Results 21 to 30 of about 27,167 (293)

Reinforcement Learning for Energy-Efficient 5G Massive MIMO: Intelligent Antenna Switching

open access: yesIEEE Access, 2021
To provide users with high throughputs, the fifth generation (5G) and beyond networks are expected to utilize the Massive Multiple-Input Multiple-Output technology (MMIMO), i.e., large antenna arrays. However, additional antennas require the installation
Marcin Hoffmann, Pawel Kryszkiewicz
doaj   +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

Propagation Attenuation Maps Based on Parabolic Equation Method

open access: yesSensors, 2022
Modern wireless communication systems use various technological solutions to increase the efficiency of created radio networks. This efficiency also applies to radio resources.
Michał Kryk   +2 more
doaj   +1 more source

Beyond REM: A New Approach to the Use of Image Classifiers for the Management of 6G Networks

open access: yesSensors, 2023
The management of cellular networks, particularly within the environment rapidly advancing to 6G, presents considerable challenges due to the highly dynamic radio environment. Traditional tools such as Radio Environment Maps (REMs) have proven inadequate
Eduardo Baena   +4 more
doaj   +1 more source

Wi-Fi-Based Effortless Indoor Positioning System Using IoT Sensors

open access: yesSensors, 2019
Wi-Fi positioning based on fingerprinting has been considered as the most widely used technology in the field of indoor positioning. The fingerprinting database has been used as an essential part of the Wi-Fi positioning system.
Muhammad Usman Ali   +2 more
doaj   +1 more source

Application of Radio Environment Map Reconstruction Techniques to Platoon-based Cellular V2X Communications

open access: yesSensors, 2020
Vehicle platoons involve groups of vehicles travelling together at a constant inter-vehicle distance, with different common benefits such as increasing road efficiency and fuel saving.
Sandra Roger   +3 more
doaj   +1 more source

Crowdsourcing-Assisted Radio Environment Database for V2V Communication

open access: yesSensors, 2018
In order to realize reliable Vehicle-to-Vehicle (V2V) communication systems for autonomous driving, the recognition of radio propagation becomes an important technology.
Keita Katagiri, Koya Sato, Takeo Fujii
doaj   +1 more source

Binary Radio Tomographic Imaging in Factory Environments Based on LOS/NLOS Identification

open access: yesIEEE Access, 2023
Radio tomographic imaging (RTI) is a technique for estimating spatial loss fields (SLFs), which maps the quantified attenuation of radio signals at every spatial location within monitored regions.
Takahiro Matsuda   +4 more
doaj   +1 more source

A Statistical Calibration Method of Propagation Prediction Model Based on Measurement Results [PDF]

open access: yesInternational Journal of Electronics and Telecommunications, 2020
Radio environment maps (REMs) are beginning to be an integral part of modern mobile radiocommunication systems and networks, especially for ad-hoc, cognitive, and dynamic spectrum access networks.
Jan M. Kelner   +3 more
doaj   +1 more source

Radio Environment Map for the Cognitive Radio Network Simulator

open access: yesInternational Journal of Electronics and Telecommunications, 2018
Military wireless tactical systems has faced the problem of limited spectrum resources. This is a reason why Cognitive Radio (CR) is one of the most popular topic studied by research institutes in the field of mobile telecommunications. CR technology is based on cognitive cycle, used for making decisions based on observation and orientation.
Piotr Bednarek   +2 more
openaire   +2 more sources

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