Wireless information and power transfer: from scientific hypothesis to engineering practice

Abstract

Recently, there has been substantial research interest in the subject of simultaneous wireless information and power transfer (SWIPT) due to its cross-disciplinary appeal and its wide-ranging application potential, which motivates this overview. More explicitly, we provide a brief survey of the state of the art and introduce several practical transceiver architectures that may facilitate its implementation. Moreover, the most important link-level as well as system-level design aspects are elaborated on, along with a variety of potential solutions and research ideas. We envision that the dual interpretation of RF signals creates new opportunities as well as challenges requiring substantial research, innovation and engineering efforts.

Performance Analysis of Non-Linear Generalized Pre-Coding Aided Spatial Modulation

“…The basic benefits of MIMO have also been further exploited in the context of the Network MIMO [5], cooperative MIMO [6], massive MIMO [7] and interferencelimited MIMO [8] concepts. Their applications have also been expanded to the areas of cognitive radio [9], physical-layer security [10], [11] and wireless powered communications [12].…”

“…By contrast, the complexity of the decoupled detection is imposed by detecting the N a conventional modulated symbols of (13), plus the complexity (κ) imposed by the comparisons invoked for non-coherently detecting the spatial symbol of (12), which may be written as O(N a M + κ). More details can be found in [18].…”

Information and Energy Transmission With Experimentally Sampled Harvesting Functions

“…Information-theoretic investigation in this direction started in [1], and has now spawned hundreds of results in the wireline [2] and especially the wireless setting (referred to as SWIPT (simultaneous wireless information and power transmission) in literature), see e.g. [3], [4] for recent surveys. These classes of problems are important for sensor networks, Internet of Things (IoT), and similar settings where terminals may require energy.…”

Alternative Expressions for Mutual Inductance and Coupling Coefficient Applied in Wireless Power Transfer

“…They successfully lit a 60-W bulb at a distance of 7 feet-more than 2 m using helical coils of high Q-factor (= ω 0 L/R). Since then, numerous papers have investigated theoretical [2,3] and practical [4,5] evolutions of WPT systems. The transfer efficiency of WPT systems has been well known to depend on the figure of merit, defined as the product of the Q-factor (the geometric mean of Q 1 and Q 2 ) and the coupling coefficient (k), and the load resistance.…”