Results 41 to 50 of about 5,020,295 (161)
, 2002 The performance of burst-by-burst adaptive modulation is studied in conjunction with reduced complexity turbo equalization over a wideband multi-path Rayleigh fading channel.
Wong, C H, Yeap, B L, Hanzo, L
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PSO Algorithm on PAPR Reduction Performance of Asymmetrically Clipped Optical‐OFDM
Applied 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
, 2008 —We consider beamforming assisted detection for multiple antenna aided multiuser systems that employ the bandwidth efficient quadrature amplitude modulation scheme.
Chen, Sheng +3 more
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Reducing residual amplitude modulation in electro-optic phase modulators by erasing photorefractive scatter [PDF]
, 2013 Residual amplitude modulation (RAM) is an unwanted noise source in electro-optic phase modulators. The analysis presented shows that while the magnitude of the RAM produced by a MgO:LiNbO3 modulator increases with intensity, its associated phase becomes ...
Jaatinen, Esa, Sathian, Juna
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Identity‐Enabled CDMA LiDAR for Massively Parallel Ranging with a Single‐Element Receiver
Laser &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
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Nonlinear Electron Interactions With Intense VLF Waves From Transmitters
Journal 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
Near-Capacity Turbo Coded Soft-decision Aided DAPSK/Star-QAM [PDF]
, 2011 Low-complexity non-coherently detected Differential Amplitude and Phase-Shift Keying (DAPSK) schemes constitute an ideal candidate for wireless communications.
Liang, Dandan +5 more
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Imaging the Shallow Structure Beneath Askja Volcano, Iceland, With Ambient Noise Tomography
Journal 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
Fennel Tea Has a Region‐Specific Effect on the Motility of the Stomach
Neurogastroenterology &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
Amplitude modulation in δ Sct stars: statistics from an ensemble study of Keplertargets [PDF]
, 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
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