Multitone PSK Modulation Design for Simultaneous Wireless Information and Power Transfer

Abstract

Far-field wireless power transfer, based on radio frequency (RF) waves, came into the picture to fulfill the power need of large Internet of Things (IoT) networks, the backbone of the 5G and beyond era. However, RF communication signals carry both information as well as energy. Therefore, recently, simultaneous wireless information and power transfer (SWIPT) has attracted much attention in order to wirelessly charge these IoT devices. In this paper, we propose a novel N -tone multitone phase shift keying (PSK) modulation scheme, taking advantage of the non-linearity of integrated receiver rectifier architecture. The main advantage of the proposed modulation scheme is the reduction in ripple voltage, introduced by the symbol transmission through phases. Achievable power conversion efficiency (PCE) and bit error rate (BER) at the output are considered to measure the efficacy of the proposed modulation scheme. Simulation results are verified by the measurements over the designed rectifier circuitry. The effect of symbol phase range, modulation order, and the number of tones are analyzed. In the future, this transmission scheme can be utilized to satisfy the data and power requirements of low-power Internet of Things sensor networks.

Spectrum Sensing, Clustering Algorithms, and Energy-Harvesting Technology for Cognitive-Radio-Based Internet-of-Things Networks

“…The sensor nodes are self-governing and articulate an intercommunication topology in an improvised way, but have limited resources for energy administration, processing power, and data storage and sharing. Radio-frequency-based far-field wireless power transfer can optimize extensive IoT network power [ 102 ], but as radio frequency communication signals integrate both information and energy, simultaneous wireless information and power transfer can wirelessly charge IoT devices. Cognitive and software-defined radio enhance spectrum use and optimize the leverage of frequency bands between users [ 103 ], as there is an incessant request for wireless devices that can adjust to various channel features, while functioning on high distribution data-rates deploying heterogeneous communication bands.…”