Results 1 to 10 of about 4,627 (154)
Sub-Nyquist artefacts and sampling moiré effects [PDF]
Royal Society Open Science, 2015 Sampling moiré effects are well known in signal processing. They occur when a continuous periodic signal g(x) is sampled using a sampling frequency fs that does not respect the Nyquist condition, and the signal-frequency f folds over and gives a new ...
Isaac Amidror
doaj +6 more sources
Wideband Spectrum Sensing Based on Single-Channel Sub-Nyquist Sampling for Cognitive Radio [PDF]
Sensors, 2018 Spectrum sensing is an important task in cognitive radio. However, currently available Analog-to-Digital Converters (ADC) can hardly satisfy the sampling rate requirement for wideband signals. Even with such an ADC, the cost is extremely high in terms of
Changjian Liu +3 more
doaj +4 more sources
High-Frequency Ultrasound Imaging With Sub-Nyquist Sampling. [PDF]
IEEE Trans Ultrason Ferroelectr Freq Control, 2022 Implementation of a high-frequency ultrasound (HFUS) beamformer is computationally challenging because of its high sampling rate. This article introduces an efficient beamformer with sub-Nyquist sampling (or bandpass sampling) that is suitable for HFUS imaging.
Kang J, Yoon H, Yoon C, Emelianov SY.
europepmc +3 more sources
Sub-Nyquist sampling for short pulses with Gabor frames [PDF]
EURASIP Journal on Wireless Communications and Networking, 2017 For analog signals comprised of several, possibly overlapping, finite duration pulses with unknown shapes and time positions, an efficient sub-Nyquist sampling systems is based on Gabor frames.
Cheng Wang +5 more
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Sparse Recovery Optimization in Wireless Sensor Networks with a Sub-Nyquist Sampling Rate [PDF]
Sensors, 2015 Compressive sensing (CS) is a new technology in digital signal processing capable of high-resolution capture of physical signals from few measurements, which promises impressive improvements in the field of wireless sensor networks (WSNs).
Davide Brunelli, Carlo Caione
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Neural Network-Assisted DPD of Wideband PA Nonlinearity for Sub-Nyquist Sampling Systems [PDF]
SensorsThe design of conventional digital predistortion (DPD) requires an analogue-to-digital converter (ADC) with a sampling frequency that is multiple times the signal bandwidth, which is extremely challenging for sub-Nyquist sampling systems with ...
Mengqiu Liu +6 more
doaj +2 more sources
Joint DOA and frequency estimation with sub-Nyquist sampling [PDF]
Signal Processing, 2019 Abstract Inspired by the concept of sub-Nyquist sampling, in this paper, a receiver architecture of sensor arrays for jointly estimating the frequency and direction-of-arrival (DOA) of the narrowband far-field signals is presented. In particular, our contribution is threefold.
Liang Liu, Jian-Feng Gu, Ping Wei
exaly +3 more sources
Wideband Spectrum Sensing With Sub-Nyquist Sampling in Cognitive Radios [PDF]
IEEE Transactions on Signal Processing, 2012 14 pages, 4 figures and 1 table.
Wei-Yu Chiu +2 more
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Sub-Nyquist Sampling OFDM Radar
IEEE Transactions on Radar Systems, 2023 In this paper, we propose a sub-Nyquist sampling (SNS) orthogonal frequency-division multiplexing (OFDM) radar system capable of reducing the analog-to-digital converter (ADC) sampling rate in OFDM radar without any additional manipulations of its hardware and waveform.
Kawon Han +2 more
openaire +2 more sources
Sub‐Nyquist receiver using sampling frequency and instant offsets
The Journal of Engineering, 2021 With rapid advance in analogue‐to‐digital converters, more analogue‐to‐digital converters in the market can cover multiple Nyquist zones. As a result, the implementation of a sub‐Nyquist receiver designed to cover a bandwidth wider than what is dictated ...
Chi‐Hao Cheng +2 more
doaj +1 more source