Results 21 to 30 of about 1,079 (170)

Designing an Ultra-Low-Power RTU for Use in NB-IoT Water Applications [PDF]

open access: yesMATEC Web of Conferences, 2019
This paper presents the design and realization of a ultra-low-power and low-cost remote transfer unit (RTU), working as an outdoor gateway for collecting hydrographic data, such as rainfall, water flow rate, water quality, etc.
Ganchev Ivan   +2 more
doaj   +1 more source

Channel Estimation Optimization Model in Internet of Things Based on MIMO/OFDM with Deep Extended Kalman Filter [PDF]

open access: yesAdvances in Engineering and Intelligence Systems, 2022
Channel estimation plays a vital role in the performance of wireless communication systems. However, apart from the usual OFDM modes, there are also orthogonal conditions for modulationbased multi-channel systems, which make channel estimation on ...
Van Tinh Shi, Dong Ren Nhg
doaj   +1 more source

A Joint Low-Power Cell Search and Frequency Tracking Scheme in NB-IoT Systems for Green Internet of Things

open access: yesSensors, 2018
As a dedicated communication protocol for Internet-of-Things, narrowband internet of things (NB-IoT) needs to establish the communication link rapidly and reduce retransmissions as much as possible to achieve low power consumption and stable performance.
Yu Li   +3 more
doaj   +1 more source

Embodied Intelligence for Soil Health toward Sustainable Smart Agriculture: Sensing the Soil with Flexible Geotextiles Sensors. [PDF]

open access: yesGlob Chall
This review examines the transition from rigid to flexible soil sensing technologies in the context of soil as a dynamic and heterogeneous environment. By integrating sensor types, sensing modalities, materials, fabrication and deployment strategies, and IoT‐enabled energy and communication approaches, it highlights geotextiles as scalable sensing ...
Yilmaz AF   +7 more
europepmc   +2 more sources

A survey on LPWA technology: LoRa and NB-IoT

open access: yesICT Express, 2017
By 2020, more than twenty five billion devices would be connected through wireless communications. In accordance with the rapid growth of the internet of things (IoT) market, low power wide area (LPWA) technologies have become popular.
Rashmi Sharan Sinha   +2 more
doaj   +1 more source

Structural Health Monitoring system with Narrowband IoT and MEMS sensors [PDF]

open access: yesIEEE Sensors Journal, 2021
We propose a low-cost wireless sensor node specifically designed to support modal analysis over extended periods of time with long-range connectivity at low power consumption. Our design uses very cost-effective MEMS accelerometers and exploits the Narrowband IoT protocol (NB-IoT) to establish long-distance connection with 4G infrastructure networks ...
Flavio Di Nuzzo   +3 more
openaire   +3 more sources

Evaluation of the Use of M2M-Type NB-IoT and LTE Technologies for Maritime Communication Systems

open access: yesPolish Maritime Research, 2023
The development of IoT (the Internet of Things) wireless transmission opens a new era in communication systems. In the next years, the development and implementation of IoT systems will be very dynamic.
Gajewski Slawomir   +2 more
doaj   +1 more source

A Narrow-Band Indoor Positioning System by Fusing Time and Received Signal Strength via Ensemble Learning

open access: yesIEEE Access, 2018
The Internet of Things (IoT) is an emerging paradigm to integrate the physical world into cyber systems by connecting various devices, which sense and control the surrounding objects.
Zan Li   +5 more
doaj   +1 more source

Narrowband IoT: A Greener Solution for Large Scale Deployments

open access: yesEAI Endorsed Transactions on Internet of Things, 2022
Internet of things (IoT) has become a pervasive technology with ubiquitous presence in the modern digital ecosystem. Several types of IoT are available in the recent years based on their features and applications.
Sudhir K. Routray, Sasmita Mohanty
doaj   +1 more source

Combining LoRaWAN and NB-IoT for Edge-to-Cloud Low Power Connectivity Leveraging on Fog Computing

open access: yesApplied Sciences, 2022
Low Power Wide Area Networks (LPWANs) play crucial roles in the implementation of low-power and low-cost wide area distributed systems. Currently, two enabling technologies are the main competitors within the connectivity field for the Internet of Things
Giacomo Peruzzi, Alessandro Pozzebon
doaj   +1 more source

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