Selection Relay-Based RF-VLC Underwater Communication System

Ali, Mohammad Furqan; Perera, Tharindu D. Ponnimbaduge; Sergeevich, Vladislav S.; Irfan, Sheikh Arbid; Viktorovna, Unzhakova Ekaterina; Weijia, Zhang; Camponogara, Ândrei; Jayakody, Dushantha Nalin K.

doi:10.1007/978-981-16-0289-4_14

Cited by 6 publications

(2 citation statements)

References 22 publications

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“…[4]. Compared to underwater optical wireless communication, UWA communication features lower data rates, narrower bandwidth, higher propagation delay, and weaker security [5]. However, the absorption and scattering of optical signals in water severely constrain communication distances.…”

Section: Introductionmentioning

confidence: 99%

Image Super Resolution-Based Channel Estimation for Orthogonal Chirp Division Multiplexing on Shallow Water Underwater Acoustic Communications

Liu,

He,

et al. 2024

Sensors

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Orthogonal chirp division multiplexing (OCDM) offers a promising modulation technology for shallow water underwater acoustic (UWA) communication systems due to multipath fading resistance and Doppler resistance. To handle the various channel distortions and interferences, obtaining accurate channel state information is vital for robust and efficient shallow water UWA communication. In recent years, deep learning has attracted widespread attention in the communication field, providing a new way to improve the performance of physical layer communication systems. In this paper, the pilot-based channel estimation is transformed into a matrix completion problem, which is mathematically equivalent to the image super-resolution problem arising in the field of image processing. Simulation results show that the deep learning-based method can improve the channel distortion, outperforming the equalization performed by traditional estimator, the performance of Bit Error Rate is improved by 2.5 dB compared to the MMSE method in OCDM system. At the 7.5 to 20 dB region, it achieves better bit error rate performance than OFDM systems, and the bit error rate is reduced by approximately 53% compared to OFDM when the SNR value is 20, which is very useful in shallow water UWA channels with multipath extension and severe time-varying characteristics.

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Section: Introductionmentioning

confidence: 99%

Image Super Resolution-Based Channel Estimation for Orthogonal Chirp Division Multiplexing on Shallow Water Underwater Acoustic Communications

Liu,

He,

et al. 2024

Sensors

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“…[1]. The water physio-chemical properties are considered the main cause of underwater optical turbulence as signal fading in [2,3]. The strong turbulence zone underwater could be found in the form of layers where the two different water mediums mishmash.…”

Section: Introductionmentioning

confidence: 99%

O2O: An Underwater VLC Approach in Baltic and North Sea

2022

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Recently, underwater visible light communication (UVLC) has become a potential wireless carrier candidate in the acrimonious mingled ocean straits. The combined strait of the North and Baltic ocean is a harsh and strongly turbid aqueous zone that contributes signal fading at a large scale. Due to this, we are proposing a UVLC system within the Baltic–North ocean mingled water under strong turbulence channel conditions. In this study, the Gamma–Gamma distribution is used to model UVLC link under an OOK modulation scheme. Subsequently, the reason for the unavailability of the latest North–Baltic oceanographic data within this bayou, we investigate the BER and outage probability performance of the proposed system within the mingled strait for the whole year during 1996s. Throughout, this work, the performance is obtained individually in both of the oceans and then compared with the heterogeneous state. It is noteworthy that the analytical work has been considered of the following distinct physio-chemical properties and the data provided for each ocean. Additionally, the simulation results are verified the analytical work of the proposed system model.

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