Wireless Information and Power Transfer: Rate-Energy Tradeoff for Equi-Probable Arbitrary-Shaped Discrete Inputs
- Authors
- Kim I.-M.[Kim I.-M.]; Kim D.I.[Kim D.I.]
- Issue Date
- Jun-2016
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Energy harvesting; discrete input; power constraint; rate-energy (R-E) tradeoff; SWIPT
- Citation
- IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, v.15, no.6, pp.4393 - 4407
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
- Volume
- 15
- Number
- 6
- Start Page
- 4393
- End Page
- 4407
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/36340
- DOI
- 10.1109/TWC.2016.2540638
- ISSN
- 1536-1276
- Abstract
- In this paper, the fundamental rate-energy (R-E) tradeoffs are studied for simultaneous wireless information and power transfer (SWIPT). Unlike the existing results obtained using Gaussian input given an average power constraint, we focus on the equi-probable arbitrary shaped discrete inputs considering a peak power constraint as well as an average power constraint. For these power constraints, the transmit power strategies are presented and the R-E regions are derived. The optimality of different SWIPT schemes is first studied in terms of the R-E tradeoff for the case of negligible circuit power consumption in the information decoder. The results are extended to the case of non-negligible circuit power consumption in the information decoder. The asymptotic R-E regions are also derived, which give us useful insights into the fundamental R-E tradeoffs. Finally, the R-E regions of Gaussian input and discrete inputs are compared under an average power constraint.
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Collections - Information and Communication Engineering > School of Electronic and Electrical Engineering > 1. Journal Articles
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