Wireless energy harvesting based asymmetric RF/FSO system with transmit antenna selection and receive diversity over M-distribution channel and non-zero boresight pointing error
Sign Up to like & getrecommendations! Published in 2020 at "Optics Communications"
DOI: 10.1016/j.optcom.2019.125219
Abstract: Abstract This paper evaluates the performance of an energy harvesting based asymmetric radio frequency (RF)/ free space optical (FSO) system with transmit antenna selection (TAS) and received diversity techniques. The source is equipped with multiple… read more here.
Keywords: system; diversity; energy; transmit antenna ... See more keywords
Pointing error compensation of electro-optical detection systems using Gaussian process regression
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Metrology and Quality Engineering"
DOI: 10.1051/ijmqe/2021020
Abstract: Pointing accuracy is an important indicator for electro-optical detection systems, as it significantly affects the system performance. However, as a result of misalignment, nonperpendicularity in the manufacturing and assembly processes, as well as the sensor… read more here.
Keywords: regression; electro optical; process; pointing error ... See more keywords
Real-Time Estimation of Wind-Induced Pointing Error via Accelerations Measurement for Large Reflector Antenna
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Access"
DOI: 10.1109/access.2020.2984636
Abstract: The online monitoring of pointing error (PE) caused by the main reflector (MR) deformation under wind disturbance has become a knotty problem for large reflector antennas. This paper presents a real-time estimation algorithm for monitoring… read more here.
Keywords: real time; large reflector; pointing error; wind ... See more keywords
Secrecy Performance of FSO Using HD and IM/DD Detection Technique Over F-Distribution Turbulence Channel With Pointing Error
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Wireless Communications Letters"
DOI: 10.1109/lwc.2021.3098305
Abstract: This work is concerned with the secrecy performance of a free-space optical (FSO) communication system over Fisher-Snedecor $\mathcal {F}$ -distribution turbulence fading channel. Considering the influence of pointing error, atmospheric turbulence and different detection technique… read more here.
Keywords: secrecy performance; detection; detection technique; turbulence ... See more keywords
Pointing Error Modeling of mmWave to THz High-Directional Antenna Arrays
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Wireless Communications Letters"
DOI: 10.1109/lwc.2022.3205730
Abstract: This letter focuses on providing an analytical framework for the quantification and evaluation of the pointing error at high-frequency millimeter wave (mmWave) and terahertz (THz) communication links. For this aim, we first characterize the channel… read more here.
Keywords: mmwave thz; modeling mmwave; antenna; error ... See more keywords
Unified Finite Series Approximation of FSO Performance Over Strong Turbulence Combined With Various Pointing Error Conditions
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Communications"
DOI: 10.1109/tcomm.2020.3008459
Abstract: In this paper, we investigate both the bit error rate (BER) and outage performance of free-space optical (FSO) links over strong turbulence combined with various pointing error conditions. Considering atmospheric turbulence and pointing errors as… read more here.
Keywords: turbulence; combined various; turbulence combined; strong turbulence ... See more keywords
Optimal Positioning of Hovering UAV Relays for Mitigation of Pointing Error in Free-Space Optical Communications
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Communications"
DOI: 10.1109/tcomm.2022.3204830
Abstract: The relay positions or hop distances in a multi-hop relaying scheme is an important parameter that can be optimized in order to mitigate the angle-of-arrival variance or pointing error in a free-space optical (FSO) backhaul… read more here.
Keywords: hop; free space; pointing error; error free ... See more keywords
Modeling and digital calibration for the mirror normal pointing error of the 2D scanning reflector.
Sign Up to like & getrecommendations! Published in 2023 at "Applied optics"
DOI: 10.1364/ao.483518
Abstract: The 2D scanning reflector (2DSR) has been widely used in various important opto-mechanical systems. The pointing error of the mirror normal of the 2DSR will greatly affect the optical axis pointing accuracy. In this work,… read more here.
Keywords: mirror normal; calibration; error; digital calibration ... See more keywords
Researching pointing error effect on laser linewidth tolerance in space coherent optical communication systems.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.447408
Abstract: In order to evaluate the pointing error effect on laser linewidth tolerance in a space coherent optical communication system, we derive a closed-form bit error rate (BER) model for binary phase-shift-keying (BPSK) modulation and heterodyne… read more here.
Keywords: pointing error; linewidth tolerance; error; laser linewidth ... See more keywords
Average symbol error probability and channel capacity of the underwater wireless optical communication systems over oceanic turbulence with pointing error impairments.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.457043
Abstract: The influence of oceanic turbulence and pointing error impairments on the underwater wireless optical communication (UWOC) systems is considered in this study. We propose a generalized fading model, which comprises the path loss due to… read more here.
Keywords: error impairments; power; error; pointing error ... See more keywords
Adaptive Beam Divergence Control to Mitigate Scintillation Effect Caused by Pointing Error in Vertical FSO Transmissions
Sign Up to like & getrecommendations! Published in 2023 at "Sensors"
DOI: 10.3390/s23115045
Abstract: Free-space optical (FSO) communication has been studied for next-generation network systems. Because an FSO system establishes point-to-point communication links, maintaining alignment among the transceivers is a critical challenge. In addition, atmospheric turbulence causes significant signal… read more here.
Keywords: scintillation; fso; effect; divergence ... See more keywords