Modulation Instability and Phase-Shifted Fermi-Pasta-Ulam Recurrence [PDF]
Scientific Reports, 2016 AbstractInstabilities are common phenomena frequently observed in nature, sometimes leading to unexpected catastrophes and disasters in seemingly normal conditions. One prominent form of instability in a distributed system is its response to a harmonic modulation.
Kimmoun, O. +11 more
openaire +10 more sources
A Survey on Robust Modulation Requirements for the Next Generation Personal Satellite Communications
Frontiers in Communications and Networks, 2022 The unrelenting technological advancement in the generation of wireless networks in recent years has awakened the motion concerning the inclusion of satellites in personal communications.
Julius Ssimbwa +3 more
doaj +1 more source
Ultrasonic Modulation of Coherent Light in Raman–Nath Diffraction
IEEE Photonics Journal, 2018 This paper analyzes the ultrasonic modulation of coherent light in Raman–Nath acousto-optic diffraction. We find that the frequency shifts of the diffracted light cause the periodic variation of the ultrasound-modulated light intensity with time ...
Weng Cuncheng, He Youwu
doaj +1 more source
Electronic equalization for advanced modulation formats in dispersion-limited systems [PDF]
, 2004 We investigate in this letter the use of electronic equalization on dispersion limited systems for different modulation formats. Besides analyzing equalization on standard NRZ intensity modulation as a reference, we focus on two advanced modulation ...
Curri, Vittorio +3 more
core +1 more source
Solving Doppler-Angle Ambiguity of BPSK-MIMO FMCW Radar System
IEEE Access, 2021 In a multiple-input multiple-output (MIMO) radar system, binary phase-shift keying (BPSK) modulation is widely used to separate signals transmitted from multiple transmit (Tx) antennas.
Jaehoon Jung +3 more
doaj +1 more source
25 Gbit/s differential phase-shift-keying signal generation using directly modulated quantum-dot semiconductor optical amplifiers [PDF]
, 2015 This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Appl. Phys. Lett. 106, 213501 (2015) and may be found at https://doi.org/10.1063/1.4921785.Error-free
Bimberg, Dieter +6 more
core +1 more source
Rotor loss reduction using segmented inverter in surface-mounted permanent magnet drive [PDF]
, 2017 In this paper, the influence of different switching modulation arrangements, i.e. current waveform modulation- and phase-shift, on the resultant current waveform of an electrical machine drive consisting of a two segment inter-leaved inverter feeding a ...
Al-Ani, Mahir +2 more
core +1 more source
KNN BASED CLASSIFICATION OF DIGITAL MODULATED SIGNALS
International Islamic University Malaysia Engineering Journal, 2016 Demodulation process without the knowledge of modulation scheme requires Automatic Modulation Classification (AMC). When receiver has limited information about received signal then AMC become essential process. AMC finds important place in the field many
Sajjad Ahmed Ghauri
doaj +1 more source
An Energy-Synchronous Direct Antenna Modulation Method for Phase Shift Keying
IEEE Open Journal of Antennas and Propagation, 2020 A novel scheme for transmitting broadband phase shift keyed signals from electrically small antennas using energy-synchronous direct antenna modulation is described. We outline fundamental operating principles of the method and experimentally compare its
Kurt Schab +2 more
doaj +1 more source
Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
FEBS Letters, EarlyView.Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley +1 more source