Results 51 to 60 of about 24,346 (205)

Modeling and Optimization of Frequency‐Doubled Radio‐Over‐Fiber Link Based on Deep Learning Technique

open access: yesAdvanced Photonics Research, Volume 7, Issue 3, March 2026.
This article proposes a deep learning (DL) approach for modeling and optimizing frequency‐doubled radio‐over‐fiber links. By collectively replacing traditional components with DL model, accurate system evaluation is achieved. Moreover, through an end‐to‐end architecture, performance optimization is accomplished.
Difei Shi   +3 more
wiley   +1 more source

Expanded Phenotype of PAX2‐Related Papillorenal Syndrome: A Case Featuring FSGS, Atypical Retinopathy, Cerebellar Hypoplasia, and ADHD

open access: yesClinical Case Reports, Volume 14, Issue 2, February 2026.
ABSTRACT Papillorenal syndrome (PAPRS), or renal coloboma syndrome, is a rare autosomal dominant disorder caused by PAX2 mutations. It classically manifests with renal hypodysplasia and optic nerve anomalies. However, recent literature suggests an expanding phenotypic spectrum.
Nadira Sultana   +2 more
wiley   +1 more source

Peak-to-Average Power Ratio in the Circuit Design of a 20MHz Bandwidth of a Wireless LAN IEEE 802.11n

open access: yesInternational Journal of Technology, 2015
An important aspect of the Wireless Local Area Network’s (WLAN) physical layer design is its Peak-to-Average Power Ratio (PAPR) that has an important role in the power amplifier’s linearity and efficiency.
Hendra Setiawan
doaj   +1 more source

Inward Leakage in Tight-Fitting PAPRs [PDF]

open access: yesJournal of Environmental and Public Health, 2011
A combination of local flow measurement techniques and fog flow visualization was used to determine the inward leakage for two tight-fitting powered air-purifying respirators (PAPRs), the 3M Breathe-Easy PAPR and the SE 400 breathing demand PAPR. The PAPRs were mounted on a breathing machine head form, and flows were measured from the blower and into ...
Koh, Frank C.   +2 more
openaire   +2 more sources

Contribution of non‐orthogonal multiple access signalling to practical multibeam satellite deployments

open access: yesInternational Journal of Satellite Communications and Networking, Volume 44, Issue 1, Page 73-88, January/February 2026.
The potential gains of NOMA were evaluated in a satellite system with heterogeneous receivers, after considering the use of specific DVB‐S2X MODCODs, along with the impact of non‐linearities. It was concluded that a judicious power allocation in NOMA, jointly optimized with the IBO of the PAs, can yield significant sum‐rate gains.
Tomás Ramírez, Carlos Mosquera
wiley   +1 more source

Coherent Optical DFT-Spread OFDM

open access: yes, 2011
We consider application of the discrete Fourier transform-spread orthogonal frequency-division multiplexing (DFT-spread OFDM) technique to high-speed fiber optic communications.
Wang, Fanggang, Wang, Xiaodong
core   +2 more sources

PAPR: Proximity Attention Point Rendering

open access: yesAdvances in Neural Information Processing Systems 36, 2023
Learning accurate and parsimonious point cloud representations of scene surfaces from scratch remains a challenge in 3D representation learning. Existing point-based methods often suffer from the vanishing gradient problem or require a large number of points to accurately model scene geometry and texture.
Yanshu Zhang   +3 more
openaire   +3 more sources

Structural Basis of the Light‐Switchable Interaction between an Azobenzene Side Chain in a Biosynthetic Protein and α‐Cyclodextrin

open access: yesChemistryOpen, Volume 15, Issue 1, January 2026.
X‐ray crystallographic analysis of super‐folder green fluorescent protein (sfGFP), a common reporter protein, displaying p‐(phenylazo)‐L‐phenylalanine (Pap) at amino acid position 39 on its surface in complex with α‐cyclodextrin (α‐CD) reveals an unexpected conformation of the photoswitchable side chain and illustrates its light‐dependent ...
Andreas Eichinger   +4 more
wiley   +1 more source

Perbandingan PAPR Metode CSLM dan SSLM pada Pengirim OFDM

open access: yesJurnal Nasional Teknik Elektro dan Teknologi Informasi, 2019
OFDM has multiple weaknesses, one of which is a high Peak to Power Average (PAPR). The maximum power value of the OFDM signal will be much greater than the average power, so the efficiency of the amplifier will be reduced.
Rana Nuriadnyana   +2 more
doaj   +1 more source

Beam Domain MIMO-OFDM Optical Wireless Communications With PAPR Reduction

open access: yesIEEE Photonics Journal, 2023
Multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM), confirmed as an efficient technique, has been applied in optical wireless communications (OWCs) to improve the transmission rate.
Chen Sun   +5 more
doaj   +1 more source

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