Resonant Beam Communications with Echo Interference Elimination

Mingliang Xiong, Qingwen Liu*, Gang Wang, Georgios B. Giannakis, Sihai Zhang, Jinkang Zhu, Chuan Huang

*Corresponding author for this work

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Abstract

Resonant beam communications (RBCom) is capable of providing wide bandwidth when using light as the carrier. Besides, the RBCom system possesses the characteristics of mobility, high signal-to-noise ratio (SNR), and multiplexing. Nevertheless, the channel of the RBCom system is distinct from other light communication technologies due to the echo interference issue. In this article, we reveal the mechanism of the echo interference and propose the method to eliminate the interference. Moreover, we present an exemplary design based on frequency shifting and optical filtering, along with its mathematic model and performance analysis. The numerical evaluation shows that the channel capacity is greater than 15 b/s/Hz.

Original languageEnglish
Article number9184070
Pages (from-to)2875-2885
Number of pages11
JournalIEEE Internet of Things Journal
Volume8
Issue number4
DOIs
Publication statusPublished - 15 Feb 2021

Keywords

  • Frequency-shift filtering
  • Internet of Things
  • laser communications
  • optical mobile communications (OMC)
  • resonant beam system (RBS)

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Xiong, M., Liu, Q., Wang, G., Giannakis, G. B., Zhang, S., Zhu, J., & Huang, C. (2021). Resonant Beam Communications with Echo Interference Elimination. IEEE Internet of Things Journal, 8(4), 2875-2885. Article 9184070. https://doi.org/10.1109/JIOT.2020.3020908