Evaluation of Communication Link Performance and Charging Speed in Self-Powered Internet of Underwater Things Devices

Majlesein, Behnaz; Guerra, Víctor; Rabadán, José; Rufo, Julio; Pérez‐Jiménez, Rafael

doi:10.1109/access.2022.3207760

Cited by 5 publications

(1 citation statement)

References 22 publications

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“…Specifically, in the context of UOWC, in Reference 8, three SLIPT methods (1) time switching (TS), (2) power‐splitting (PS), and (3) a combination of TS‐PS were considered for a point‐to‐point UOWC and performance was analyzed in terms of ergodic capacity and bit error rate (BER). In Reference 9, authors experimentally demonstrated solar cell based UOWC‐SLIPT setup with on‐off keying and variable DC bias.…”

Section: Introductionmentioning

confidence: 99%

Energy‐efficient UOWC‐RF systems with SLIPT

Agarwal,

Singh

2023

Trans Emerging Tel Tech

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This letter investigates a two‐hop underwater optical wireless communication‐radio frequency setup consisting of an autonomous underwater vehicle (AUV), a communication buoy, and an onshore data center (ODC). The information transmission between AUV and ODC occurs in two phases. In the first phase, the AUV communicates to the buoy over the optical wireless link. The buoy harvests the energy by using simultaneous lightwave information and power transfer and also decodes the information. In the subsequent phase, the buoy transmits the decoded information to the ODC over an RF link by utilizing the harvested energy at the first phase. A joint optimization problem is proposed to minimize the total optical energy consumption at the AUV by optimally selecting the DC‐bias and the time allocated to the first and second phases subject to the minimum required end‐to‐end rate. Due to the non‐convexity of the original problem, an alternative approach is used to make it convex. For certain system parameters, our results show a significant energy savings of J at the required rate of 2 bits per channel use.

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Section: Introductionmentioning

confidence: 99%

Energy‐efficient UOWC‐RF systems with SLIPT

Agarwal,

Singh

2023

Trans Emerging Tel Tech

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Array strategy enhances low-frequency radiation intensity and low-frequency magnetic field sensing SNR of magnetoelectric antenna

Wang,

Zi,

Song

et al. 2024

AIP Advances

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The magnetoelectric (ME) coupling effect is a more effective approach for reducing antenna size. Nevertheless, at low frequencies, a single ME structure generates a weak signal strength and a low signal-to-noise ratio (SNR). This study utilized an array strategy to improve the radiation and induced electromagnetic field performance of ME antennas. In this study, the array ME coupling structure, composed of Metglas and Pb (Zr1−xTix) O3 (PZT) bilayers, was operated through ME coupling resonance modes. The relationship between the sensitivity and SNR of the serially connected ME antenna array and the number of series connections was determined. On the transmission side, the impact of the multi-source power supply modes on the radiation intensity and directivity of the ME antennas was analyzed. The sensitivity, SNR, magnetic detection limit, directivity, and radiation range of the single ME and array ME antennas were tested for the key parameters. Finally, it was demonstrated that at a frequency of 31.75 kHz, the array strategy achieved a low-frequency signal transmission distance of up to 48.1 m, which is 1.7 times that of a single ME antenna. This array strategy significantly enhances the radiation intensity and magnetic field SNR of ME antennas in the low-frequency range, demonstrating its application prospects in the field of low-frequency communication.

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