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Order-Aware Energy Recycling for Backscatter-Aided Wireless-Powered Cooperative Communications
Yuan Zheng1, Dongqing Li2, Huan Wan3,4
1School of Integrated Circuits, Shenzhen Polytechnic University, Shenzhen 518055, China.
Sensors (Basel, Switzerland)
|July 28, 2026
Summary
This study optimizes wireless sensor networks by coordinating transmission order for energy recycling. The proposed method enhances throughput fairness and minimum data rates for energy-constrained devices.
Area of Science:
- Wireless communication networks
- Energy harvesting and management
Background:
- Energy-constrained wireless devices require efficient power management for data transmission.
- Wireless-powered sensor networks (WPSNs) face challenges in balancing data delivery and energy consumption.
Purpose of the Study:
- To optimize throughput fairness in a wireless-powered sensor network (WPSN) with a hybrid access point (HAP).
- To investigate the impact of transmission order on energy recycling and data throughput.
Main Methods:
- Formulated a max-min throughput optimization problem considering source transmission order, time, and power allocation.
- Developed a scheme that jointly utilizes passive backscatter communication and active uplink transmissions.
- Transformed resource allocation into a convex problem for a given order and searched for the optimal order.
Main Results:
- The proposed scheme achieves higher minimum throughput compared to existing methods.
- Order-aware energy recycling significantly improves network performance and fairness.
- Joint optimization of passive collection, relay forwarding, and energy recycling is beneficial.
Conclusions:
- The proposed transmission order optimization effectively enhances throughput fairness in WPSNs.
- Order-dependent RF energy recycling is a viable strategy for energy-constrained wireless devices.
- The scheme demonstrates the advantages of integrated passive and active communication strategies.
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