Wireless information and power transfer over an AWGN channel: Nonlinearity and asymmetric Gaussian signaling

Morteza Varasteh, Borzoo Rassouli, Bruno Clercks

Research output: Chapter in Book/Report/Conference proceedingConference contribution

14 Citations (Scopus)

Abstract

Simultaneous transmission of information and power over a point-to-point complex Additive White Gaussian Noise (AWGN) channel is studied. In contrast with the literature that relies on an inaccurate linear model of the energy harvester, an experimentally-validated nonlinear model is considered. A general form of the delivered Direct Current (DC) power in terms of system baseband parameters is derived, which demonstrates the dependency of the delivered DC power on higher order statistics of the channel input distribution. The optimization problem of maximizing Rate-Power (R-P) region is studied. Assuming that the Channel gain is known at both the receiver and the transmitter, and constraining to independent and identically distributed (i.i.d.) channel inputs determined only by their first and second moment statistics, an inner bound for the general problem is obtained. Notably, as a consequence of the harvester nonlinearity, the studied inner bound exhibits a tradeoff between the delivered power and the rate of received information. It is shown that the tradeoff-characterizing input distribution is with mean zero and with asymmetric power allocations to the real and imaginary dimensions.

Original languageEnglish
Title of host publication2017 IEEE Information Theory Workshop, ITW 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages181-183
Number of pages3
Volume2018-January
ISBN (Electronic)9781509030972
DOIs
Publication statusPublished - 2018 Jan 31
Externally publishedYes
Event2017 IEEE Information Theory Workshop, ITW 2017 - Kaohsiung, Taiwan, Province of China
Duration: 2017 Nov 62017 Nov 10

Other

Other2017 IEEE Information Theory Workshop, ITW 2017
CountryTaiwan, Province of China
CityKaohsiung
Period17/11/617/11/10

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Information Systems
  • Modelling and Simulation
  • Applied Mathematics

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  • Cite this

    Varasteh, M., Rassouli, B., & Clercks, B. (2018). Wireless information and power transfer over an AWGN channel: Nonlinearity and asymmetric Gaussian signaling. In 2017 IEEE Information Theory Workshop, ITW 2017 (Vol. 2018-January, pp. 181-183). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ITW.2017.8278010