Results 31 to 40 of about 33,992 (111)
Maximizing energy efficiency in 6G cognitive radio network
Digital Communications and NetworksThe increasing demand for infotainment applications necessitates efficient bandwidth and energy resource allocation. Sixth-Generation (6G) networks, utilizing Cognitive Radio (CR) technology within CR Network (CRN), can enhance spectrum utilization by ...
Umar Ghafoor, Adil Masood Siddiqui
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A Sensing Error Aware MAC Protocol for Cognitive Radio Networks
EAI Endorsed Transactions on Mobile Communications and Applications, 2012 Cognitive radios (CR) are intelligent radio devices that can sense the radio environment and adapt to changes in the radio environment. Spectrum sensing and spectrum access are the two key CR functions.
Donglin Hu, Shiwen Mao
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Reinforcement Learning for Dynamic Spectrum Management in WCDMA [PDF]
Telfor Journal, 2009 Low use of licensed spectrum imposes a need for the advanced spectrum management for wise spectrum usage with the release of unneeded frequency bands for the secondary markets and opportunistic access.
R. Agustí +3 more
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IEEE Access, 2019 In cognitive radio networks (CRN), secondary users (SUs) are required to detect the presence of the licensed users, known as primary users (PUs), and to find spectrum holes for opportunistic spectrum access without causing harmful interference to PUs ...
Nan Zhao +5 more
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Cognitive Network Cooperation for Green Cellular Networks
IEEE Access, 2016 In recent years, there has been a growing interest in green cellular networks for the sake of reducing the energy dissipated by communications and networking devices, including the base stations (BSs) and battery-powered user terminals (UTs).
Jia Zhu, Yulong Zou
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Tongxin xuebao, 2014 Explored the opportunistic spectrum access method for cognitive radio sensor networks with regular topology patterns and coverage patterns.The method includes an economic spectrum-and-timeslot-allocation scheme,a sensing-results-reporting scheme and a ...
Wen-xiang LI, Ya-jie MA, Peng KE
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PERFORMANCE OF OPPORTUNISTIC SPECTRUM ACCESS WITH SENSING ERROR IN COGNITIVE RADIO AD HOC NETWORKS [PDF]
Journal of Engineering Science and Technology, 2012 Sensing in opportunistic spectrum access (OSA) has a responsibility to detect the available channel by performing binary hypothesis as busy or idle states. If channel is busy, secondary user (SU) cannot access and refrain from data transmission.
N. ARMI +4 more
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Cooperative Spectrum Sensing Application Using RTL-Dongle Technology.
Telemática, 2019 Cognitive Radio (CR) systems have become a key paradigm for future wireless communications. Spectrum management efficiency is improved by CR strategies, which allows to Secondary Users (SUs) get opportunistic access to idle bands licensed to Primary ...
David Alejandro Urquiza Villalonga +4 more
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Opportunistic spectrum accessing joint distance with service characteristics in IOT networks
Tongxin xuebao, 2012 An accessing scheme which combines distance with service for the applications in IOT networks was proposed.First,a channel-availability list based on the distance relationship between system and non-system users was built.The list provided a priority of ...
Jun SUN, Hong-bo ZHU
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Revitalizing the Public Airwaves: Opportunistic Unlicensed Reuse of Government Spectrum
International Journal of Communication, 2009 While many policy analysts have focused on the fate of the 700 MHz auctions, the digital TV transition, and the promise of white space devices, a more vast and underutilized resource has gone largely unnoticed: government spectrum.
Victor W. Pickard, Sascha D. Meinrath
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