Nonlinear code design for joint energy and information transfer

Date
2015-06
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Source Title
IEEE International Conference on Communications, 2015
Print ISSN
1550-3607
Electronic ISSN
Publisher
IEEE
Volume
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Pages
4247 - 4252
Language
English
Type
Conference Paper
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Abstract

Harvesting energy from radio frequency signals along with transmitting data through them is appealing for different wireless communication scenarios such as RFID systems and implantable devices. In this paper, we propose a technique to design nonlinear codes for use in such systems taking into account both energy transmission and error rate requirements. Specifically, we propose using concatenation of a nonlinear trellis code with an outer low density parity check code. Via examples, we observe that our designed codes operate at SNRs 2.4dB away from information theoretic limits, and they outperform reference schemes of concatenating LDPC codes with nonlinear memoryless mappers and using classical linear block codes in a time switching mode. We note that it is possible to close the gap to the information theoretic limits further by more sophisticated receiver designs and more complex encoders. © 2015 IEEE.

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Keywords
Joint energy and information transfer, Low density parity check codes, Nonlinear codes, RF energy harvesting
Citation
Published Version (Please cite this version)