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Statistical Studies of Fading in Underwater Wireless Optical Channels in the Presence of Air Bubble, Temperature, and Salinity Random Variations (Long Version) [article]

Mohammad Vahid Jamali, Ali Mirani, Alireza Parsay, Bahman Abolhassani, Pooya Nabavi, Ata Chizari, Pirazh Khorramshahi, Sajjad Abdollahramezani, and Jawad A. Salehi
2018 arXiv   pre-print
In this paper, we experimentally study the statistical distribution of intensity fluctuations in underwater wireless optical channels with random temperature and salinity variations as well as the presence  ...  of air bubbles.  ...  Statistical Studies of Fading in Underwater Wireless Optical Channels in the Presence of Air Bubble, Temperature, and Salinity Random Variations (Long Version) Mohammad Vahid Jamali, Ali Mirani, Alireza  ... 
arXiv:1801.07402v2 fatcat:uazr4t4kivdzberkfxssv7e34m

Impact of Turbulent-Flow-Induced Scintillation on Deep-Ocean Wireless Optical Communication

Yang Weng, Yujian Guo, Omar Alkhazragi, Tien Khee Ng, Jen-Hwa Guo, Boon S. Ooi
2019 Journal of Lightwave Technology  
However, studies on scintillation have been limited to emulating channels with uniform temperature and salinity gradients, rather than incorporating the effects of turbulent motion.  ...  With the recent innovations in underwater wireless optical communication (UWOC) for deep-sea exploration, UWOC could be used in conjunction with AUVs for high-speed data uploads near the surface.  ...  [13] and Oubei et al. [14] - [16] have studied the underwater turbulence introduced by air bubbles, temperature, and salinity.  ... 
doi:10.1109/jlt.2019.2928465 fatcat:637uh4xsyfgcddrb3uv3d6ziw4

Physical-Layer Security for Two-Hop Air-to-Underwater Communication Systems With Fixed-Gain Amplify-and-Forward Relaying [article]

Yi Lou, Ruofan Sun, Julian Cheng, Songzuo Liu, Feng Zhou, Gang Qiao
2020 arXiv   pre-print
Further, we thoroughly investigate the effect of levels of air bubbles and temperature gradients in the UWOC channel, and study nonlinear characteristics of the transmission medium and the number of multipath  ...  The UWOC channel is modeled using a unified mixture exponential-generalized Gamma distribution to consider the combined effects of air bubbles and temperature gradients on transmission characteristics.  ...  This is because the generation and break-up of the air bubbles in the UWOC channels causes dramatic and random fluctuations of the underwater optical signals, which can significantly deteriorate the secrecy  ... 
arXiv:2009.09550v1 fatcat:2zj64annmfbrdhwglnzqmt4xbe

Underwater Optical Wireless Communication Systems: A Concise Review [chapter]

Lydia K. Gkoura, George D. Roumelas, Hector E. Nistazakis, Harilaos G. Sandalidis, Alexander Vavoulas, Andreas D. Tsigopoulos, George S. Tombras
2017 Turbulence Modelling Approaches - Current State, Development Prospects, Applications  
The present work summarizes the recent advances in channel modeling and system analysis and design in the area of UOWC.  ...  Underwater optical wireless communications (UOWC) have gained a considerable interest during the last years as an alternative means for broadband inexpensive submarine communications.  ...  In the case of underwater systems, these fluctuations are mainly caused by variations in temperature and salinity of the oceanic water.  ... 
doi:10.5772/67915 fatcat:imefr375fvg6dorcr32umwfkvi

