Results 31 to 40 of about 221,208 (266)

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

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

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

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

SPG4 and Dementia: Expanding the Clinical Spectrum

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Hereditary spastic paraplegia (HSP) is a group of disorders characterized by progressive spasticity and lower limb weakness, with mutations in SPG4/SPAST being the most common cause. Detailed studies and clinical and molecular comparisons across different populations are missing.
Emanuele Panza   +19 more
wiley   +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

Smart Face Masks as Wearable Respiratory Sensors: A Review of Sensor Technologies, Materials, and Future Directions

open access: yesAdvanced Healthcare Materials, EarlyView.
This review highlights recent advances in smart face masks that actively monitor breathing. By integrating humidity, gas, temperature, pressure, strain, and triboelectric sensors, these masks track key respiratory parameters in real time. The article summarizes sensor mechanisms, compares performance across studies, and discusses challenges and future ...
Negin Faramarzi   +7 more
wiley   +1 more source

Lightweight Wi-Fi Frame Detection for Licensed Assisted Access LTE

open access: yesIEEE Access, 2019
Licensed assisted access LTE (LAA-LTE) aggregates 5 GHz unlicensed bands with LTE's licensed bands via carrier aggregation, and adopts energy detection (ED)-based clear channel assessment (CCA) for protection of coexisting Wi-Fi devices.
Sung-Tae Hong   +3 more
doaj   +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

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