Full-duplex wireless information and power transfer in two-way relaying networks with self-energy recycling
- PDF / 1,860,426 Bytes
- 16 Pages / 595.276 x 790.866 pts Page_size
- 12 Downloads / 213 Views
(0123456789().,-volV)(0123456789().,-volV)
Full-duplex wireless information and power transfer in two-way relaying networks with self-energy recycling Rajeev Kumar1
•
Ashraf Hossain1
Ó Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract In this paper, we consider full-duplex (FD) two-way relaying networks, where wireless power transfers from hybrid power access-point, H to user and wireless information transmits from user to H via relay. We propose FD-based power splitting (PS) and time-switching (TS) protocols which enables the energy harvesting (EH) and information processing at relay. These protocols overcome the limitation of spectral efficiency and in band self-interference caused by half-duplex relaying and operation of FD respectively. The energy constraint nodes such as relay and user harvest energy from H by radiofrequency signal, where relay also harvests energy by self-energy recycling. The optimal PS ratio and the optimal TS ratio are investigated and expressed in closed-form. With Rayleigh fading channel, we derive the end-to-end ergodic capacity for PS and TS protocols. Numerical results show that our proposed FD-based EH schemes outperform the benchmark schemes significantly. In particular, the PS protocol is superior to TS protocol at high transmit power of H while at low transmit power of H, TS protocol is better than the PS protocol. Keywords Two-way full-duplex relaying network Energy-harvesting Power-splitting protocol Time-switching protocol End-to-end ergodic capacity
1 Introduction Green wireless communication has been fascinated great interest in the investigation of energy harvesting (EH) and information relaying in recent years. With pioneering growth of data services, the power demand for wireless device is constantly increasing that can lead to battery depletion problem. To overcome the battery depletion problem, EH is a promising green technology to provide effective power supply to wireless devices. The EH components and power management circuits have been studied [1], where energy is harvested with the help of RF signal, motion and vibration, temperature difference, and photovoltaic cells. In some practical applications such as cellular & Rajeev Kumar [email protected]; [email protected] Ashraf Hossain [email protected] 1
Department of Electronics and Communication Engineering, National Institute of Technology Silchar, Silchar, Assam 788010, India
communications and wireless sensor network, the EH technique is used to improve the efficiency and the lifetime of entire communication system. With RF signal, the EH is state-of-the-art in green wireless communication to provide energy efficient wireless networks. It can be classified into three categories. In first approach, ideal receiver design is able to tradeoff transmitting energy and transmitting information simultaneously using a capacity-energy function [2]. The information rate has been maximized with minimum energy constraints for a single point-to-point channel [2, 3] for
Data Loading...
