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Related Concept Videos

Maximum Power Transfer01:16

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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.
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Consider a linear AC Thevenin equivalent circuit connected to a load impedance.
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Related Experiment Video

Updated: Oct 3, 2025

Automated Deployment of an Internet Protocol Telephony Service on Unmanned Aerial Vehicles Using Network Functions Virtualization
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Optimal power allocation for a wireless cooperative network with UAV.

Jing Yan1,2, Xuefeng Deng2, Jihua Liu3

  • 1National Key Laboratory of Electronic Test Technology, North University of China, Taiyuan, Shanxi, China.

Peerj. Computer Science
|February 17, 2022
PubMed
Summary

This study optimizes power allocation in Unmanned Aerial Vehicle (UAV) cooperative wireless networks. The proposed strategy enhances system reliability by minimizing outage probability and conserving energy.

Keywords:
Outage probabilityPower allocationRelay networkUAV

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Area of Science:

  • Wireless Communication
  • Network Engineering
  • Robotics

Background:

  • Unmanned Aerial Vehicle (UAV) networks are increasingly used for wireless communication.
  • Cooperative relaying enhances network performance but requires efficient power management.
  • Decode and Forward (DF) is a common relaying strategy.

Purpose of the Study:

  • To investigate optimal power allocation strategies for UAV cooperative wireless DF relay networks.
  • To minimize system outage probability under total power constraints.
  • To minimize power consumption while maintaining a specific outage probability threshold.

Main Methods:

  • Derivation of outage probability with and without diversity gain.
  • Convex optimization using the Lagrange multiplier method for minimizing outage probability.
  • Newton iterative method for diversity gain systems.
  • Development of an effective method for non-convex optimization problems to ensure outage probability thresholds.

Main Results:

  • Optimal power allocation strategy reduces system outage probability and improves reliability.
  • Explicit expressions for optimal power allocation were derived for systems without diversity.
  • A relationship between UAV and source node transmit power was established for diversity systems.
  • Simulation results validated the effectiveness of the proposed algorithms.

Conclusions:

  • The developed optimal power allocation strategies significantly enhance the performance and reliability of UAV cooperative wireless DF relay networks.
  • The methods provide efficient solutions for both minimizing outage probability and conserving energy resources.