Optimized Receivers for Underwater Visible Light Communication

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This is an unedited manuscript accepted for publication and provided as an Article in Press for early access at the author’s request. The article will undergo copyediting, typesetting, and galley proof review before final publication. Please be aware that errors may be identified during production that could affect the content. All legal disclaimers of the journal apply.

Year : 2026 | Volume : 16 | 01 | Page :
    By

    Dr. B. Vijayalakshmi,

  • G. Hema Likhita,

  • G. Meghana,

  • G.V.V.Ramana Sri,

  • B.Jeevana Jyothi,

  1. Associate Professor, Electronics And Communication Engineering, Gayatri Vidya Parishad College of Engineering for Women Visakhapatnam, Andhra Pradesh, India
  2. Student, Electronics And Communication Engineering, Gayatri Vidya Parishad College of Engineering for Women Visakhapatnam, Andhra Pradesh, India
  3. Student, Electronics And Communication Engineering, Gayatri Vidya Parishad College of Engineering for Women Visakhapatnam, Andhra Pradesh, India
  4. Student, Electronics And Communication Engineering, Gayatri Vidya Parishad College of Engineering for Women Visakhapatnam, Andhra Pradesh, India
  5. Student, Electronics And Communication Engineering, Gayatri Vidya Parishad College of Engineering for Women Visakhapatnam, Andhra Pradesh, India

Abstract

For uses like ocean exploration, environmental monitoring, and underwater data transfer, wireless communication under water is crucial. Conventional acoustic and radio frequency communication methods suffer from low bandwidth, high latency, and severe signal attenuation in underwater environments. With its high data rate and low propagation delay, Visible Light Communication (VLC) provides a promising alternative. In this work, an underwater VLC system is implemented using Light Emitting Diodes (LEDs) with intensity modulation and On-Off Keying (OOK). The underwater optical channel is modeled considering absorption, scattering, and turbulence effects influencing signal propagation. A Single Photon Avalanche Diode (SPAD) receiver is used for photon-counting detection under low- light conditions. To enhance detection performance, advanced techniques such as Threshold Detection, Multiple Symbol Detection (MSD), and Generalized Likelihood Block Detection (GLBD) are implemented. Furthermore, block coding and fast search algorithms are applied to reduce Bit Error Rate (BER) and computational complexity. Simulation results demonstrate improved BER performance under different Signal-to-Noise Ratio (SNR), optical power, and turbulence conditions, highlighting the effectiveness of the proposed system for reliable underwater communication. The system undergoes evaluation using different water types and attenuation coefficients to simulate actual ocean conditions. Furthermore, the suggested method shows resilience to background noise and alignment problems, thereby guaranteeing stable communication links.

Keywords: Underwater Visible Light Communication, Optical Wireless Communication, SPAD Receiver, MSD, GLBD, OOK Modulation, BER Performance.

How to cite this article:
Dr. B. Vijayalakshmi, G. Hema Likhita, G. Meghana, G.V.V.Ramana Sri, B.Jeevana Jyothi. Optimized Receivers for Underwater Visible Light Communication. Trends in Opto-electro & Optical Communication. 2026; 16(01):-.
How to cite this URL:
Dr. B. Vijayalakshmi, G. Hema Likhita, G. Meghana, G.V.V.Ramana Sri, B.Jeevana Jyothi. Optimized Receivers for Underwater Visible Light Communication. Trends in Opto-electro & Optical Communication. 2026; 16(01):-. Available from: https://journals.stmjournals.com/toeoc/article=2026/view=240944


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Ahead of Print Subscription Review Article
Volume 16
01
Received 15/04/2026
Accepted 22/04/2026
Published 25/04/2026
Publication Time 10 Days
60

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