Results 31 to 40 of about 1,156,950 (116)

Hybrid VLC–IR Communication System With Beam‐Steered Uplink and Turbo Coding Under Mobility

open access: yesIET Optoelectronics, Volume 20, Issue 1, January/December 2026.
This paper presents a hybrid VLC–IR communication system integrating a beam‐steered infrared uplink with Turbo coding for reliable indoor optical wireless links. The proposed architecture achieves BER below 10−3 at 10 dB SNR and maintains stable coverage under NLOS conditions through adaptive beam steering.
Saeed Ahmed Ansari
wiley   +1 more source

PSO Algorithm on PAPR Reduction Performance of Asymmetrically Clipped Optical‐OFDM

open access: yesApplied Computational Intelligence and Soft Computing, Volume 2026, Issue 1, 2026.
This research presents a novel hybrid optimization framework combining artificial neural networks (ANN) and particle swarm optimization (PSO) to mitigate the high peak‐to‐average power ratio (PAPR) in asymmetrically clipped optical‐orthogonal frequency division multiplexing (ACO‐OFDM) systems. While conventional PTS effectively reduces PAPR, it suffers
Hermansyah Alam   +5 more
wiley   +1 more source

Identity‐Enabled CDMA LiDAR for Massively Parallel Ranging with a Single‐Element Receiver

open access: yesLaser &Photonics Reviews, Volume 19, Issue 23, December 3, 2025.
A novel LiDAR system integrates CDMA modulation with a single‐element detector to achieve massive channel parallel 3D imaging. By using a user identification code and a correlation‐based feedback loop, it overcomes signal collisions and the near‐far problem.
Yixiu Shen, Zi Heng Lim, Guangya Zhou
wiley   +1 more source

Reading television after 25 years: A new foreword by John Hartley

open access: yes, 2003
Reading Television was the first book to push the boundaries of television studies beyond the insights offered by cultural studies and textual analysis, creating a vibrant new field of study.
Hartley, John
core  

Adaptive minimum symbol error rate beamforming assisted receiver for quadrature amplitude modulation systems

open access: yes, 2006
An adaptive beamforming assisted receiver is proposed for multiple antenna aided multiuser systems that employ bandwidth efficient quadrature amplitude modulation (QAM).
Du, H.Q, Hanzo, L., Chen, S.
core   +1 more source

Nonlinear Electron Interactions With Intense VLF Waves From Transmitters

open access: yesJournal of Geophysical Research: Space Physics, Volume 130, Issue 12, December 2025.
Abstract The impact on electron lifetimes of nonlinear interactions with the most intense very low frequency (VLF) waves from transmitters has hitherto been neglected in radiation belt codes. Here, we show the presence of a small population of intense wave packets, originating from ground‐based VLF transmitters and reaching 10 mV/m around the magnetic ...
Didier Mourenas   +5 more
wiley   +1 more source

Amplitude modulation in δ Sct stars: statistics from an ensemble study of Keplertargets [PDF]

open access: yes, 2016
We present the results of a search for amplitude modulation of pulsation modes in 983 δ Sct stars, which have effective temperatures between 6400 ≤ Teff ≤ 10 000 K in the Kepler Input Catalogue and were continuously observed by the Kepler Space Telescope
Kurtz, Donald W.   +5 more
core   +1 more source

Imaging the Shallow Structure Beneath Askja Volcano, Iceland, With Ambient Noise Tomography

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 12, December 2025.
Abstract Askja is a large central volcano in the Northern Volcanic Zone (NVZ) of Iceland which last erupted effusively in 1961 and subsequently experienced steady deflation from the 1970s until August 2021, when GPS and InSAR measurements confirmed that it had begun re‐inflating.
Joseph Fone   +5 more
wiley   +1 more source

TV stories : from representation to productivity [PDF]

open access: yes, 2009
This chapter revisits the concept of the ‘bardic function’ (Fiske & Hartley 1978), using historical analysis of the oral bardic institutions to re-theorise it for the era of interactive media and digital storytelling.
Hartley, John
core   +1 more source

Fennel Tea Has a Region‐Specific Effect on the Motility of the Stomach

open access: yesNeurogastroenterology &Motility, Volume 37, Issue 12, December 2025.
Fennel tea has a region‐specific effect on the stomach motility. It relaxes the fundus and the corpus and acts pro‐motility in the antrum. The store operated Ca2+ entry blocker SKF‐96365 hampers the spasmolytic effect of fennel tea in the fundus and corpus. The image was created using Biorender.
Anita Annahazi   +5 more
wiley   +1 more source

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