Results 21 to 30 of about 535,922 (281)
Cooperative sensing of spectrum opportunities [PDF]
, 2015 Reliability and availability of sensing information gathered from local spectrum sensing (LSS) by a single Cognitive Radio is strongly affected by the propagation conditions, period of sensing, and geographical position of the device.
Caso, Giuseppe +3 more
core +1 more source
Contextual-Semantic Interactive Perception Network for Small Object Detection in UAV Aerial Images
Remote SensingUnmanned Aerial Vehicle (UAV)-based aerial object detection has been widely applied in various fields, including logistics, public security, disaster response, and smart agriculture.
Yiming Xu, Hongbing Ji
doaj +1 more source
Spectrum sensing techniques for 5G wireless networks: Mini review
Sensors International, 2022 Cognitive radio (CR) is a leading candidate for addressing spectrum constraints and is a key component of fifth-generation (5G) communications. For optimum usage of accessible unused spectrum, spectrum sensing is a critical aspect of CR.
RS Koteeshwari, B. Malarkodi
doaj +1 more source
Remote SensingUnderwater acoustic vector sensors (UAVSs) are increasingly utilized for remote passive sonar detection, but the accuracy of direction-of-arrival (DOA) estimation remains a challenging problem, particularly under low signal-to-noise ratio (SNR ...
Haitao Dong +4 more
doaj +1 more source
Markov Model-Based Energy Efficiency Spectrum Sensing in Cognitive Radio Sensor Networks
Journal of Computer Networks and Communications, 2016 Cognitive Radio Sensor Network (CRSN), incorporating cognitive radio capability in wireless sensor networks, is a new paradigm of the next-generation sensor network. Sensor nodes are usually battery powered and hence have strict energy constraints.
Yan Jiao, Inwhee Joe
doaj +1 more source
Cooperative Spectrum Sensing With Data Mining of Multiple Users’ Historical Sensing Data
IEEE Access, 2016 Under the case of exponentially growth of wireless services and the scarcity of spectrum resources, cognitive radio (CR) has been proposed to access licensed channels opportunistically, and thus improve spectrum utilization.
Xin-Lin Huang +4 more
doaj +1 more source
Cooperative distributed sequential spectrum sensing
2011 National Conference on Communications (NCC), 2011 This paper has been withdrawn by the author due to the submission of detailed journal version of the same paper, to ...
S, Jithin K +2 more
openaire +2 more sources
SensorsRemote passive sonar detection with low-frequency band spectral lines has attracted much attention, while complex low-frequency non-Gaussian impulsive noisy environments would strongly affect the detection performance.
Haitao Dong +3 more
doaj +1 more source
Cluster-based cooperative subcarrier sensing using antenna diversity-based weighted data fusion [PDF]
, 2015 Cooperative spectrum sensing (CSS) is used in cognitive radio (CR) networks to improve the spectrum sensing performance in shadow fading environments. Moreover, clustering in CR networks is used to reduce reporting time and bandwidth overhead during CSS.
Ghafoor, Abdul +2 more
core +1 more source
A Low-Overhead Energy Detection Based Cooperative Sensing Protocol for Cognitive Radio Systems
, 2009 Cognitive radio and dynamic spectrum access represent a new paradigm shift in more effective use of limited radio spectrum. One core component behind dynamic spectrum access is the sensing of primary user activity in the shared spectrum.
Lau, Vincent K. N. +2 more
core +3 more sources