Results 1 to 10 of about 15,145,789 (254)

Time Switching Based Wireless Powered Relay Transmission with Uplink NOMA [PDF]

open access: yesSensors, 2021
Non-orthogonal multiple access (NOMA) utilizes power domain multiplexing to improve spectrum efficiency compared with orthogonal multiple access (OMA). In the Internet of Things (IoT) uplink NOMA networks, if the channel between the far-end node and the ...
Zhihua Lin, Shihua Cao, Jianqing Li
doaj   +2 more sources

Dynamic Power Splitting Simultaneous Wireless Information and Power Transfer Split Receiver for Wireless Sensor Networks

open access: yesIEEE Access, 2021
Simultaneous wireless information and power transfer (SWIPT) presents a genuine opportunity toward achieving sustainable low-energy wireless devices. This paper introduces a receiver design for an energy harvesting sensor node (SN).
Amar Esse   +3 more
doaj   +1 more source

Energy Efficiency Optimization for SWIPT-Enabled IoT Network with Energy Cooperation

open access: yesSensors, 2022
As an advanced technology, simultaneous wireless information and power transfer (SWIPT), combined with the internet of things (IoT) devices, can effectively extend the online cycle of the terminal. To cope with the fluctuation of energy harvesting by the
Yang Cao   +4 more
doaj   +1 more source

Joint TS Beamforming and Hybrid TS-PS Receiving Design for SWIPT Systems

open access: yesIEEE Access, 2021
Simultaneously wireless information and power transfer technology enables information and energy to be transmitted over the same radio frequency (RF) signal.
Shiqi Wang, Lin Ma, Wei Wu
doaj   +1 more source

Rate-Energy Tradeoffs of Wireless Powered Backscatter Communication With Power Splitting and Time Switching

open access: yesIEEE Access, 2021
We consider a monostatic wireless powered backscatter communication (WPBC) system, where a device performs backscatter modulation and energy harvesting (EH) using the received signal from a multi-antenna hybrid access point.
Gerardo Sacarelo, Yun Hee Kim
doaj   +1 more source

System Performance Analysis for an Energy Harvesting IoT System Using a DF/AF UAV-Enabled Relay with Downlink NOMA under Nakagami-m Fading

open access: yesSensors, 2021
This paper investigates system performance in the Internet of Things (IoT) with an energy harvesting (EH) unmanned aerial vehicle (UAV)-enabled relay under Nakagami-m fading, where the time switching (TS) and adaptive power splitting (APS) protocols are ...
Anh-Nhat Nguyen   +3 more
doaj   +1 more source

Energy enhancement and efficient route selection mechanism using H-SWIPT for multi-hop IoT networks

open access: yesIntelligent and Converged Networks, 2022
Simultaneous wireless information and power transfer (SWIPT) is recently emerging as one of the vital solutions to prolong the lifetime of energy constrained wireless sensor nodes.
B. Pavani   +2 more
doaj   +1 more source

Micromagnetics of Microwave-Assisted Switching in Co-Pt-Based Nanostructures: Switching Time Minimization

open access: yesMagnetism, 2023
Microwave-assisted switching (MAS) is simulated for different CoPt and CoPt/Co3Pt nanosrtuctures as a function of applied DC field and microwave frequency. In all the cases, the existence of microwave excitation can lower the switching field by more than
Christos Thanos, Ioannis Panagiotopoulos
doaj   +1 more source

Convergence analysis of proportional-derivative -type ILC for linear continuous constant time delay switched systems with observation noise and state uncertainties [PDF]

open access: yesJournal of Hyperstructures, 2023
This article is concerned with the linear continuous time delay switching system with state uncertainties and observa-tion noise. The goal of this study is to investigate how an internal switching mechanism and the efficacy of a conventional proportional-
Omprakash Dewangan
doaj   +1 more source

Transceiver Optimization for DF MIMO Relay Systems With a Wireless Powered Relay Node

open access: yesIEEE Access, 2019
In this paper, a two-hop decode-and-forward (DF) multiple-input multiple-output (MIMO) relay system is investigated, where the relay node harvests the radio frequency energy transmitted by the source node and uses the harvested energy to forward ...
Bin Li   +5 more
doaj   +1 more source

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