Signal Transmission in Underwater Using Passive Time Reversal for Single and Multiuser

Authors

  • P. Sathya Narayanan Department of Electrical and Electronics Engineering, Saveetha Engineering College, Chennai, 602105 India
  • J. Shanmuga Kani Department of Electrical and Electronics Engineering, Saveetha Engineering College, Chennai, 602105 India
  • P. Kabilan Department of Electrical and Electronics Engineering, Saveetha Engineering College, Chennai, 602105 India

DOI:

https://doi.org/10.37591/ctsp.v6i2.4935

Abstract

This paper describes passive time reversal communications, which enables multiple users to send information simultaneously to the time reversal array. Experimental results at 3.5 kHz with a 1 kHz bandwidth demonstrate that as many as six users can transmit information over a 4 km range in a 120 m deep water using quaternary phase-shift keying (QPSK) modulation, achieving an aggregate data rate of 6 kb/s. Moreover, the same data rate has been achieved at 20 km range by three users using 16-quadrature amplitude modulation (16-QAM).

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Published

2021-01-11

Issue

Vol. 6 No. 2 (2016)

Section

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