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Distributed Transmit Power Control for Energy-Efficient Wireless-Powered Secure Communications
1Department of Information and Communication Engineering, Dongguk University, Seoul 04620, Korea.
Sensors (Basel, Switzerland)
|September 10, 2021
Summary
This study introduces a distributed algorithm for energy-efficient wireless secure communications. The method enhances secrecy energy efficiency without compromising energy harvesting, outperforming conventional approaches.
Area of Science:
- Wireless Communications
- Information Security
- Energy Harvesting
Background:
- Wireless networks face challenges in balancing energy efficiency and secure data transmission.
- Energy harvesting nodes require dedicated power without intercepting sensitive information.
Purpose of the Study:
- To maximize the sum secrecy energy efficiency (SEE) in wireless-powered secure communication systems.
- To ensure minimum energy harvesting (EH) requirements for each EH node.
- To develop a distributed transmit power control algorithm for enhanced system performance.
Main Methods:
- A distributed transmit power control algorithm based on a dual method was proposed.
- Transmitters iteratively adjust power until convergence, without inter-node information sharing.
- Simulations were conducted across various environmental conditions.
Main Results:
- The proposed distributed scheme significantly improved sum SEE compared to conventional methods.
- The algorithm demonstrated reduced computation time relative to the optimal scheme.
- The effectiveness of the distributed approach was validated through simulations.
Conclusions:
- The proposed distributed algorithm is effective for energy-efficient wireless-powered secure communications.
- The method offers a practical solution by balancing SEE maximization and EH requirements.
- The approach shows significant advantages in performance and computational efficiency.
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