Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Maximum Power Transfer01:16

Maximum Power Transfer

645
Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...
645
Pilot and Numeric Relaying01:21

Pilot and Numeric Relaying

222
Pilot relaying is a type of differential protection used in power systems. It compares electrical quantities at the terminals of equipment via a communication channel instead of direct relay interconnection. This method is essential for transmission lines where the terminals are far apart, typically up to 80 km for lines with 69 to 115 kV ratings. Four types of communication channels are used for pilot relaying:
222
The Maximum Power Transfer Theorem01:20

The Maximum Power Transfer Theorem

946
Consider a linear AC Thevenin equivalent circuit connected to a load impedance.
The load connected draws the current, and the circuit delivers the power to the load. The alternating current flowing through the load is determined using the rectangular form of voltages, currents, network impedance, and load impedance. The average power delivered to the load is obtained from the product of the square of current and load resistance.
946
The Midpoint Formula01:24

The Midpoint Formula

457
In coordinate geometry, determining the central point between two locations is common. This central point, or midpoint, lies exactly halfway along the line segment connecting two points in a two-dimensional space. It has applications in mathematics, physics, engineering, and various planning disciplines.Given two points labeled as A (x1, y1) and B (x2, y2) on a coordinate plane, a straight line segment can be plotted between them. The midpoint, labeled point M, divides this segment into two...
457
Directional Relays01:25

Directional Relays

437
Directional relays, essential for managing unidirectional fault currents, enhance the safety and efficiency of power systems. On power lines equipped with directional relays, faults downstream (to the right) of the current transformer typically cause the fault current to lag the bus voltage by approximately 90 degrees, known as the forward direction. In contrast, upstream (left-side) faults may result in the fault current leading the bus voltage by nearly 90 degrees, termed the reverse...
437
Line Protection with Impedance Relays01:27

Line Protection with Impedance Relays

317
Coordinating time-delay overcurrent relays in complex radial systems and directional overcurrent relays in multi-source transmission loops can be challenging. Impedance relays address these issues by responding to the voltage-to-current ratio, specifically measuring the apparent impedance of a line. These relays become more sensitive during faults as current increases and voltage decreases, thereby reducing the apparent impedance.
Under normal conditions, low load currents keep the measured...
317

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

A lipidomic and flavoromic approach to map the lipid profile and related volatile flavor compounds in the fresh breast meat of chickens fed curcumin.

Food chemistry: X·2026
Same author

Experimental study on the mechanical properties of fly ash stabilized bentonite via sodium hydroxide-geopolymerization process.

Scientific reports·2026
Same author

Astragaloside IV Enhances Anti-PD-L1 Immunotherapy in Triple-Negative Breast Cancer by Activating the cGAS-STING Pathway.

Drug development research·2026
Same author

Covert communications for dual-hop FSO-RF systems with NOMA.

Applied optics·2026
Same author

Wood Nanofibrillated Cellulose Aerogel for Sustainable Oil-Water Mixture Separation.

ACS applied materials & interfaces·2026
Same author

Electromagnetic situation awareness and modeling for space-air-ground integrated networks.

National science review·2026

Related Experiment Video

Updated: Nov 23, 2025

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
05:30

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit

Published on: September 8, 2023

947

Optimal Relay Selection Scheme with Multiantenna Power Beacon for Wireless-Powered Cooperation Communication

Oussama Messadi1, Aduwati Sali1, Vahid Khodamoradi1

  • 1Wireless and Photonic Networks Research Centre of Excellence (WiPNET), Department of Computer and Communication Systems Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.

Sensors (Basel, Switzerland)
|January 1, 2021
PubMed
Summary

A new two-round relay selection (2-RRS) scheme significantly improves wireless-powered cooperative communication networks by enhancing throughput and reducing outage probability. This novel approach optimizes relay selection for better performance compared to existing methods.

Keywords:
beamformingcooperative-networksenergy harvestingmulti-antennaspower-beaconrelay selection

More Related Videos

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar
07:14

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar

Published on: May 1, 2018

8.0K
Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band
06:43

Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band

Published on: May 2, 2018

7.3K

Related Experiment Videos

Last Updated: Nov 23, 2025

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
05:30

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit

Published on: September 8, 2023

947
Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar
07:14

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar

Published on: May 1, 2018

8.0K
Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band
06:43

Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band

Published on: May 2, 2018

7.3K

Area of Science:

  • Wireless communication networks
  • Cooperative communication systems
  • Energy harvesting and wireless power transfer

Background:

  • Traditional cooperative networks rely on reception reliability for relay selection.
  • Wireless-powered cooperative communication networks (WPCCNs) require consideration of both reliability and transmission requirements.
  • Efficient transmission techniques are needed to overcome radio frequency (RF) signal attenuation without increasing power.

Purpose of the Study:

  • To propose a novel relay selection scheme for wireless-powered cooperative communication networks assisted by a multi-antenna power beacon (PB-WPCCN).
  • To analyze and compare the performance of the proposed scheme against existing methods in terms of outage probability and system throughput.

Main Methods:

  • Introduction of a two-round relay selection (2-RRS) scheme: first round selects relays that decode information, second round selects the optimal relay.
  • Derivation of analytical closed-form expressions for outage probability and average system throughput.
  • Validation of analytical results through numerical simulations and comparison with Partial Relay Selection (PRS) and Opportunistic Relay Selection (ORS) schemes.

Main Results:

  • The proposed 2-RRS scheme achieves approximately 17% higher throughput than ORS and 40% higher than PRS, especially at 10 dB PB transmit power.
  • 2-RRS guarantees the lowest outage probability, particularly when the PB uses multi-antenna beamforming.
  • Optimal PB localization is scheme-dependent, and 2-RRS requires shorter energy harvesting time for maximum throughput, indicating necessary tradeoffs.

Conclusions:

  • The 2-RRS scheme offers superior performance in wireless-powered cooperative communication networks.
  • The study highlights the importance of considering transmission requirements alongside reliability in relay selection for WPCCNs.
  • Tradeoffs between energy harvesting time, number of relays, and system throughput must be carefully considered for optimal network design.