Optimal Resource Allocation in Full-Duplex Wireless-Powered Communication Network

By Hyungsik Ju, Rui Zhang. IEEE Transactions on Communications, 2014

352 citations recorded by the source corpus.

This paper studies optimal resource allocation in the wireless-powered communication network (WPCN), where one hybrid access point (H-AP) operating in full duplex (FD) broadcasts wireless energy to a set of distributed users in the downlink (DL) and, at the same time, receives independent information from the users via time-division multiple access in the uplink (UL). We design an efficient protocol to support simultaneous wireless energy transfer (WET) in the DL and wireless information transmission (WIT) in the UL for the proposed FD-WPCN. We jointly optimize the time allocations to the H-AP for DL WET and different users for UL WIT and the transmit power allocations over time at the H-AP to maximize the users' weighted sum rate of UL information transmission with harvested energy. We consider both the cases with perfect and imperfect self-interference cancellation (SIC) at the H-AP, for which we obtain optimal and suboptimal time and power allocation solutions, respectively. Furthermore, we consider the half-duplex (HD) WPCN as a baseline scheme and derive its optimal resource allocation solution. Simulation results show that the FD-WPCN outperforms the HD-WPCN when effective SIC can be implemented and more stringent peak power constraint is applied at the H-AP.

Subfields: Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/0f8ce014d2d959263c500b72072de4bcddc7bfbc

How researchers see this paper

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In Electrical and Electronic Engineering

1. Rui Zhang
2. Dong In Kim
3. Yong Zeng
4. Dusist Niyato
5. Ekram Hossain
6. Suzhi Bi
7. Zhu Han
8. Shree Krishna Sharma

Citations in the corpus

• 5G cellular: key enabling technologies and research challenges (2015, background): “, [10], [11]) to minimize SI in the HAPs.”
• Full-Duplex Wireless-Powered Relay With Self-Energy Recycling (2014, background): “In [8] and [9], a time switching-based full-duplex wireless-powered transmission/relaying system is studied, where the source/relay node operates in full-duplex mode with simultaneous information reception and energy/information transmission.”
• Wireless powered communication networks: an overview (2015, background): “2(d), another promising solution for in-band approach is to use full-duplex HAP, which is able to transmit energy and receive information to/from WDs simultaneously in the same frequency band [11].”
• Wireless Charging Technologies: Fundamentals, Standards, and Network Applications (2015, background): “Both [276] and [277] aimed to maximize the weighted sum-throughput of the network.”
• 5G-Advanced Toward 6G: Past, Present, and Future (2023, background): “…being eavesdropped) [211]; • Wireless power transfer, where simultaneous wireless energy transfer (e.g., via DL) and wireless information transfer (e.g., via UL) can be supported, which is important for energy-constrained wireless communication systems (e.g., wireless sensor networks) [212].”
• Simultaneous Wireless Information and Power Transfer (SWIPT): Recent Advances and Future Challenges (2018, background): “In full-duplex hybrid access point topology, information transmit to users using uplink and received energy to users from downlink channel simultaneously was studied in [45] and [100]–[102].”