalized society. However, this also introduces a variety of new security threats.
Geetanjali Rathee +4 more
semanticscholar +1 more source
Cognitive radio network management
IEEE Vehicular Technology Magazine, 2008The regulatory agencies have been pushed by the increasing demand for wireless ubiquitous connectivity to be ever more aggressive in providing innovative ways to use spectra efficiently. Driven by these new opportunities, the future radio systems should look for the optimized architecture, circuit, and algorithm as a whole. In this article, it has been
null Cheng-xiang Wang +3 more
openaire +1 more source
Cognitive Radio Sensor Networks
2014This chapter provides a review of design practices in network communication for Cognitive Radio Sensor Networks. The basics of networking and Medium Access Control functionalities with focus on data routing and spectrum usage are discussed. Technical differences manifest in various network layouts, hence the role of various specialized nodes, such as ...
Yasir Saleem, Mubashir Husain Rehmani
+4 more sources
Cognitive Radio Network Tomography
IEEE Transactions on Vehicular Technology, 2010The cognitive radio network (CRN), as a promising technique in future wireless communication networks, shall execute some critical functionalities to enhance existing wireless networks, such as network reconfigurability to adaptively select networks (e.g., in IEEE P1900.4 and ETSI-RSS), spectrum opportunity utilization for transmissions over ...
null Chung-Kai Yu +2 more
openaire +1 more source
Constructing accurate Radio Environment Maps with Kriging Interpolation in Cognitive Radio Networks
Cross Strait Quad-Regional Radio Science and Wireless Technology Conference, 2018The increased development of information industry and relevant radio communication services is making the spectrum management problem more challenging to solve.
Danlei Mao +5 more
semanticscholar +1 more source
Cognitive Radio Networking Preliminaries
2012Cognitive radio networking is foreseen as the future of wireless communication networks. Instead of operating in a predefined frequency band, cognitive wireless terminals can fully or partially use any available spectrum bands as long as their transmissions do not degrade the performance of the legitimate users which are licensed to operate in such ...
Ahmed Khattab +2 more
openaire +1 more source
Sensing-Throughput Tradeoff for Cognitive Radio Networks
IEEE Transactions on Wireless Communications, 2008Ying-Chang Liang +3 more
semanticscholar +1 more source