Simultaneous Mobile Information and Power Transfer by Resonant Beam

Mingqing Liu, Hao Deng, Qingwen Liu, Jie Zhou, Mingliang Xiong, Liuqing Yang, Georgios B. Giannakis

Research output: Contribution to journalArticlepeer-review

Abstract

Simultaneous lightwave information and power transfer (SLIPT) has been regarded as one of the enabling technologies to enhance the battery-life and data-rate for mobile electronics in the Internet of things (IoT). The existing SLIPT schemes face the challenge of achieving narrow beam transmission and mobile receiver positioning simultaneously. In this paper, we propose a simultaneous mobile information and power transfer (SMIPT) approach using the energy-concentrated resonant beam, which can realize self-alignment with the mobile receiver. To reveal the mobility mechanism of SMIPT, we present a geometric model of the mobile transmission channel and an analytical model of mobile energy and information transfer. Refraction is ignored in the geometric model and Fresnel/paraxial approximations are adopted in the above analytical model. Numerical evaluation illustrates that the exemplary SMIPT system can deliver 5W charging power and enable 9.5bps/Hz spectral efficiency with the moving range of 40-degree field of view (FOV) over 3m distance. Thus, SMIPT exhibits a viable solution of simultaneous narrow beam transmission and mobile receiver positioning for high-power and high-rate SLIPT.

Original languageEnglish (US)
JournalIEEE Transactions on Signal Processing
DOIs
StateAccepted/In press - 2021

Bibliographical note

Publisher Copyright:
IEEE

Keywords

  • Analytical models
  • Faces
  • Laser beams
  • Mobility and self-alignment
  • Optical receivers
  • Optical resonators
  • Optical transmitters
  • Reflectivity
  • Retro-reflective resonator
  • Simultaneous mobile information and power transfer
  • Wireless power transfer

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