Results 71 to 80 of about 1,236,123 (244)
Eight-Channel Optical Add-Drop Multiplexer With Cascaded Parent-Sub Microring Resonators
IEEE Photonics Journal, 2015 An eight-channel integrated optical add-drop multiplexer with cascaded parent-sub microring resonators is experimentally demonstrated on a silicon-on-insulator (SOI) substrate.
Xian Xiao +5 more
doaj +1 more source
Secrecy performance analysis over cascaded fading channels [PDF]
IET Communications, 2019 In this study, the authors investigate the secrecy performance at the physical layer of wireless communication systems where the channels are modelled as cascaded fading channels, in which the fading effects are worse than those in the cellular communication channels like Rayleigh and Nakagami‐ m
openaire +3 more sources
Symmetry‐Guided Multifunctional Acoustic System Based on Mechanically Actuated Sonic Crystals
Advanced Engineering Materials, EarlyView.This study presents the design, simulation, and experimental validation of amultifunctional acoustic metamaterial based on rotationally engineered sonic crystals.By tuning cylinder orientations, controllable band gaps and six distinct functionalities—including switching, topological insulation, beam splitting, and logic operations—areachieved ...
Yuanyan Zhao +2 more
wiley +1 more source
Apodized fiber Bragg grating filters for efficient QKD channel separation in QKD-over-DWDM systems
Scientific ReportsThis study theoretically investigates the optimal filter configuration for separating a quantum key distribution (QKD) channel from classical C-band communication channels in a discrete-variable (DV) QKD-over-dense wavelength division multiplexing (DWDM)
Namwook Joe +4 more
doaj +1 more source
Exergy optimisation for cascaded thermal storage [PDF]
Cascaded thermal storage, consisting of multiple Phase Change Materials (PCMs) with different melting temperatures, has been proposed to solve the problem of poor heat transfer caused by unavoidable decrease of temperature differences during heat ...
Lapkin, Alexei +2 more
core
Advanced Engineering Materials, EarlyView.The OntOMat ontology establishes a structured framework for polymer matrix fiber reinforced composite materials, integrating manufacturing processes, characterization methods, and multiscale design through the VDI/VDE 3682 formalized process description standard.
Nicolas Christ +19 more
wiley +1 more source
A Low-Rank Tucker Decomposition-Based Channel Estimator for IRS-Assisted mmWave OFDM Systems
IEEE Open Journal of the Communications SocietyIntelligent reflecting surface (IRS)-assisted millimeter-wave (mmWave) systems have emerged as a promising solution to enhance coverage and spectral efficiency, while wideband transmission and frequency-selective fading lead to high-dimensional channel ...
Xi Han +5 more
doaj +1 more source
Analysis of Cascaded Codes Using LDPC Code and ＲS Codeof Visible Light Communication Channel Coding
Journal of Harbin University of Science and Technology, 2017 As visible light communication may be affected by a lot of noise，channel coding receives wide attention it is an important means of communication error correction.
CHE Nan, SUN Wei, LIU Hui
doaj +1 more source
Cascaded channels and the equivocation inequality
Metrika, 1978 The variation of the “equivocation” and the average mutual information over cascaded channels is studied, using the generalized information measures (entropies of degree α) and Renyi information measures (entropies of order α). The “equivocation inequality”, which indicates that the equivocation can never decrease as we go further from the input on a ...
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On the Performance Analysis of Wireless Receiver in Cascaded Fading Channel [PDF]
, 2009 In this paper, we provide a unified analysis for wireless system over cascaded fading channels modeled either by cascaded Nakagami-m or Weibull fading models.
Ajay K. Sharma +5 more
core +1 more source