Underwater Optical Communications: A Brief Overview and Recent Developments

Saleha Al-Zhrani, Department of Physics, Faculty of Sciences, King Abdulaziz University, Jeddah-21589, Kingdom of Saudi Arabia, Nada M. Bedaiwi, Intesar F El-Ramli, Abeer Z. Barasheed, Ali Abduldaiem, Yas Al-Hadeethi, Ahmad Umar, Physics Department, Umm Al-Qura University, Al-Qunfudhah University College, Al-Qunfudhah 21912, Kingdom of Saudi Arabia, Department of Physics, Faculty of Sciences, King Abdulaziz University, Jeddah-21589, Kingdom of Saudi Arabia, Department of Physics, University of Tabuk, Duba University College, Tabuk-71491, Kingdom of Saudi Arabia, INToo Solutions, 202-6940 East Blvd, Vancouver, BC, V6M 3V5 (+7 others)
2021 Engineered Science  
Underwater communication technologies have come a long way as they have been implemented either utilizing wired and wireless techniques, through employing acoustic waves or electromagnetic waves (in the  ...  Intriguingly, wireless communications in the optical spectrum have outperformed all the above techniques. This is owing to its high bandwidth and low cost.  ...  Acknowledgment: This work was supported by the Deanship of Scientific Research (DSR), King Abdul Aziz University, Jeddah. The authors, therefore, gratefully acknowledge the DSR technical support.  ... 
doi:10.30919/es8d574 fatcat:2djjap2f4fhgbpiajy5pykrbvy

Underwater Optical Wireless Communication

Hemani Kaushal, Georges Kaddoum
2016 IEEE Access  
In this paper, the main focus is to understand the feasibility and the reliability of high data rate underwater optical links due to various propagation phenomena that impact the performance of the system  ...  Underwater wireless information transfer is of great interest to the military, industry, and the scientific community, as it plays an important role in tactical surveillance, pollution monitoring, oil  ...  TURBULENCE Variation in the refraction index along the propagation path caused due to fluctuations in the density, salinity and temperature of the underwater environment leads to large fluctuations in  ... 
doi:10.1109/access.2016.2552538 fatcat:rpfv7m7vvzbinehfqmj7kxfp34

Survey of energy-autonomous solar cell receivers for satellite–air–ground–ocean optical wireless communication

Meiwei Kong, Chun Hong Kang, Omar Alkhazragi, Xiaobin Sun, Yujian Guo, Mohammed Sait, Jorge A. Holguin-Lerma, Tien Khee Ng, Boon S. Ooi
2020 Progress in Quantum Electronics  
, bubbles, turbulence, and random scattering [14] .  ...  in the long run [12] .  ...  More recently, a unified statistical model has been proposed that considers temperature gradients and the presence of bubbles in both fresh and salty water channels [90] .  ... 
doi:10.1016/j.pquantelec.2020.100300 fatcat:xvgquotzszfhvmy74x3czhbhea

Performance Studies of Underwater Wireless Optical Communication Systems with Spatial Diversity: MIMO Scheme [article]

Mohammad Vahid Jamali, Jawad A. Salehi, Farhad Akhoundi
2016 arXiv   pre-print
In this paper, we analytically study the performance of multiple-input multiple-output underwater wireless optical communication (MIMO UWOC) systems with on-off keying (OOK) modulation.  ...  To mitigate turbulence-induced fading, which is amongst the major degrading effects of underwater channels on the propagating optical signal, we use spatial diversity over UWOC links.  ...  Additionally, experimental studies on the fading statistics of UWOC channels in the presence of air bubbles have quite recently been carried out in [24] .  ... 
arXiv:1508.03952v4 fatcat:a7jd5zj7m5cilim2gvgq55krhi

Acoustofluidics: Theory and simulation of streaming and radiation forces at ultrasound resonances in microfluidic devices

Henrik Bruus
2009 Journal of the Acoustical Society of America  
wireless channels.  ...  Techniques that can exploit a priori statistical characterizations of the fluctuations of the arrivals in the channel impulse response ͑fading statistics͒ will generally outperform systems that do not  ...  We discuss the extension of acoustical measurement of bubbles to radii below 20 µm, a topic of particular relevance to the study of optical scatter in the ocean.  ... 
doi:10.1121/1.4783855 fatcat:cyftnzsenzempdbtk4dd2hzw5u

