Results 211 to 220 of about 25,149 (238)
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Modulated wideband converter with non-ideal lowpass filters
2010 IEEE International Conference on Acoustics, Speech and Signal Processing, 2010We investigate the impact of using non-ideal lowpass filters in the modulated wideband (MWC) converter, which is a recent sub-Nyquist sampling system for sparse wideband analog signals. We begin by deriving a perfect reconstruction condition for general lowpass filters, which coincides with the well-known Nyquist inter-symbol interference (ISI ...
Yilun Chen +3 more
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Design of A Miniaturized Ultra-wideband Down Converter Module
2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC), 2020In order to meet the requirements of electromagnetic countermeasure and radar systems, a miniaturized variable frequency module from 8 to 16GHz is proposed. The module adopts the modular design idea, which is implemented by the vertical overlay assembly of two independent modules, which reduces the plane size. Using multi-layer media substrate combined
Zhang Xingwen +4 more
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Theoretical Analysis on Noise Performance of Modulated Wideband Converters for Analog Testing
2020 IEEE 29th Asian Test Symposium (ATS), 2020The Modulated Wideband Converter (MWC) is one of the promising sub-Nyquist sampling architectures for sparse wideband signal sensing, cognitive radio applications and so on. In order to design an MWC-based RF receiver that meets a target RF specification, noise figure (NF) of the MWC has to be well-defined by its design properties. This paper reviews a
Zolboo Byambadorj +5 more
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Wideband spectrum sensing in modulated wideband converter based cognitive radio system
2011 11th International Symposium on Communications & Information Technologies (ISCIT), 2011Wideband spectrum sensing is a fundamental problem in cognitive radio networks. In this paper, a wideband spectrum sensing procedure which consists of four steps, i.e., coarse support recovery, fine binary detection, band edges detection and clustering, for modulated wideband converter (MWC) based cognitive radio system at sub-Nyquist rate is proposed.
Shilian Zheng, Xiaoniu Yang
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A calibration system and perturbation analysis for the Modulated Wideband Converter
IEEE 10th INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING PROCEEDINGS, 2010A calibration system is proposed in this paper for the Modulated Wideband Converter (MWC), which is an efficient sampling system for the sparse multiband signals. The proposed calibration system has the ability to acquire actual measurement matrix and is achievable both in its structure and in its computational complexity.
Laming Chen, Jian Jin, Yuantao Gu
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Parameter Analysis of the Output Filter for Switching Buck Converter in Wideband Envelope Modulator
2021 IEEE International Conference on Consumer Electronics-Taiwan (ICCE-TW), 2021The paper compares the performance of different output filter designs used in high-speed switching power converters in envelope tracking power supplies. A GaN-based driver capable of achieving high switching frequency and high efficiency realizes the switching power converter.
Deng-Fong Lu, Wen-Hao Fan, Chin Hsia
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International Journal of Communication Systems, 2019
In wireless communication systems, physical‐layer security menaces have evolved from jammers. Jammers, due to their furtive nature, make wireless communication systems vulnerable.
Ahmed Moumena
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In wireless communication systems, physical‐layer security menaces have evolved from jammers. Jammers, due to their furtive nature, make wireless communication systems vulnerable.
Ahmed Moumena
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Advanced Video and Signal Based Surveillance, 2018
This paper presents an implementation of the Modulated Wideband Converter (MWC) compressed sensing scheme using Commercial Off-The-Shelf (COTS) low-pass filter (SXLP-36+ from Mini-Circuits®) for spectrum surveillance in order to reconstruct a wideband ...
L. Nguyen +5 more
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This paper presents an implementation of the Modulated Wideband Converter (MWC) compressed sensing scheme using Commercial Off-The-Shelf (COTS) low-pass filter (SXLP-36+ from Mini-Circuits®) for spectrum surveillance in order to reconstruct a wideband ...
L. Nguyen +5 more
semanticscholar +1 more source
Sub-band equalization of modulated wideband converter for improved dynamic range performance
2017 25th Signal Processing and Communications Applications Conference (SIU), 2017In this work, we propose a new method to improve the dynamic range performance of the Modulated Wideband Converter (MWC), which is multi-channel sampling system for digitizing wideband sparse signals below the Nyquist limit without loss of information by using compressive sensing techniques.
Ali Bugra Korucu +3 more
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On a new compressed sensing paradigm in the modulated wideband converter
Eurocon 2013, 2013Concerning sub-Nyquist sampling, this paper continues research on the modulated wideband converter (MWC), which uses compressed sensing (CS) to sample multiband signals with unknown carriers below their Nyquist rate. The minimum sampling rate for blind acquisition of these signals is 2NB, with N the number of bands and B their bandwidth.
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