Multi-carrier backscatter communication system for concurrent wireless and batteryless sensing

Nitish Rajoria, Hiromu Kamei, Jin Mitsugi, Yuusuke Kawakita, Haruhisa Ichikawa

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

Abstract

Wireless and batteryless sensing has recently attracted significant attention of researchers in IoT and WSN applications. It turns out to be more challenging when simultaneous data acquisition from multiple sensors is required. This paper introduces a non-orthogonal multiple access technique MSMA, using extremely simple wireless and batteryless sensor tags and a reader to support concurrent streaming from multiple sensors. By simultaneously handling non-orthogonal subcarriers, produced either by multiple or single sensor tag, it can realize concurrent sensor data streaming, which can be used in health monitoring of machinery and civil structures. The paper explains the two primary challenges in MSMA, the optimal assignment of subcarrier frequencies and the unavoidable harmonics from one subcarrier to others. Since the mutual interference among subcarriers is unevenly distributed over the available frequency band, random allocation of subcarrier frequencies may result in degraded system performance. Results show that the interference can be canceled out with the signal processing technique and the system communication capacity can be increased significantly with a proposed heuristic approach compared to random allocation of subcarrier frequencies to the sensor tags.

Original languageEnglish
Title of host publicationProceedings of the 2017 International Conference on Wireless Communications, Signal Processing and Networking, WiSPNET 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1078-1082
Number of pages5
ISBN (Electronic)9781509044412
DOIs
Publication statusPublished - 2018 Feb 21
Event2nd IEEE International Conference on Wireless Communications, Signal Processing and Networking, WiSPNET 2017 - Chennai, India
Duration: 2017 Mar 222017 Mar 24

Publication series

NameProceedings of the 2017 International Conference on Wireless Communications, Signal Processing and Networking, WiSPNET 2017
Volume2018-January

Other

Other2nd IEEE International Conference on Wireless Communications, Signal Processing and Networking, WiSPNET 2017
CountryIndia
CityChennai
Period17/3/2217/3/24

ASJC Scopus subject areas

  • Computer Science Applications
  • Media Technology
  • Computer Networks and Communications
  • Signal Processing
  • Health Informatics

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  • Cite this

    Rajoria, N., Kamei, H., Mitsugi, J., Kawakita, Y., & Ichikawa, H. (2018). Multi-carrier backscatter communication system for concurrent wireless and batteryless sensing. In Proceedings of the 2017 International Conference on Wireless Communications, Signal Processing and Networking, WiSPNET 2017 (pp. 1078-1082). (Proceedings of the 2017 International Conference on Wireless Communications, Signal Processing and Networking, WiSPNET 2017; Vol. 2018-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/WiSPNET.2017.8299928