Results 11 to 20 of about 238,600 (293)
Sending-or-Not-Sending Twin-Field Quantum Key Distribution with a Passive Decoy-State Method
Entropy, 2022 Twin-field quantum key distribution (TF-QKD) has attracted considerable attention because it can exceed the basic rate-distance limit without quantum repeaters.
Ke Xue +3 more
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Capturing the amplitude and phase profile of the vortex beam based on coherent detection
Frontiers in Physics, 2022 In this study, we propose a scheme to capture the amplitude and phase profile of the orbital angular momentum (OAM) beam based on coherent detection. In the scheme, the OAM beam to be measured is interfered with a local plain wave which is prepared at ...
Shengmei Zhao +3 more
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Biorthogonal Fourier transform for multichirp-rate signal detection over dispersive wireless channel
EURASIP Journal on Wireless Communications and Networking, 2018 Biorthogonal Fourier transform (BFT), consistent with the matched signal transform (MST), has been introduced to demodulate the M-ray chirp-rate signal which possesses good orthogonality in the BFT domain.
Lin Zheng +3 more
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RF Spectrum Sensing Based on an Overdamped Nonlinear Oscillator Ring for Cognitive Radios
Sensors, 2016 Existing spectrum-sensing techniques for cognitive radios require an analog-to-digital converter (ADC) to work at high dynamic range and a high sampling rate, resulting in high cost.
Zhi-Ling Tang, Si-Min Li, Li-Juan Yu
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RESEARCH OF SOME PROPERTIES OF ALPHABETS BASED ON MUTUALLY ORTHOGONAL BROADBAND SIGNALS [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2019 The paper presents preliminary studies and analysis of some properties of alphabets built on the basis of the broadband signal symbols. We study the broadband signal alphabets characters and separate broadband signal symbols.
A. Y. Grishentsev +2 more
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Optical signal processing via two-photon absorption in a semiconductor microcavity for the next generation of high-speed optical communications network [PDF]
, 2006 Due to the introduction of new broadband services, individual line data rates are expected to exceed 100 Gb/s in the near future. To operate at these high speeds, new optical signal processing techniques will have to be developed.
Barry, Liam P. +8 more
core +3 more sources
W-band waveguide-packaged InP HEMT reflection grid amplifier [PDF]
, 2006 This letter presents a 79-GHz broadband reflection-type grid amplifier using spatial power combining to combine the power of 64 unit cells. Each unit cell uses a two-stage cascade configuration with InP HEMTs arranged as a differential pair.
Cheung, Chun-Tung +3 more
core +1 more source
Космические аппараты и технологии, 2023 To effectively receive a useful broadband signal, it is necessary to compensate for distortions caused by the complex frequency-dependent coefficient of the receiving and transmitting antenna, multiplicative interference and noise from the heterogeneity ...
A. N. Dementyev +5 more
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Experimental observation of the trapped rainbow [PDF]
, 2009 We report on the first experimental demonstration of the broadband "trapped rainbow" in the visible frequency range using an adiabatically tapered waveguide.
Alexander V. Kildishev +4 more
core +3 more sources
Sensors, 2019 As the size of the radar hardware platform becomes smaller and smaller, the cost becomes lower and lower. The application of indoor radar-based human motion recognition has become a reality, which can be realized in a low-cost device with simple ...
Liubing Jiang +4 more
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