Grafting acoustic instruments and signal processing: Creative control and augmented expressivity

Dan Overholt
2013 Journal of the Acoustical Society of America  
In the spirit of the text Concert Halls and Opera Houses by L.  ...  In addition, various measurement techniques for this type of space are explored and reported. 9:15 1aAA2. The effect of two different rooms on acoustical and perceptual measures of mixed choir sound.  ...  temperature and salinity (Spice).  ... 
doi:10.1121/1.4830794 fatcat:2sexsmbypjcozjctnorzoiy7te

Speaker comfort and increase of voice level in lecture rooms

Jonas Brunskog, Anders C. Gade, Gaspar Payà Bellester, Lilian Reig Calbo
2008 Journal of the Acoustical Society of America  
Presence vs. absence of a dip in intensity, duration of that dip, and degree of that dip in decibels are manipulated.  ...  Degree of intensity dip has the strongest effect, with a minimal dip in intensity more likely to be perceived as 'kneel' and a strong dip in intensity more likely to be perceived as 'needle. ' The results  ...  We show that the bubble counteracts the pressure buildup necessary for the droplet formation. The channel acoustics and the air bubble dynamics are modeled.  ... 
doi:10.1121/1.2934367 fatcat:xr6gp4ldo5bylnxytx2iumrdmi

Fine‐structure processing, frequency selectivity and speech perception in hearing‐impaired listeners

Olaf Strelcyk, Torsten Dau
2008 Journal of the Acoustical Society of America  
Presence vs. absence of a dip in intensity, duration of that dip, and degree of that dip in decibels are manipulated.  ...  Degree of intensity dip has the strongest effect, with a minimal dip in intensity more likely to be perceived as 'kneel' and a strong dip in intensity more likely to be perceived as 'needle. ' The results  ...  We show that the bubble counteracts the pressure buildup necessary for the droplet formation. The channel acoustics and the air bubble dynamics are modeled.  ... 
doi:10.1121/1.2935148 fatcat:nqyyia5pubamnhqgonegghrudm

Ray tracing in a turbulent, shallow‐water channel

Christian Bjerrum‐Niese, René Lützen, Leif Bjo/rno/
1998 Journal of the Acoustical Society of America  
These have been used to propagate signals in air across regions containing variations in air flow and temperature.  ...  In one experiment, an air-jet was imaged at various distances from the nozzle. In another, the temperature variations in air above a hot metal tip were determined.  ...  Although there are small losses at the surface by transmission, along with losses due to absorption in the acoustic boundary layer, the presence of bubbles and dissolved gas, and turbulence, the relative  ... 
doi:10.1121/1.422455 fatcat:vqypn7trzberzap3bkznkoddcu

Extracting vowel characteristics from smoothed spectra

Jean‐Sylvain Lienard, Maria‐Gabriella Di Benedetto
2000 Journal of the Acoustical Society of America  
Successful communication often requires multichannel data ͑spatial diversity͒ to combat the signal fading due to random fluctuations in the channel.  ...  One of its functions is the estimation of subsurface temperature and salinity fields from satellite observations of height deviation and temperature.  ...  One can even conduct air travel planning, and receive flight and fare information, all by simply speaking to the computer.  ... 
doi:10.1121/1.4743686 fatcat:i5lv7vu575hyjaezn5pllmxyyu

Scattering by two spheres: Theory and experiment

Irina Bjo/rno/, Leif Bjo/rno/
1998 Journal of the Acoustical Society of America  
These have been used to propagate signals in air across regions containing variations in air flow and temperature.  ...  In one experiment, an air-jet was imaged at various distances from the nozzle. In another, the temperature variations in air above a hot metal tip were determined.  ...  Although there are small losses at the surface by transmission, along with losses due to absorption in the acoustic boundary layer, the presence of bubbles and dissolved gas, and turbulence, the relative  ... 
doi:10.1121/1.421626 fatcat:qf2u35fztjfgtgredwhbg53zwm
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