Secrecy Wireless Information and Power Transfer: Challenges and Opportunities

Abstract

Wireless information and power transfer (WIPT) enables more sustainable and resilient communications owing to the fact that it avoids frequent battery charging and replacement. However, it also suffers from possible information interception due to the open nature of wireless channels. Compared to traditional secure communications, secrecy wireless information and power transfer (SWIPT) carries several distinct characteristics. On one hand, wireless power transfer may increase the vulnerability of eavesdropping, since a power receiver, as a potential eavesdropper, usually has a shorter access distance than an information receiver. On the other hand, wireless power transfer can be exploited to enhance wireless security. This article reviews the security issues in various SWIPT scenarios, with an emphasis on revealing the corresponding challenges and opportunities for implementing SWIPT. Furthermore, we provide a survey on a variety of physical layer security techniques to improve secrecy performance. In particular, we propose to use massive multiple-input multiple-output (MIMO) techniques to enhance power transfer efficiency and secure information transmission simultaneously. Finally, we discuss several potential research directions to further enhance the security in SWIPT systems.

19 pages, 6 figures, IEEE Wireless Communications, 2016

References in corpus (3)

• Enhancing Wireless Information and Power Transfer by Exploiting Multi-Antenna Techniques
• Multi-Antenna Relay Aided Wireless Physical Layer Security
• Secure Wireless Information and Power Transfer in Large-Scale MIMO Relaying Systems with Imperfect CSI

Cited by in corpus (10)

• Covert Transmission with a Self-sustained Relay
• Robust Chance-Constrained Optimization for Power-Efficient and Secure SWIPT Systems
• Security in Energy Harvesting Networks: A Survey of Current Solutions and Research Challenges
• Robust Secure Transmission of Using Main-Lobe-Integration Based Leakage Beaforming in Directional Modulation MU-MIMO Systems
• Downlink Secrecy Rate of One-Bit Massive MIMO System with Active Eavesdropping
• Interference Exploitation via Symbol-Level Precoding: Overview, State-of-the-Art and Future Directions
• Secure SWIPT for Directional Modulation Aided AF Relaying Networks
• Exploiting Interference for Secrecy Wireless Information and Power Transfer
• Artificial-Noise-Aided Secure Transmission with Directional Modulation based on Random Frequency Diverse Arrays
• Secrecy Outage of SWIPT in the Presence of Cooperating Eavesdroppers