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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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Wideband Spectrum Sensing using Modulated Wideband Converter by Revised Orthogonal Matching Pursuit
2018 International Conference on Control, Power, Communication and Computing Technologies (ICCPCCT), 2018Spectrum 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 ...
Aswathy G P, K Gopakumar
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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. Modulated wideband converter (MWC) is an emerging compressive sampling structure applied to sample multiband signals.
Ang Li, Hao Huan, Ran Tao, Qiong Liu
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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. Modulated wideband converter (MWC) is an emerging compressive sampling structure applied to sample multiband signals.
Ang Li, Hao Huan, Ran Tao, Qiong Liu
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A study on mixing sequences in modulated wideband converters
2016 IEEE Global Conference on Signal and Information Processing (GlobalSIP), 2016In this paper, we study mixing sequences of modulated wideband converters (MWC). The MWC is a sub-Nyquist sampling system which mixes an input analog signal by multiple numbers of fast mixing sequences in parallel. When the mixing sequences are random cyclic shifts of a base sequence for a memory efficiency, the system turns into random partial Fourier
Jehyuk Jang, Nam Yul Yu, Heung-No Lee
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Compressed sampling signal detection method based on modulated wideband converter
2016 IEEE Advanced Information Management, Communicates, Electronic and Automation Control Conference (IMCEC), 2016In order to deal with the problem when the bandwidth of the passive radars and wideband digital receivers are getting bigger and bigger, causing that the traditional signal detection methods need a high sampling rate and a large number of sampling points.
null Tao Chen +2 more
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Wideband Photonic Microwave SSB Up-Converter and I/Q Modulator
Journal of Lightwave Technology, 2017A wideband photonic microwave single sideband (SSB) up-converter and an in-phase/quadrature (I/Q) modulator are proposed and experimentally demonstrated. The intermediate frequency (IF) and local oscillator (LO) signals are applied to the submodulators of a dual-parallel Mach–Zehnder modulator (DPMZM) for frequency up-conversion, and the phase of the ...
Yongsheng Gao +5 more
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A Fine Spectrum Sensing Procedure based on Modulated Wideband Converter
2019 International Conference on Communication and Signal Processing (ICCSP), 2019For 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 importance.
Sneha Gem Mathew, S. Chris Prema
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2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS), 2014
Modulated wideband converter (MWC) based sub-Nyquist sampling can be used for wideband spectrum sensing in cognitive radio networks. In this paper, a method is proposed for detecting whether the reconstruction process is unsuccessful due to non-sparse spectrum in MWC based wideband spectrum sensing to avoid causing harmful interference to primary users.
Shilian Zheng, Xiaoniu Yang
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Modulated wideband converter (MWC) based sub-Nyquist sampling can be used for wideband spectrum sensing in cognitive radio networks. In this paper, a method is proposed for detecting whether the reconstruction process is unsuccessful due to non-sparse spectrum in MWC based wideband spectrum sensing to avoid causing harmful interference to primary users.
Shilian Zheng, Xiaoniu Yang
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Analysis and Signal Recovery of Modulated Wideband Converter with Gain Mismatch
Applied Mechanics and Materials, 2013Recently, a sub-Nyquist sampling system, called as Modulated Wideband Converter (MWC), for sparse analog signals is proposed in [1]. In this paper, the gain mismatch, i.e. the gain variation of the mixers, the low pass filters and the low-date rate ADCs, in the MWC is, firstly, analyzed.
You Hua Wang, Jian Qiu Zhang
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