Results 201 to 210 of about 25,149 (238)
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Compressed sensing in array signal processing based on modulated wideband converter
2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS), 2014Nyquist theory is a serious obstacle to the wideband signal processing, which has been broken by compressed sensing theory. Modulated wideband converter can sample wideband signals with subNyquist frequency. In array signal processing, to bring down the sampling rate for the wideband signal is especially an essential issue.
Yi Zhou-wei +3 more
exaly +2 more sources
Circuits, Systems, and Signal Processing, 2023
Sujuan Liu, Xiaoyao Lyu, Chengkai Cui
semanticscholar +2 more sources
Sujuan Liu, Xiaoyao Lyu, Chengkai Cui
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A Mixer Front End for a Four-Channel Modulated Wideband Converter With 62-dB Blocker Rejection
IEEE Journal of Solid-State Circuits, 2017Boris Murmann +2 more
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IEEE Transactions on Circuits and Systems - II - Express Briefs, 2022
In modulated wideband converter (MWC), all signals are aliased and sampled indiscriminately, which reduces the reconstruction accuracy of target signal.
Shi Wen +3 more
semanticscholar +1 more source
In modulated wideband converter (MWC), all signals are aliased and sampled indiscriminately, which reduces the reconstruction accuracy of target signal.
Shi Wen +3 more
semanticscholar +1 more source
Design of A Modulated Wideband Converter for Low-Speed Sampling of Sparse Analog Signals
IEEE International Conference on Solid-State and Integrated Circuit Technology, 2022The modulated wideband converter (MWC) is a sampling system that realizes the sub-Nyquist sampling rate by using the compressed sensing (CS) theory. This paper presents an analog front-end circuit for a modulated wideband converter, which consists of ...
Sujuan Liu, Zihao Wei, Xiaoyao Lyu
semanticscholar +1 more source
IEEE International Conference on Electronic Measurement & Instruments, 2021
This paper considers the blind calibration and signal recovery of Modulated Wideband Converter system. The amplitude and phase errors of each channel are modeled as an unknown multiplicative diagonal matrix, and a blind calibration algorithm which only ...
Jingchao Zhang +3 more
semanticscholar +1 more source
This paper considers the blind calibration and signal recovery of Modulated Wideband Converter system. The amplitude and phase errors of each channel are modeled as an unknown multiplicative diagonal matrix, and a blind calibration algorithm which only ...
Jingchao Zhang +3 more
semanticscholar +1 more source
Online calibration of Modulated Wideband Converter
2016 24th Signal Processing and Communication Application Conference (SIU), 2016In this work, we propose a new method for online calibration of recently proposed Modulated Wideband Converter (MWC), which digitizes wideband sparse signals below the Nyquist limit without loss of information by using compressive sensing techniques.
Yasar Kemal Alp +4 more
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Hardware calibration of the modulated wideband converter
2014 IEEE Global Communications Conference, 2014In the context of Cognitive Radio (CR), opportunistic transmissions can exploit temporarily vacant spectral bands. Efficient and reliable spectrum sensing is key in the CR process. CR receivers traditionally deal with wideband signals with high Nyquist rates and low Signal to Noise Ratios (SNRs).
Etgar Israeli +6 more
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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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