Real-time simultaneous energy and information transfer

Anshoo Tandon, Mehul Motani, Lav R Varshney

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

Abstract

Consider an energy-harvesting receiver that uses the same received signal both for decoding information and for harvesting energy to power its circuitry. When the receiver has limited battery size, a signal with bursty energy content may cause power outage since the battery will drain during intervals with low signal energy. The energy content in the signal may be regularized by requiring that sufficient energy is carried in every subblock duration. In this paper, we study constant subblock-composition codes (CSCCs) where all subblocks in every codeword have the same composition, and this composition is chosen such that the real-time energy requirement at the receiver is met. For a given energy storage capacity at the receiver, we give a necessary and sufficient condition on the subblock length for avoiding outage. We show that CSCC capacity on a discrete memoryless channel can be efficiently computed by exploiting certain symmetry conditions, and compare it with the capacity of constant composition codes. We provide numerical examples highlighting the tradeoff between delivery of sufficient energy to the receiver and achieving high information transfer rates.

Original languageEnglish (US)
Title of host publicationProceedings - 2015 IEEE International Symposium on Information Theory, ISIT 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1124-1128
Number of pages5
ISBN (Electronic)9781467377041
DOIs
StatePublished - Sep 28 2015
EventIEEE International Symposium on Information Theory, ISIT 2015 - Hong Kong, Hong Kong
Duration: Jun 14 2015Jun 19 2015

Publication series

NameIEEE International Symposium on Information Theory - Proceedings
Volume2015-June
ISSN (Print)2157-8095

Other

OtherIEEE International Symposium on Information Theory, ISIT 2015
CountryHong Kong
CityHong Kong
Period6/14/156/19/15

ASJC Scopus subject areas

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

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  • Cite this

    Tandon, A., Motani, M., & Varshney, L. R. (2015). Real-time simultaneous energy and information transfer. In Proceedings - 2015 IEEE International Symposium on Information Theory, ISIT 2015 (pp. 1124-1128). [7282630] (IEEE International Symposium on Information Theory - Proceedings; Vol. 2015-June). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISIT.2015.7282630