Results 41 to 50 of about 610,834 (327)

Optimizing power consumption of Wi-Fi inbuild IoT device : an MSP430 processor and an ESP-03 chip provide a power-efficient solution [PDF]

open access: yes, 2016
The Internet of Things (IoT) -- connection of small smart sensors, actuators and other devices to the Internet -- is a key concept within the smart home. To ease deployment, such devices are often wireless and battery powered.
Irvine, James   +3 more
core   +1 more source

Coordinated Dynamic Spectrum Management of LTE-U and Wi-Fi Networks

open access: yes, 2015
This paper investigates the co-existence of Wi-Fi and LTE in emerging unlicensed frequency bands which are intended to accommodate multiple radio access technologies.
Baysting, Samuel   +5 more
core   +1 more source

Enhancing Coexistence in the Unlicensed Band with Massive MIMO

open access: yes, 2017
We consider cellular base stations (BSs) equipped with a large number of antennas and operating in the unlicensed band. We denote such system as massive MIMO unlicensed (mMIMO-U).
Bonfante, Andrea   +5 more
core   +1 more source

An Indoor Continuous Positioning Algorithm on the Move by Fusing Sensors and Wi-Fi on Smartphones

open access: yesSensors, 2015
Wi-Fi indoor positioning algorithms experience large positioning error and low stability when continuously positioning terminals that are on the move. This paper proposes a novel indoor continuous positioning algorithm that is on the move, fusing sensors
Huaiyu Li   +7 more
doaj   +1 more source

Estimating bus passenger volume based on a Wi-Fi scanner survey

open access: yesTransportation Research Interdisciplinary Perspectives, 2020
The main objective of this study is to estimate bus passenger volume based on a Wi-Fi scanner transportation survey. The study proposes a new data cleaning procedure to characterize bus passenger volume using a combination of media access control (MAC ...
Arief Hidayat   +2 more
doaj   +1 more source

Wi-Fi Teeter-Totter: Overclocking OFDM for Internet of Things

open access: yes, 2018
The conventional high-speed Wi-Fi has recently become a contender for low-power Internet-of-Things (IoT) communications. OFDM continues its adoption in the new IoT Wi-Fi standard due to its spectrum efficiency that can support the demand of massive IoT ...
He, Shiyue   +4 more
core   +1 more source

Human Activity Recognition via Wi-Fi and Inertial Sensors With Machine Learning

open access: yesIEEE Access
Human activity recognition (HAR) plays a crucial role in human-computer interaction, smart home, health monitoring and elderly care. However, existing methods typically utilize camera, radio frequency (RF) signals or wearable devices for activity ...
Wei Guo, Shunsei Yamagishi, Lei Jing
semanticscholar   +1 more source

A Wi-Fi-Based Passive Indoor Positioning System via Entropy-Enhanced Deployment of Wi-Fi Sniffers

open access: yesSensors, 2023
This study presents a Wi-Fi-based passive indoor positioning system (IPS) that does not require active collaboration from the user or additional interfaces on the device-under-test (DUT).
Poh Yuen Chan   +2 more
doaj   +1 more source

Spatial Resource Allocation for Spectrum Reuse in Unlicensed LTE Systems

open access: yes, 2017
In this paper, we study how to reuse the unlicensed spectrum in LTE-U systems while guaranteeing harmonious coexistence between the LTE-U and Wi-Fi systems.
Li, Geoffrey Ye, Maaref, Amine, Yin, Rui
core   +1 more source

Analysis of the electromagnetic environment of internet of things devices indoors [PDF]

open access: yes, 2002
У статті досліджено електромагнітну обстановку в приміщенні офісу, де розташовано три приймально-передавальні Wi-Fi пристрої (IoT модулі, точки доступу, або маршрутизатори).
Пілінський, Володимир Володимирович   +2 more
core   +1 more source

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