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Interactive Joint Transfer of Energy and Information

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Authors:
  • Popovski, Petar ;
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    Orcid logo0000-0001-6195-4797
    Department of Electronic Systems, The Technical Faculty of IT and Design, Aalborg University
  • Fouladgar, A. M. ;
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    New Jersey Institute of Technology
  • Simeone, Osvaldo
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    New Jersey Institute of Technology
DOI:
10.1109/TCOMM.2013.031213.120723
Abstract:
In some communication networks, such as passive RFID systems, the energy used to transfer information between a sender and a recipient can be reused for successive communication tasks. In fact, from known results in physics, any system that exchanges information via the transfer of given physical resources, such as radio waves, particles and qubits, can conceivably reuse, at least part, of the received resources. This paper aims at illustrating some of the new challenges that arise in the design of communication networks in which the signals exchanged by the nodes carry both information and energy. To this end, a baseline two-way communication system is considered in which two nodes communicate in an interactive fashion. In the system, a node can either send an “on” symbol (or “1”), which costs one unit of energy, or an “off” signal (or “0”), which does not require any energy expenditure. Upon reception of a “1” signal, the recipient node “harvests”, with some probability, the energy contained in the signal and stores it for future communication tasks. Inner and outer bounds on the achievable rates are derived. Numerical results demonstrate the effectiveness of the proposed strategies and illustrate some key design insights. Index Terms— Two-way channel, interactive communication, energy transfer, energy harvesting.
Type:
Journal article
Language:
English
Published in:
I E E E Transactions on Communications, 2013, Vol 61, Issue 5, p. 2086-2097
Main Research Area:
Science/technology
Publication Status:
Published
Review type:
Peer Review
Submission year:
2013
Scientific Level:
Scientific
ID:
241987011

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