Wireless Information and Power Transfer

11Physical Layer Security in SWIPT Systems with Nonlinear Energy Harvesting Circuits

Yuqing Su¹, Derrick Wing Kwan Ng¹*, and Robert Schober²

¹School of Electrical Engineering and Telecommunications, The University of New South Wales, Australia

²Institute for Digital Communications, Friedrich‐Alexander‐University Erlangen‐Nuremberg (FAU), Germany

11.1 Introduction

In recent decades the rapid development of wireless communication technologies has triggered a massive growth in the number of wireless communication devices and sensors for emerging applications such as video‐conferencing, e‐health, entertainment, smart city, and energy management, etc. Moreover, the popularity of wireless communication systems has fueled the roll‐out of the Internet of Things (IoT) [1]. Thereby, wireless communication modules are unobtrusively and invisibly integrated into physical objects such as clothing, walls, and vehicles, which are connected to advanced computing systems (e.g., cloud computing) to provide intelligent services in daily life. It is expected that by 2020 the number of devices interconnected via the Internet may reach up to 50 billion. However, this tremendous increase in the number of devices has also led to a huge demand for energy at both service operators and end‐users. As a result, providing self‐sustainable and high speed communication with guaranteed quality of service (QoS) has become a major goal for the next generation communication systems [2, 3].

Recently, various green ...