Results 21 to 30 of about 6,346,538 (309)
Deep frequency modulation interferometry
Optics Express, 2015 Laser interferometry with pm/Hz precision and multi-fringe dynamic range at low frequencies is a core technology to measure the motion of various objects (test masses) in space and ground based experiments for gravitational wave detection and geodesy. Even though available interferometer schemes are well understood, their construction remains complex ...
O. Gerberding
openaire +3 more sources
Orthogonal Time Frequency Space Modulation [PDF]
IEEE Wireless Communications and Networking Conference, 2017 A new two-dimensional modulation technique called Orthogonal Time Frequency Space (OTFS) modulation designed in the delay-Doppler domain is introduced.
R. Hadani +10 more
semanticscholar +1 more source
Orthogonal Time Frequency Space Modulation—Part I: Fundamentals and Challenges Ahead [PDF]
IEEE Communications Letters, 2022 This letter is the first part of a three-part tutorial on orthogonal time frequency space (OTFS) modulation, which is a promising candidate waveform for future wireless networks.
Zhiqiang Wei +4 more
semanticscholar +1 more source
Applied Sciences, 2022 Laser processing platform for micro crystal resonator (MCR) frequency modulation is an important piece of equipment to apply laser etching technology to the MCR frequency modulation process.
Jian Hu +4 more
doaj +1 more source
Applied Sciences, 2022 The adjustment of the natural frequency of a micro crystal resonator (MCR) is the key requirement in its manufacturing, which determines the actual performance of the product. Laser processing is a new method for MCR frequency modulation, and its process
Jian Hu +5 more
doaj +1 more source
Orthogonal Time-Frequency Space Modulation: A Promising Next-Generation Waveform
IEEE wireless communications, 2021 Sixth-generation (6G) wireless networks are envisioned to provide global coverage for the intelligent digital society of the near future, ranging from traditional terrestrial to non-terrestri-al networks, where reliable communications in high-mobility ...
Zhiqiang Wei +6 more
semanticscholar +1 more source
Brain Stimulation, 2020 BACKGROUND Abnormal beta band activity in the subthalamic nucleus (STN) is known to be exaggerated in patients with Parkinson's disease, and the amplitude of such activity has been associated with akinetic rigid symptoms.
A. Canessa +3 more
semanticscholar +1 more source
Learning of Time-Frequency Attention Mechanism for Automatic Modulation Recognition [PDF]
IEEE Wireless Communications Letters, 2021 Recently, deep learning-based image classification and speech recognition approaches have made extensive use of attention mechanisms to achieve state-of-the-art recognition, which demonstrates the effectiveness of attention mechanisms.
Shan Lin, Yuan Zeng, Yi Gong
semanticscholar +1 more source
Sensors, 2021 In this paper, we propose underwater acoustic (UWA) communications using a generalized sinusoidal frequency modulation (GSFM) waveform, which has a distinct ambiguity function (AF) and correlation function characteristic.
Jeongha An +3 more
doaj +1 more source
Optical parametric wideband frequency modulation
APL Photonics, 2022 Various types of photonic applications, such as sensing and communication, require the generation of wideband optical frequency-modulated (FM) signals.
Shota Ishimura +3 more
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