Results 1 to 10 of about 513,380 (261)
Spectrum Sensing in the Presence of Multiple Primary Users [PDF]
IEEE Transactions on Communications, 2012 We consider multi-antenna cooperative spectrum sensing in cognitive radio networks, when there may be multiple primary users. A detector based on the spherical test is analyzed in such a scenario. Based on the moments of the distributions involved, simple and accurate analytical formulae for the key performance metrics of the detector are derived.
Wei, Lu, Tirkkonen, Olav
exaly +6 more sources
Frontiers in Public Health, 2021 Background: Workplace violence is a social problem of special interest in both intervention and research. Among the sectors that most perceive this type of violence, health care professionals stand out.
David Pina +11 more
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Cooperative spectrum sharing of multiple primary users and multiple secondary users
Digital Communications and Networks, 2016 This paper proposes a multiple-input multiple-output (MIMO) based cooperative dynamic spectrum access (DSA) framework that enables multiple primary users (PUs) and multiple secondary users (SUs) to cooperate in spectrum sharing.
Hang Liu +4 more
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Performance Analysis of Spectrum Sensing With Multiple Primary Users [PDF]
IEEE Transactions on Vehicular Technology, 2012 The effect of multiple primary users on spectrum-sensing performance is investigated. Different models for primary user traffic are considered. The effects of different system parameters on sensing accuracy are examined. Numerical results show that the spectrum-sensing performance is significantly degraded by the primary user traffic and that the ...
Chen He, Lingge Jiang, Yunfei Chen
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Spectrum Sensing Based on Hybrid Spectrum Handoff in Cognitive Radio Networks
Entropy, 2023 The rapid advancement of wireless communication combined with insufficient spectrum exploitation opens the door for the expansion of novel wireless services.
Lakshminarayanan Vaduganathan +3 more
doaj +1 more source
Impact of secondary user communication on security communication of primary user [PDF]
Security and Communication Networks, 2015 AbstractCognitive radio network concept has been considered as a promising solution to improve the spectrum utilization. However, it may be vulnerable to security problems as the primary user (PU) and secondary user (SU) access the same resource.
Louis Sibomana +2 more
openaire +2 more sources
Balancing outage performance of primary user and secondary user by relay-assisted primary transmission [PDF]
EURASIP Journal on Advances in Signal Processing, 2014 In this paper, a cooperative transmission protocol for cognitive radio systems is proposed. In this protocol, the primary system comprises a transmitter (PT), a receiver (PR), and a decode-and-forward relay (Relay), while the secondary system comprises a transmitter (ST) and a receiver (SR).
Feng Zhao 0002 +3 more
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Journal of King Saud University: Computer and Information Sciences, 2022 There are differences between routing in traditional and in Cognitive Radio Networks (CRNs). The availability of channels, periodic spectrum sensing, jammers activity, are some of these differences, etc.
Sharhabeel H. Alnabelsi +3 more
doaj +1 more source
BMJ Open, 2022 Objective To explore the barriers/facilitators to deprescribing in primary care in England from the perspectives of clinicians, patients living with frailty who reside at home, and their informal carers, drawing on the Theoretical Domains Framework to ...
George Peat +6 more
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