Results 191 to 200 of about 25,149 (238)

Highly sensitive broadband photodetector based on PtSe₂ photothermal effect and fiber harmonic Vernier effect. [PDF]

Nanophotonics
Gao Y, Miao Y, Li X, Nie W, Wang Y, Han Z, Wang Y, Wang X, Yang R, Wang R, Yao J.   +10 more
europepmc   +1 more source

Lightweight and Compact Pulse Radar for UAV Platforms for Mid-Air Collision Avoidance. [PDF]

Sensors (Basel)
Sysak D, Byndas A, Karas T, Jaromi G.
europepmc   +1 more source

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A calibration for the modulated wideband converter using sinusoids with unknown phases

2017 Ninth International Conference on Ubiquitous and Future Networks (ICUFN), 2017
Based on the compressed sensing theory, the sub-Nyquist samplers are proposed to acquire the wideband signals. Among them, although the modulated wideband converter (MWC) is theoretically well designed, a calibration is needed for the implementation.
Heung-No Lee, Jeong Min Park, Jehyuk Jang   +2 more
exaly   +3 more sources

A Fine Spectrum Sensing Procedure based on Modulated Wideband Converter

2019 International Conference on Communication and Signal Processing (ICCSP), 2019
For the effective implementation of Cognitive Radio (CR) networks, it is important to perform wideband spectrum sensing rapidly and efficiently. Due to the wide frequency bands involved in spectrum sensing, sub-Nyquist sampling schemes have gained ...
S Chris Prema
exaly   +3 more sources

An average-phase calibration method for the sensing matrix of a Modulated Wideband Converter

Signal Processing
Sujuan Liu
exaly   +3 more sources

Implementation of Mixing Sequence Optimized Modulated Wideband Converter for Ultra-Wideband Frequency Hopping Signals Detection

IEEE Transactions on Aerospace and Electronic Systems, 2020
Frequency hopping (FH) communications are widely used in Satcom systems. The latest FH systems have exceeded 3 GHz with hop rates up to 100 000 hops/s. Traditional spectrum sensing systems hardly monitor such signals.
Ang Li, H. Huan, R. Tao, Qiong Liu
semanticscholar   +2 more sources

Ultra-Wideband Signal Receiver Front-End Based on Modulated Wideband Converter Technology

2025 IEEE 8th International Symposium on Electromagnetic Compatibility (ISEMC)
The increasing signal bandwidth in complex electromagnetic environments poses significant challenges for signal reception and processing. To overcome the bandwidth limitations imposed by the Nyquist sampling theorem, this paper proposes an ultra-wideband
Meiling Chen, Wei Li, Mingliang Xie, Jiahao Zhang, Binbin Su, Lei Zhang   +5 more
semanticscholar   +2 more sources

Wideband Spectrum Sensing using Modulated Wideband Converter by Revised Orthogonal Matching Pursuit

2018 International Conference on Control, Power, Communication and Computing Technologies (ICCPCCT), 2018
Spectrum sensing is a major function of Cognitive radio. Wideband spectrum sensing has been a focal area of research and development for the past few decades. Conventional wideband spectrum sensing techniques used Nyquist sampling rates. The major drawback associated with these techniques is its high computational complexity attached to the required ...
A. P, K. Gopakumar
semanticscholar   +2 more sources

An Optimized Circulant Measurement Matrix Construction Method Used in Modulated Wideband Converter for Wideband Spectrum Sensing

2018 IEEE 87th Vehicular Technology Conference (VTC Spring), 2018
Modulated wideband converter (MWC) is a blind undersampling system for sparse multiband signal. By the available hardware and compressed sensing method, it can realize energy-efficient wideband spectrum sensing under sub-Nyquist sampling rate.
Jian Yang, Min Jia, Xuemai Gu, Qing Guo
semanticscholar   +2 more sources