Z-OFDM: A New High-Performance Solution for Underwater Acoustic Communication

Su, Haitao; Chen, Jiaxuan; Li, Angdi; Hu, Hongzhi; Xu, Cuifeng

doi:10.3390/electronics13173543

Open AccessArticle

Z-OFDM: A New High-Performance Solution for Underwater Acoustic Communication

by

Haitao Su

^1,2,

Jiaxuan Chen

¹,

Angdi Li

³,

Hongzhi Hu

^1,2 and

Cuifeng Xu

^1,2,*

¹

School of Electronic Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, China

²

Guangxi Key Laboratory of Automatic Detection Technology and Instrumentation, Guilin 541004, China

³

School of Integrated Circuits, Huazhong University of Science and Technology, Wuhan 430074, China

^*

Author to whom correspondence should be addressed.

Electronics 2024, 13(17), 3543; https://doi.org/10.3390/electronics13173543

Submission received: 7 July 2024 / Revised: 3 September 2024 / Accepted: 4 September 2024 / Published: 6 September 2024

(This article belongs to the Special Issue New Advances in Underwater Communication Systems)

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Abstract

This paper presents Z-OFDM, a high-performance solution for underwater acoustic communication. Traditional underwater orthogonal frequency division multiplexing (OFDM) systems suffer from spectrum leakage and distortion due to the narrowband nature of underwater acoustic signals and the picket fence effect of the fast Fourier transform (FFT). Z-OFDM addresses these issues by integrating zoom-fast Fourier transform (ZoomFFT) with OFDM and redesigning the modulator and demodulator to replace the conventional FFT. This integration enhances spectral resolution, resulting in higher channel capacity, improved Signal to Interference plus Noise Ratio (SINR), and reduced Bit Error Rate (BER). Computer simulations using underwater acoustic channels from Fuxian Lake and Wuyuan Bay demonstrate that the Z-OFDM system achieves a 6 dB gain compared to conventional OFDM systems at a BER of

10^{- 3}

. These results demonstrate the effectiveness of Z-OFDM in overcoming the limitations of traditional FFT-based OFDM systems in underwater environments.

Keywords: OFDM; ZoomFFT; underwater acoustic communication

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MDPI and ACS Style

Su, H.; Chen, J.; Li, A.; Hu, H.; Xu, C. Z-OFDM: A New High-Performance Solution for Underwater Acoustic Communication. Electronics 2024, 13, 3543. https://doi.org/10.3390/electronics13173543

AMA Style

Su H, Chen J, Li A, Hu H, Xu C. Z-OFDM: A New High-Performance Solution for Underwater Acoustic Communication. Electronics. 2024; 13(17):3543. https://doi.org/10.3390/electronics13173543

Chicago/Turabian Style

Su, Haitao, Jiaxuan Chen, Angdi Li, Hongzhi Hu, and Cuifeng Xu. 2024. "Z-OFDM: A New High-Performance Solution for Underwater Acoustic Communication" Electronics 13, no. 17: 3543. https://doi.org/10.3390/electronics13173543

APA Style

Su, H., Chen, J., Li, A., Hu, H., & Xu, C. (2024). Z-OFDM: A New High-Performance Solution for Underwater Acoustic Communication. Electronics, 13(17), 3543. https://doi.org/10.3390/electronics13173543

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Z-OFDM: A New High-Performance Solution for Underwater Acoustic Communication

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