Results 71 to 80 of about 31,839 (188)
Transient response analysis for DC-DC boost converter [PDF]
, 2014 DC-DC Boost Converter and Hybrid Posicast Controller is developed and simulated using MATLAB Simulink software. DC-DC Boost converter has a very high overshoot and a very high settling time which produce oscillated output response.
Libau, Charles Muling
core
Cascaded FSO-VLC Communication System [PDF]
IEEE Wireless Communications Letters, 2017 The proposed cascaded free space optics (FSO)-visible light communication (VLC) system consists of multiple VLC access points which caters the end users connected via a decode and forward relay to the FSO backhaul link. The FSO link is assumed to be affected by path-loss, pointing error, and atmospheric turbulence while the end-to-end signal-to-noise ...
Akash Gupta +3 more
openaire +2 more sources
Tijdschrift voor Economische en Sociale Geografie, EarlyView.Abstract Several theories have been proposed to explain the family changes that have occurred in Europe since the mid‐1960s. It is often assumed that as these changes occurred simultaneously; they have a common origin and represent the same demographic shift.
Adrita Banerjee +4 more
wiley +1 more source
On the Performance of MIMO FSO Communications over Double Generalized Gamma Fading Channels
, 2015 A major performance degrading factor in free space optical communication (FSO) systems is atmospheric turbulence. Spatial diversity techniques provide a promising approach to mitigate turbulence-induced fading.
Aminikashani, Mohmmadreza +2 more
core +1 more source
Mapping Dental Care for Children and Adolescents With Rare Diseases: A Brazilian Multicentre Study
Community Dentistry and Oral Epidemiology, Volume 54, Issue 2, Page 163-173, April 2026.ABSTRACT Objectives To describe the landscape of dental care provided by specialised centres for children and adolescents with rare diseases (RDs) in the state of Minas Gerais, southeastern Brazil. Methods A retrospective cross‐sectional study was conducted involving individuals aged 0–18 years with a confirmed diagnosis of a RD who received care at ...
Heloisa Vieira Prado +21 more
wiley +1 more source
Performance Analysis of Hard-Switching Based Hybrid FSO/RF System over Turbulence Channels
Computation, 2019 The hybrid system of free space optic (FSO) and radio frequency (RF) has come forth as alternative good solution for increasing demand for high data rates in wireless communication networks.
Hira Khalid +3 more
doaj +1 more source
BER Performance of IM/DD FSO System with OOK using APD Receiver [PDF]
, 2014 In this paper, the performance of intensity-modulated with direct detection (IM/DD) free space optical (FSO) system using the on-off keying (OOK) and avalanche photodiode (APD) receiver is observed. The gamma-gamma model is used to describe the effect of
Milić, D. N. +2 more
core
Jordanian Journal of Computers and Information TechnologyFree-space optical (FSO) communication is a vital solution to meet the growing demand for high-bandwidth satellite-to-ground communication, offering advantages such as higher data rates and security compared to traditional RF systems.
Mouna Garai, Maha Sliti
doaj +1 more source
Performance analysis of FSO using relays and spatial diversity under log-normal fading channel
, 2018 The performance analysis of free space optical communication (FSO) system using relays and spatial diversity at the source is studied in this paper.
Jha, Pranav Kumar +3 more
core +1 more source
Nanophotonics, Volume 15, Issue 5, 16 March 2026.A CMOS‐compatible silicon‐photonic 4 × 4 coherent receiver array spatially samples turbulence‐distorted wavefronts and, with maximum‐ratio combining, enables signal recovery. Experimental BPSK tests under moderate turbulence approach theoretical combining efficiency, reducing BER from 1E‐2 to 1E‐15.
Alireza Fardoost +7 more
wiley +1 more source