Performance Enhancement of SWIPT by Utilizing the Distance Dependent Bandwidth of Underwater Channel for Cooperative NOMA based UASNs

Authors

Keywords:

Average achievable rate, Energy efficiency, Nonorthogonal multiple access, Outage probability, Simultaneous wireless information and power transfer, Underwater acoustic sensor networks

Abstract

Underwater acoustic sensor networks (UASNs) support a variety of oceanic applications but suffer from limited communication bandwidth, reliability, and energy efficiency. Cooperative non-orthogonal multiple access (CNOMA) with simultaneous wireless information and power transfer (SWIPT) schemes are proposed for UASNs to meet these constraints. The unique characteristic of underwater acoustic channels compared to terrestrial wireless channels is the distance-dependent bandwidth, which provides additional bandwidth to the near user compared to the far user in NOMA-based UASNs. In this research work, we propose to enhance the performance of power splitting (PS) and time switching (TS) SWIPT schemes by utilizing this additional bandwidth at the near user in NOMA-based UASNs. We consider a CNOMA-based UASN and derive closed-form expressions for average achievable rates, energy efficiency, and outage probability with improved PS-SWIPT and TS-SWIPT schemes. From the analytical results, it is evident that the average achievable rate, energy efficiency and outage probability performances are significantly improved with the proposed methods. The analytical results are corroborated with extensive simulation studies.

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Author Biographies

Harigovindan V P, National Institute of Technology Puducherry

Harigovindan V P (Senior Member, IEEE) received the Bachelor of Technology degree in Electronics and Communication Engineering from University of Calicut, the Master of Technology degree in Digital Electronics and Communication Systems from Visvesvaraya Technological University (with first rank), and the Ph.D. degree from the National Institute of Technology Calicut, in 2013. He is currently working as Associate Professor with the Department of Electronics and Communication Engineering, and Dean (Planning and Development) at National Institute of Technology Puducherry (under the Ministry of Education, Government of India). He has more than 75 international publications to his credit. He served as the Principal Investigator for three funded projects, each from the Department of Science and Technology, Government of India, Science and Engineering Research Board and Microsoft AI for Earth. Presently he is serving as the PI of a project funded by DST - Science for Equity, Empowerment and Development, Govt. of India. He has 5 patents granted to his credit. His research interests include wireless networks, artificial intelligence, Internet of things and wireless communications.

Deepa R, National Institute of Technology Puducherry

Deepa R (Graduate Student Member, IEEE) received the B.Tech. degree in Electronics and Communication Engineering from Pondicherry university and the M.E. Degree in VLSI Design from Anna university, Chennai, India, in 2012 and 2014, respectively. She is currently working in the Ph.D. degree in Electronics and Communication Department, National Institute of Technology Puducherry, India. Her current research focuses on nonorthogonal multiple access-based underwater wireless sensor networks.

Goutham Veerapu, Vellore Institute of Technology

Veerapu Goutham is presently serving as an Assistant Professor Senior Grade 1 in the Department of Communication Engineering at the School of Electronics Engineering, Vellore Institute of Technology, located in Vellore, India. He has received his undergraduate degree in Electronics and Communication Engineering from Sri Krishnadevaraya University, Anantapur and a postgraduate degree in Digital Communications from National Institute of Technology Bhopal, India. In 2022, he received his Ph.D. degree from the National Institute of Technology Puducherry. He has more than Ten International publications and one granted patent to his credit. He is the reviewer for many SCI/SCOPUS indexed international journals namely, IEEE Transactions on Vehicular Technology, IEEE Communication Letters, IEEE Internet of Things journal and more. His research interests are in the areas of Non-Orthogonal Multiple Access, 5G and Beyond Networks, Intelligent Reflecting Surfaces, Wireless Communications, and Underwater Acoustic Sensor Networks.

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Published

2025-10-01

How to Cite

V P, H., R, D. ., & Veerapu, G. (2025). Performance Enhancement of SWIPT by Utilizing the Distance Dependent Bandwidth of Underwater Channel for Cooperative NOMA based UASNs. IEEE Latin America Transactions, 23(11), 980–988. Retrieved from https://latamt.ieeer9.org/index.php/transactions/article/view/9685

Issue

Vol. 23 No. 11 (2025): Ordinary Issue

Section

Computing