Results 21 to 30 of about 618,188 (265)
Crystals, 2023 A frequency magnetically tunable perfect absorber based on graphene in the terahertz (THz) region is proposed. The performance is analysed using the 4 × 4 transfer matrix method, demonstrating that the perfect absorption frequency of the proposed ...
Zhenyan Wei, Yannan Jiang, Jiao Wang
doaj +1 more source
Design and control of a bidirectional wireless charging system using GaN devices [PDF]
, 2019 Most of the existing wireless power transfer system works in unidirectional with one-direction control signals. This paper presents a bidirectional wireless charging system with duplex communication method, which is not only able to achieve the two-way ...
Gu, Bowen +4 more
core +2 more sources
Wireless actuation of bulk acoustic modes in micromechanical resonators [PDF]
, 2016 We report wireless actuation of a Lamb wave micromechanical resonator from a distance of over 1 m with an efficiency of over 15%. Wireless actuation of conventional micromechanical resonators can have broad impact in a number of applications from ...
Brown, Benjamin +3 more
core +1 more source
Enhanced LoRaWAN Adaptive Data Rate for Mobile Internet of Things Devices
Sensors, 2020 A long-range wide area network (LoRaWAN) is one of the leading communication technologies for Internet of Things (IoT) applications. In order to fulfill the IoT-enabled application requirements, LoRaWAN employs an adaptive data rate (ADR) mechanism at ...
Arshad Farhad +3 more
doaj +1 more source
The Topology of Wireless Communication [PDF]
, 2011 In this paper we study the topological properties of wireless communication maps and their usability in algorithmic design. We consider the SINR model, which compares the received power of a signal at a receiver against the sum of strengths of other ...
Kantor, Erez +3 more
core +1 more source
On the Security of Ultrasound as Out-of-band Channel [PDF]
, 2007 Ultrasound has been proposed as out-of-band channel for authentication of peer devices in wireless ad hoc networks. Ultrasound can implicitly contribute to secure communication based on inherent limitations in signal propagation, and can additionally be ...
Gellersen, Hans, Mayrhofer, Rene
core +1 more source
Waveform Optimization for Wireless Power Transfer with Nonlinear Energy Harvester Modeling
, 2015 Far-field Wireless Power Transfer (WPT) and Simultaneous Wireless Information and Power Transfer (SWIPT) have attracted significant attention in the RF and communication communities.
Bayguzina, Ekaterina +3 more
core +1 more source
A Comprehensive Survey of RAN Architectures Toward 5G Mobile Communication System
IEEE Access, 2019 The fifth generation (5G) of mobile communication system aims to deliver a ubiquitous mobile service with enhanced quality of service (QoS). It is also expected to enable new use-cases for various vertical industrial applications—such as ...
Mohammad Asif Habibi +3 more
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Deep Learning Framework for Wireless Systems: Applications to Optical Wireless Communications
, 2018 Optical wireless communication (OWC) is a promising technology for future wireless communications owing to its potentials for cost-effective network deployment and high data rate.
Lee, Hoon +3 more
core +1 more source
Beamspace Spatial Smoothing MUSIC DOA Estimation Method Using Dynamic Metasurface Antenna
EntropyThe Direction-of-Arrival (DOA) estimation method using traditional array antennas cannot dynamically adjust the observation angle range based on the Region of Interest (ROI), which leads to limited estimation accuracy and high computational complexity ...
Lilong Hou +5 more
doaj +1 more source