Abstract
This paper focuses on the effect of the receiver’s tilted angle on the capacity of a clear ocean water Underwater Wireless Optical Communication (UWOC) system. To achieve this goal, the relationship between the channel capacity and the receiver’s tilted angle is investigated. First, we propose a double-exponential fading model with pointing error which can more accurately depict the channel of clear ocean water UWOC instead of the traditional Beer’s law model. Based on this channel model, we present the close-form expression of the capacity bounds of the UWOC system. Then, an optimization problem is formulated to improve the capacity by tilting the receiving plane. Both theoretical analyses and simulation results verify that the capacity bounds of UWOC can be enhanced dramatically by tilting the receiver plane at an optimal angle. Thus, in practice, we can provide an effective design strategy for a UWOC system.
Highlights
Underwater wireless optical communication (UWOC) has attracted considerable attention due to its high band-width and large data rates compared with conventional acoustic communications [1,2,3].in UWOC, the received signal suffers severe attenuation effects caused by the optical properties of the water channel, namely, absorption and scattering, which is defined as channel loss in [4,5] and degrades the system performance
In UWOC, the received signal suffers severe attenuation effects caused by the optical properties of the water channel, namely, absorption and scattering, which is defined as channel loss in [4,5] and degrades the system performance
3, we derive the theoretical of improve the capacity by tilting the receiver plane; Section presents numerical and simulation results the capacity bounds for the UWOC channel
Summary
Underwater wireless optical communication (UWOC) has attracted considerable attention due to its high band-width and large data rates compared with conventional acoustic communications [1,2,3]. Electronics 2020, 9, 2072 more accurately depict the UWOC channel loss, but neither of them considered the pointing loss between thechannel transmitter receiverofdue to the receiverthe misalignment. The tight bounds on the capacity channel model with a pointing errorloss, angle in we a practical to thoroughlychannel study in [11], and considering the pointing in existing this paper, proposeenvironment a new double-exponential the capacity a UWOC. Angle existing in a practical environment to thoroughly study thecapacity capacity performance of the UWOC system by tilting receiver method plane. We consider thethe optimizing of the capacity of the both verify the effects of tilting the receiver plane on the capacity enhancement. The double-exponential with pointing error tilting theremainder receiver plane the capacity enhancement. 4, the optimization problem is expressions formulated to angle modelfor is presented
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
