Results 41 to 50 of about 4,915,463 (326)

LSTM neural network for solar radio spectrum classification

open access: yesResearch in Astronomy and Astrophysics, 2019
A solar radio spectrometer records solar radio radiation in the radio waveband. Such solar radio radiation spanning multiple frequency channels and over a short time period could provide a solar radio spectrum which is a two dimensional image.
Long Xu   +5 more
semanticscholar   +1 more source

Countrywide Mobile Spectrum Sharing with Small Indoor Cells for Massive Spectral and Energy Efficiencies in 5G and Beyond Mobile Networks

open access: yesEnergies, 2019
In this paper, we propose a technique to share the licensed spectrums of all mobile network operators (MNOs) of a country with in-building small cells per MNO by exploiting the external wall penetration loss of a building and introducing the time-domain ...
Rony Kumer Saha
doaj   +1 more source

Radio spectrum awareness using deep learning: Identification of fading channels, signal distortions, medium access control protocols, and cellular systems

open access: yesIntelligent and Converged Networks, 2021
Radio spectrum awareness, including understanding radio signal activities, is crucial for improving spectrum utilization, detecting security vulnerabilities, and supporting adaptive transmissions.
Yu Zhou   +10 more
doaj   +1 more source

Energy Efficient Cognitive Radio Spectrum Sensing for 5G Networks – A Survey [PDF]

open access: yesEAI Endorsed Transactions on Energy Web, 2021
INTRODUCTION: Recently, the role of Artificial Intelligence plays a major role in the communication sector. As the revolution of spectrum and its standards is progressing towards 5G networks and beyond, there is a rapid innovation in design of 5G ...
Suriya Murugan, M. Sumithra
doaj   +1 more source

Realization of Licensed/Unlicensed Spectrum Sharing Using eICIC in Indoor Small Cells for High Spectral and Energy Efficiencies of 5G Networks

open access: yesEnergies, 2019
In this paper, we show how to realize numerous spectrum licensing policies by means of time-domain enhanced inter-cell interference coordination (eICIC) technique to share both the licensed and unlicensed spectrums with small cells in order to address ...
Rony Kumer Saha
doaj   +1 more source

Cognitive Radio Network Technology for IoT-Enabled Devices

open access: yesEngineering Proceedings, 2023
The exponential development of wireless applications has increased problems in the spectrum. The unlicensed frequency spectrum is becoming highly saturated, in order to support the conditions of new radio devices with increasing data rates.
Omer Al-Dulaimi   +3 more
doaj   +1 more source

Compact steep-spectrum and peaked-spectrum radio sources [PDF]

open access: yes, 2020
Compact steep-spectrum (CSS) and peaked-spectrum (PS) radio sources are compact, powerful radio sources. The multi-frequency observational properties and current theories are reviewed with emphasis on developments since the earlier review of O’Dea (PASP ...
C. O'Dea, D. J. Saikia
semanticscholar   +1 more source

Radio Spectrum of Maffei 2 [PDF]

open access: yesNature, 1971
THE conclusion that Maffei 1 and 2 are previously unrecognized nearby galaxies1 has aroused considerable interest; a positive detection of high frequency radio emission from Maffei 2 has been reported2,3 as also has a null result in the direction of Maffei 1 (ref. 4).
openaire   +2 more sources

Dynamic Spectrum Allocation Method of Shortwave Radio Access Network Based on Graph Coloring Theory [PDF]

open access: yesJisuanji gongcheng, 2016
Aiming at the problem that the existing fixed spectrum allocation method of shortwave radio access network can not satisfy the new requirement of applying intelligent frequency hopping technology,the spectrum demand of shortwave radio access network ...
DUAN Ruijie,YAO Fuqiang,LI Yonggui,NIU Yingtao,QI Yangyang
doaj   +1 more source

An Overview of Cognitive Radio Technology and Its Applications in Civil Aviation

open access: yesSensors, 2023
This paper provides an overview of cognitive radio technology and its applications in the field of civil aviation. Cognitive radio technology is a relatively new and emerging field that allows for dynamic spectrum access and efficient use of spectrum ...
Ruikang Zheng, Xuan Li, Yudong Chen
doaj   +1 more source

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