Results 61 to 70 of about 1,237,711 (248)
Modulation Identification and Carrier Recovery System for Adaptive Modulation in Satellite Communications [PDF]
, 2005 We introduce the modulation identification technique implementing the multimode phase locked loop (PLL) in the satellite communication using adaptive modulation scheme which is a countermeasure against the rain attenuation.
Kohno, Ryuji +2 more
core +1 more source
Modulation of Surface Plasmonic Bending Beam via Nanoslit Interactions
Photonics, 2022 The discussion of resonance mechanisms for artificial structural units has always been a key to producing highly efficient, active and tunable meta-devices in the fields of controlling surface plasmon polaritons (SPPs) to generate surface plasmonic ...
Xiaoming Li +4 more
doaj +1 more source
Large phase-transition-induced magnetic anisotropy change in (Co/Pt)2/VO2 heterostructure
, 2018 We report the phase-transition controlled magnetic anisotropy modulation in the (Co/Pt)2/VO2 heterostructure, where VO2 is introduced into the system to applied an interfacial strain by its metal-insulator transition. A large reversible modulation of the
Chen, Yanxue +5 more
core +1 more source
Electronics Letters, 2000 A semiconductor quantum device which enables the phase modulation of terahertz signals is described. Modulation-doped parabolic quantum wells enable the electronic control of dispersion at terahertz frequencies. Device characterisation with terahertz time-domain spectroscopy shows a phase modulation for frequencies up to 4 THz.
Gottfried Strasser +2 more
openaire +2 more sources
Underwater Wireless Optical Communication Based on DPSK Modulation and Silicon Photomultiplier
IEEE Access, 2020 In this paper, a promising phase-modulated underwater wireless optical communication (UWOC) system with silicon photomultiplier (SiPM) based receiver is proposed for the first time and its feasibility has been experimentally demonstrated in a laboratory ...
Xinke Tang +8 more
doaj +1 more source
Hiding Full-Color Images into Audio with Visual Enhancement via Residual Networks
Cryptography, 2023 Watermarking is a viable approach for safeguarding the proprietary rights of digital media. This study introduces an innovative fast Fourier transform (FFT)-based phase modulation (PM) scheme that facilitates efficient and effective blind audio ...
Hwai-Tsu Hu, Tung-Tsun Lee
doaj +1 more source
Optimum predetection diversity receiving system Patent [PDF]
, 1967 Development of optimum pre-detection diversity combining receiving system adapted for use with amplitude modulation, phase modulation, and frequency modulation ...
Honey, R. W., Katz, L., Simas, V. R.
core +1 more source
Optical Phase Locking techniques: an overview and a novel method based on Single Side Sub-Carrier modulation [PDF]
, 2008 A short overview on Optical Phase locking techniques and a detailed description of the Phase Locking technique based on Sub-Carriers modulation is presented.
Camatel, S., Ferrero, Valter
core +2 more sources
Phase-controlled polarization modulators [PDF]
SPIE Proceedings, 2012 We report technology development of millimeter/submillimeter polarization modulators that operate by introducing a variable, controlled phase delay between two orthogonal polarization states. The variable-delay polarization modulator (VPM) operates via the introduction of a variable phase delay between two linear orthogonal polarization states ...
Chuss D. T. +7 more
openaire +2 more sources
Wave Analogs of Media Based on Phase Locked Loops
Известия высших учебных заведений России: Радиоэлектроника, 2020 Introduction. At present, phase locked loops (PLLs) are widely used: from optimal signal detection and frequency synthesis to automatic control of phase distribution in phased scanned arrays.
L. A. Tsyrulnikova +2 more
doaj +1 more source