Results 21 to 30 of about 37,303 (160)
Computer and Information Science, 2008 The radio frequency spectrum is a scarce natural resource and its efficient use is of the utmost importance. The spectrum bands are usually licensed to certain services, such as mobile, fixed, broadcast, and satellite, to avoid harmful interference between different networks to affect users.
Kevin Curran +2 more
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Cooperation and Cognitive Radio [PDF]
2007 IEEE International Conference on Communications, 2007 Cooperation is increasingly regarded as a key technology for tackling the challenges of a practical implementation of cognitive radio. In this paper, we first give a brief overview of the envisioned applications of cooperative technology to cognitive radio, distinguishing among cooperative sensing for detection of the primary activity, cooperative ...
GAMBINI, JONATHAN +3 more
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Journal of Marine Science and Engineering, 2023 In recent years, underwater wireless optical communication (UWOC) has become a potential wireless carrier candidate for signal transmission in water mediums such as oceans.
Jielin Fu +3 more
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A KNN Learning Algorithm for Collusion-Resistant Spectrum Auction in Small Cell Networks
IEEE Access, 2018 Existing spectrum auction algorithms rarely consider the collusion-resistant, which decreases the spectrum allocation efficiency. In this paper, we propose a collusion-resistant spectrum auction algorithm based on K-Nearest Neighbor (KNN) learning in ...
Feng Zhao, Qingqing Tang
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IEEE Access, 2019 The quality of service (QoS) and lifetime of wireless sensor networks (WSNs) are severely degraded by coverage holes generated by random deployment or battery exhaustion of sensors. This work firstly introduces a novel confident information coverage CIC)
Jie Feng, Hongbin Chen
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2012 9th International Conference on Communications (COMM), 2012 Cognitive Radio Networks (CRNs) are emerging as a solution to increase the spectrum utilization by using unused or less used spectrum in radio environments. The basic idea is to allow unlicensed users access to licensed spectrum, under the condition that the interference perceived by the licensed users is minimal.
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Eigenvalue Based Detection by Combining Eigenvector-Correlated Signal in Low SNR Environment
IET Signal ProcessingEigenvalue detection is extensively utilized in numerous applications, including spectrum sensing in cognitive radio. However, the characteristics of the Tracy–Widom (TW2) distribution and its lack of accurate close-form expression limit the detection ...
Wei Ge +4 more
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IEEE Access, 2016 This paper concerns with a relay-aided massive multiple input multiple output (MIMO) cellular network. The exact closed-form expressions of both spectral efficiency (SE) and energy efficiency (EE) are obtained for downlink single-cell multi-user multi ...
Jing Chen +3 more
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Sensors, 2020 An important step in the design of receiver aperture and optimal spacing of the diversity scheme for an underwater laser communication system is to accurately characterize the two-dimensional (2D) spatial distribution of laser beam intensity.
Wei Wang +3 more
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International Journal of Distributed Sensor Networks, 2022 Cognitive radios are expected to play an important role in capturing the constantly growing traffic interest on remote networks. To improve the usage of the radio range, a cognitive radio hub detects the weather, evaluates the open-air qualities, and ...
Ahmed Alkhayyat +6 more
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