Effect of scattering phase function on underwater visible light communication channel models

Miramirkhani, Farshad; Karbalayghareh, Mehdi; Uysal, Murat

doi:10.1016/j.phycom.2021.101410

Cited by 8 publications

(3 citation statements)

References 28 publications

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“…The authors of [93] employed a double Gamma function to approximate the impulse response of underwater optical links, facilitating simultaneous optimization of the encoder and decoder by learning channel characteristics. The authors of [94] highlighted that the precision of non-sequential ray tracing is contingent upon the optical properties of water and the accuracy of the scattering phase function (SPF) modeling in simulations. The authors of [95] proposed a system employing a hybrid decode-amplifyforward strategy across UWOC channels.…”

Section: Underwater Wireless Optical Communication Researchmentioning

confidence: 99%

Breakthrough Underwater Physical Environment Limitations on Optical Information Representations: An Overview and Suggestions

Li,

Zhang,

Zhang

et al. 2024

JMSE

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Underwater optics have seen a notable surge of interest in recent years, emerging as a critical medium for conveying information crucial to underwater resource exploration, autonomous underwater vehicle navigation, etc. The intricate dynamics of underwater optical transmission, influenced by factors such as the absorption by the water and scattering by multiple particles, present considerable challenges. One of the most critical issues is that the optical information representation methods fail to take into account the impact of the underwater physical environment. We conducted a comprehensive review and analysis of recent advancements in underwater optical transmission laws and models. We summarized and analyzed relevant research on the effects of underwater particles and turbulence on light and analyzed the polarization effects in various environments. Then, the roles of various types of underwater optical propagation models were analyzed. Although optical models in complex environments are still mostly based on Monte Carlo methods, many underwater optical propagation mechanisms have been revealed and can promote the impacts of optical information expression. We delved into the cutting-edge research findings across three key domains: the enhancement of underwater optical image quality, the 3D reconstruction from monocular images, and the underwater wireless optical communication, examining the pivotal role played by light transmission laws and models in these areas. Drawing upon our extensive experience in underwater optics, including underwater optical sensor development and experiments, we identified and underscored future directions in this field. We advocate for the necessity of further advancements in the comprehension of underwater optical laws and physical models, emphasizing the importance of their expanded application in underwater optical information representations. Deeper exploration into these areas is not only warranted but essential for pushing the boundaries of current underwater optical technologies and unlocking new potential for their application in underwater optical sensor developments, underwater exploration, environmental monitoring, and beyond.

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Section: Underwater Wireless Optical Communication Researchmentioning

confidence: 99%

Breakthrough Underwater Physical Environment Limitations on Optical Information Representations: An Overview and Suggestions

Li,

Zhang,

Zhang

et al. 2024

JMSE

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“…Since the indoor channel is relatively controllable compared to the outdoor channel, the transmission channel of the VLC system is more stable. The visible light signal emitted by the transmitter of the VLC system reaches the PD receiver after being transmitted through the channel [6]. The PD photodetector will convert the received optical signal to obtain an electrical signal, and then use the amplifier module to demodulate and decode the signal to recover the original transmitted signal [7].…”

Section: Basic Architecture Of Vlc Systemmentioning

confidence: 99%

Research on channel modeling technology of visible light communication system based on the ray tracing method

Gu,

Yang,

Wang

2024

J. Phys.: Conf. Ser.

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Visible Light Communication (VLC) is a new mode that combines lighting and communication. Because it can meet the needs of large capacity and ultra-high transmission rate, effective analysis of indoor visible light channel characteristics can better provide VLC systems. We provide a reference basis for the design, and VLC technology using Light Emitting Diode (LED) as the light source has become one of the research hotspots in the field of wireless communications. To solve the problems of existing indoor visible light channel modeling methods such as being ideal, high complexity, or poor in versatility, this paper researches indoor visible light communication channel modeling and related theories and methods, using rays with strong scene adaptability. Based on the tracking method, starting from the need to reduce computational complexity and improve tracking accuracy, a channel modeling method for indoor visible light communication is designed. We propose a high-precision indoor visible light communication channel modeling method that combines central ray tubes and bidirectional ray tracing. We use the forward ray tracing method to model indoor visible light communication channels. The simulation experimental results show that the channel modeling method proposed in this article can effectively improve modeling efficiency.

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“…Vaudelle [29] proposed an approximate analytical effective phase function from a thin slab, which can realize the fast estimation of the asymmetry factor of turbid media. Miramirkhani et al [30] assessed the effect of scattering phase functions on underwater visible light communication channel models and demonstrated that the simplified phase function models (one-term or two-term HG models) result in a large discrepancy of channel gain in a typical underwater scenario. Wang et al [26] proposed a five-parameter two-term Reynolds-McCormick (TTRM) phase function model and compared it with eight different empirical models.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Evaluation of the Phase Function Effects on Light Scattering and Radiative Transfer in Dispersed Systems

Jia

et al. 2022

Photonics

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The light scattering properties of particles play important roles in radiative transfer in many dispersed systems, such as turbid atmosphere, ocean water, nanofluids, composite coatings and so on. As one of the scattering property parameters, the scattering phase functions of particles are strongly dependent on the particle size, size distribution, and morphology, as well as on the complex refractive indices of the particles and surrounding media. For the sake of simplicity, the empirical phase function models are widely used in many practical applications. In this work, we focus on the radiative transfer problem in dispersed systems composed of spherical particles, and give quantitative analyses of the impact of scattering phase functions on the radiative transfer process. We fit the scattering phase functions of four different types of practical dispersed systems using four previously proposed empirical phase function models, including the Henyey–Greenstein (HG) model, Cornette Shanks (CS) model, Reynold and McCormick (RM) model and two-term Reynolds–McCormick (TTRM) model. By comparing the radiative transfer characteristics (i.e., hemispherical reflectance, hemispherical transmittance and total absorptance) of dispersed layers calculated using the Monte Carlo method, the relative errors caused by using the empirical phase functions are systematically investigated. The results demonstrate that the HG, CS and RM models cause obvious errors in the calculation of hemispherical reflectance in many cases. Meanwhile, the induced errors show no obvious regularity, but are related to the particle size and layer optical thickness. Due to the good fitting effect in both forward and backward directions, the TTRM model provides significantly higher performances in fitting the phase functions of all considered cases than the widely used single-term parametrizations. Moreover, for different particle sizes and layer optical thicknesses, the induced errors of the TTRM model in radiative transfer characteristics are very small, especially for the case of polydisperse particles. Our results can be used to guide the design, analysis and optimization of dispersed systems in practical optics and photonics applications.

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Effect of scattering phase function on underwater visible light communication channel models

Cited by 8 publications

References 28 publications

Breakthrough Underwater Physical Environment Limitations on Optical Information Representations: An Overview and Suggestions

Breakthrough Underwater Physical Environment Limitations on Optical Information Representations: An Overview and Suggestions

Research on channel modeling technology of visible light communication system based on the ray tracing method

Quantitative Evaluation of the Phase Function Effects on Light Scattering and Radiative Transfer in Dispersed Systems

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