Analysis of data transmission in underwater optical wireless communication in vertical channels

Manimegalai, C. T.; Thakur, Himanshu; Bhatta, Hemanga; Iliyas, Afaan

doi:10.1007/s12596-022-00880-6

Cited by 5 publications

(2 citation statements)

References 16 publications

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“…It is evident from figure 6(a) that the system operated on C-band (1530-1565 nm) at a bit rate that as the value of Q increases, the value of BER decreases, consequently escalating the system's performance. However, a mathematical approximation of BER attained using Q-factor can be made equal to 0.5erfc(Q/ √ 2) [35,36]. Apart from the Q-factor and BER, the performance of the system is analyzed in terms of eye height ,which reflects the quality of the signal being noted as 0.00069 a.u.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

Performance enhancement of optical communication system with cascaded FBGs of varying lengths

Naga Bhaskar,

Pal,

Pattnaik

2023

J. Opt.

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In this paper, an optical communication system constructed with cascaded fiber Bragg gratings or FBGs of varying lengths capable of operating in the C-band is presented. Here, initially, a passive optical device formed with four cascaded FBGs of varying lengths is proposed and analysed. Subsequently, the proposed device is kept in the optical communication system to reduce the spectral widthof the source, thereby enhancing the system's performance. Analytical formulation based on the transfer matrix method (TMM) of an optical device is incorporated. The effect of such a device on the system performance at various operating distances is discussed. Further, the system performance is studied with the apodized FBGs in the passive optical device. At the end, we investigated the effect of incorporating the cascaded FBG structure in the system utilizing four-level pulse amplitude modulation or PAM-4 modulation . As per the simulation results, the proposed device has given a maximum reflectivity of 98.39% and a minimum FWHM of 0.175 nm for uniform FBGs. But with the apodized FBGs, an FWHM of 0.07 nm with a reflectivity of 59.81% has been achieved. Simulation results reveal that the system formed with the proposed device has given better performance up to a distance of 105 km compared to the absence of the device. At the maximum operating distance of the system with apodized FBGs, the Q-factor and bit error rate (BER) are recorded as 6.712 and 9.5321×10-12, respectively. Apart from the Q-factor and BER estimation, eye height is also used to estimate the system performance at various operating distances.

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Section: Simulation Results and Discussionmentioning

confidence: 99%

Performance enhancement of optical communication system with cascaded FBGs of varying lengths

Naga Bhaskar,

Pal,

Pattnaik

2023

J. Opt.

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“…When the sensor is located at the edge of the network, the probability of signal distortion is relatively high. Since the application and development of network technology in industrial production is transitional [3], the corresponding data transmission standard should be replaceable [4], which is also the premise of performance optimization. In order to solve these problems, a wireless network optimization design scheme of seismic monitoring system is proposed in this paper.…”

Section: Introductionmentioning

confidence: 99%

Optimization of communication performance in wireless seismic monitoring system

Fan,

Han,

2023

J. vibroeng.

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In order to improve the communication performance between different equipment in the seismic detection system, a wireless network system with MIMO (Multiple Input and Multiple Output) characteristics was designed and applied in the paper. On the basis of 5G communication, a new data conversion and transmission model was built, which can improve the rate of signal transmission and reduce the bit error rate and power consumption. For the purpose of power optimization, the overall framework of the network system was improved, of which power characteristics and performance were verified. The conjugate beam was normalized, and the cumulative distribution function under different downlink rates was obtained based on the maximum minimum power control scheme. In order to verify the energy-saving effect of the design, the ADC (Analog-to-Digital Conversion) power model is introduced. Through simulation analysis, the change rules of spectrum efficiency and energy efficiency under different network nodes were obtained. The results show that the normalized conjugate beam can be less affected by the transmission nodes, and the power control is more reliable under the same conditions. The research and application of this subject can significantly improve the wireless communication performance of the seismic monitoring system, reduce the power consumption of network equipment, improve the data transmission efficiency, and provide strong technical support for seismic prediction and data analysis. Through the test of artificial earthquake, it is verified that the communication scheme designed in this paper has higher transmission efficiency and lower bit error rate, and is very suitable for the long-distance transmission of seismic signals.

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A review of underwater docking and charging technology for autonomous vehicles

Liu,

Yu,

et al. 2024

Ocean Engineering

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Analysis of data transmission in underwater optical wireless communication in vertical channels

Cited by 5 publications

References 16 publications

Performance enhancement of optical communication system with cascaded FBGs of varying lengths

Performance enhancement of optical communication system with cascaded FBGs of varying lengths

Optimization of communication performance in wireless seismic monitoring system

A review of underwater docking and charging technology for autonomous vehicles

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