Results 21 to 30 of about 78,267 (285)

Secrecy Capacity of IRS-Assisted Terahertz Wireless Communications With Pointing Errors [PDF]

open access: yes, 2023
This letter considers an intelligent reflecting surface (IRS)-assisted terahertz (THz) communication system in the presence of an arbitrary number of colluding/non-colluding eavesdroppers (Eves). Although the instantaneous channel state information (CSI)
Khel, Ahmad Massud Tota   +3 more
core   +1 more source

Pointing error compensation of electro-optical detection systems using Gaussian process regression

open access: yesInternational Journal of Metrology and Quality Engineering, 2021
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 ...
Tang Qijian   +3 more
doaj   +1 more source

Performance Analysis of Free Space Optical Link with Pointing Errors

open access: yes, 2022
Free-space optical communication (FSO) has been proposed as an attractive alternative to radio frequency communication in the sense that it provides wide bandwidth and high capacity without requirement of license.
‍Jung, Kug-Jin
core   +1 more source

Inverse Solution Error Analysis and Correction of Beam Steering System Based on Risley Prisms

open access: yesApplied Sciences, 2022
The pointing accuracy of the Risley prisms beam-steering system mainly depends on the accuracy of the solution method and the impact of the error on the solution.
Yinuo Song   +4 more
doaj   +1 more source

Modelling Error Rates in Temporal Pointing [PDF]

open access: yesProceedings of the 2016 CHI Conference on Human Factors in Computing Systems, 2016
We present a novel model to predict error rates in temporal pointing. With temporal pointing, a target is about to appear within a limited time window for selection. Unlike in spatial pointing, there is no movement to control in the temporal domain; the user can only determine when to launch the response.
Oulasvirta, Antti, Lee, Byungjoo
openaire   +3 more sources

Pointing Model for Vehicular Quantum Communication Terminals Based on Line-of-Sight Attitude Measurement

open access: yesIEEE Photonics Journal
Vehicular quantum communication terminals (VQCTs) are crucial for establishing global-scale quantum networks. High-precision line-of-sight (LOS) pointing is essential for fast and reliable acquisition in satellite-based quantum key distribution (QKD ...
Zihao Wang   +8 more
doaj   +1 more source

Characterization of orbital angular momentum-multiplexed FSO channel in the presence of pointing errors

open access: yes, 2023
Free space optical communication (FSO) uses laser transmitters at near-infrared wavelengths for line-of-sight wireless communication. Through the use of advanced laser beams instead of the conventional Gaussian-shaped beam, orbital angular momentum (OAM)
Tadayyoni, Hamed   +2 more
core   +1 more source

On the Performance Analysis of Decode-and-Forward Multi-Hop Hybrid FSO/RF Systems With Hard-Switching Configuration

open access: yesIEEE Photonics Journal, 2019
In this paper, we introduce a decode-and-forward multi-hop hybrid free-space optical/radio frequency (FSO/RF) system. The FSO link is assumed to follow Gamma-Gamma distribution with the combined effects of pointing errors and path loss under intensity ...
Wagdy A. Alathwary   +1 more
doaj   +1 more source

Dataset 1. Mean pointing errors

open access: yes, 2013
Pointing errors (º) were measured for each individual participant in sets of 12 trials before (pre-test) and after (post-test) the first set of prism adaptation, and at the end of the experimental session (late-test). For each participant the errors were
Alexandra List (467271)   +2 more
core   +1 more source

Secrecy performance of FSO communication systems with non‐zero boresight pointing errors

open access: yesIET Communications, 2021
Free space optical (FSO) communication is a promising candidate for the next generation (5G and beyond) wireless communication systems, due to its merits (i.e. low latency, high data rate, and license‐free band, among others).
Gyan Deep Verma   +3 more
doaj   +1 more source

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