Results 31 to 40 of about 404,248 (295)

Construction and Distribution Method of REM Based on Edge Intelligence [PDF]

open access: yesJisuanji kexue, 2022
Radio environment map(REM) can assist cognitive users to accurately perceive and utilize spectrum holes,achieve interference coordination between network nodes,and improve the spectrum efficiency and robustness of wireless networks.However,when cognitive
LIU Xing-guang, ZHOU Li, LIU Yan, ZHANG Xiao-ying, TAN Xiang, WEI Ji-bo
doaj   +1 more source

Motion Planning for Optimal Information Gathering in Opportunistic Navigation Systems [PDF]

open access: yes, 2013
Motion planning for optimal information gathering in an opportunistic navigation (OpNav) environment is considered. An OpNav environment can be thought of as a radio frequency signal landscape within which a receiver locates itself in space and time by
Humphreys, Todd E., Kassas, Zaher M.
core   +1 more source

Transfer Learning for Wireless Fingerprinting Localization Based on Optimal Transport

open access: yesSensors, 2020
Wireless fingerprinting localization (FL) systems identify locations by building radio fingerprint maps, aiming to provide satisfactory location solutions for the complex environment.
Siqi Bai, Yongjie Luo, Qun Wan
doaj   +1 more source

Automatic Clustering for Improved Radio Environment Maps in Distributed Applications

open access: yesApplied Sciences, 2023
Wireless communication greatly contributes to the evolution of new technologies, such as the Internet of Things (IoT) and edge computing. The new generation networks, including 5G and 6G, provide several connectivity advantages for multiple applications,
Haithem Ben Chikha, Alaa Alaerjan
doaj   +1 more source

Novel radio environment map for the ns-3 NR simulator [PDF]

open access: yesProceedings of the Workshop on ns-3, 2021
Grant numbers : S3_LLNL - Spectrum Sharing Simulator Program project.
Koutlia, Katerina   +3 more
openaire   +2 more sources

Iteratively reweighted compressive sensing based algorithm for spectrum cartography in cognitive radio networks [PDF]

open access: yes, 2014
© 2014 IEEE. Spectrum cartography is the process of constructing a map showing Radio Frequency signal strength over a finite geographical area. In our previous work we formulated spectrum cartography as a compressive sensing problem and we illustrated ...
Dutkiewicz, E   +3 more
core   +1 more source

Semi-Supervised Learning for Indoor Hybrid Fingerprint Database Calibration With Low Effort

open access: yesIEEE Access, 2017
The interest of indoor localization based on the IEEE 802.11 wireless local area network signal increases remarkably to support pervasive computing applications, but the process of fingerprints calibration, which is point-by-point conducted manually, is ...
Mu Zhou   +3 more
doaj   +1 more source

Advanced real-time indoor tracking based on the Viterbi algorithm and semantic data [PDF]

open access: yes, 2015
A real-time indoor tracking system based on the Viterbi algorithm is developed. This Viterbi principle is used in combination with semantic data to improve the accuracy, that is, the environment of the object that is being tracked and a motion model. The
Joseph, Wout   +3 more
core   +3 more sources

EKF–GPR-Based Fingerprint Renovation for Subset-Based Indoor Localization with Adjusted Cosine Similarity

open access: yesSensors, 2018
Received Signal Strength Indicator (RSSI) localization using fingerprint has become a prevailing approach for indoor localization. However, the fingerprint-collecting work is repetitive and time-consuming.
Junhua Yang   +4 more
doaj   +1 more source

Early Quenching of Massive Protocluster Galaxies Around z=2.2 Radio Galaxies [PDF]

open access: yes, 2016
Radio galaxies are among the most massive galaxies in the high-redshift Universe and are known to often lie in protocluster environments. We have studied the fields of seven z = 2.2 radio galaxies with High Acuity Wide field K-band Imager (HAWK-I) narrow-
Bremer, Malcolm N.   +3 more
core   +4 more sources

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