Results 21 to 30 of about 542,859 (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, DE NARDIS, Luca, DI BENEDETTO, Maria Gabriella, Thobaben, Ragnar   +3 more
core   +1 more source

Cognitive radio-enabled Internet of Vehicles (IoVs): a cooperative spectrum sensing and allocation for vehicular communication [PDF]

, 2018
Internet of Things (IoTs) era is expected to empower all aspects of Intelligent Transportation System (ITS) to improve transport safety and reduce road accidents. US Federal Communication Commission (FCC) officially allocated 75MHz spectrum in the 5.9GHz
Eze, Elias Chinedum, Eze, Joy C., Liu, Enjie, Zhang, Sijing   +3 more
core   +2 more sources

Edge-Graph Enhanced Network for Multi-Object Tracking in UAV Videos

Remote Sensing
Multi-Object Tracking (MOT) is a fundamental research topic in the field of computer vision, with broad application potential in unmanned aerial vehicle (UAV) videos.
Yiming Xu, Hongbing Ji, Yongquan Zhang
doaj   +1 more source

Opportunistic Spectrum Sensing and Transmissions [PDF]

, 2012
Nowadays, cognitive radio is one of the most promising paradigms in the arena of wireless communications, as it aims at the proficient use of radio resources. Proper utilization of the radio spectrum requires dynamic spectrum accessing. To this end, spectrum sensing is undoubtedly necessary.
S.k. Shariful Alam, MARCENARO, LUCIO, REGAZZONI, CARLO   +2 more
openaire   +2 more sources

Contextual-Semantic Interactive Perception Network for Small Object Detection in UAV Aerial Images

Remote Sensing
Unmanned 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

Enhanced Underwater Single Vector-Acoustic DOA Estimation via Linear Matched Stochastic Resonance Preprocessing

Remote Sensing
Underwater 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, Jian Suo, Zhigang Zhu, Haiyan Wang, Hongbing Ji   +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

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

Wideband Spectrum Sensing in Cognitive Radio Networks

, 2008
Spectrum sensing is an essential enabling functionality for cognitive radio networks to detect spectrum holes and opportunistically use the under-utilized frequency bands without causing harmful interference to legacy networks.
Cui, Shuguang, Poor, H. Vincent, Quan, Zhi, Sayed, Ali H.   +3 more
core   +1 more source

Distributed Wideband Spectrum Sensing

CoRR, 2015
6 pages, 6 figures, submitted to ieee Globecom ...
Thomas Kealy, Oliver Johnson, Robert J. Piechocki   +2 more
openaire   +2 more sources