Results 251 to 259 of about 40,188 (259)

Sub-Nyquist Bandpass Sampling

2023 25th International Conference on Digital Signal Processing and its Applications (DSPA), 2023
Vladislav Lesnikov, Tatyana Naumovich, Alexander Chastikov, Dmitriy Dubovcev   +3 more
openaire   +1 more source

Speed-enhanced scattering compensation method with sub-Nyquist sampling

Optics Letters
A rapid feedback-based scattering compensation method is particularly important for guiding light precisely within turbid tissues, especially the dynamic tissues. However, the huge number of measurements that come from the underutilization of the signal frequency channel greatly limits the modulation speed.
Zhenghan Li, Jiazhu Zhu, Wei Gong, Ke Si
openaire   +2 more sources

Active spectrum sensing with sequential sub-Nyquist sampling

2017 51st Asilomar Conference on Signals, Systems, and Computers, 2017
In this paper we propose a new receiver architecture for optimum active sequential sensing via sub-Nyquist sampling. The sensing strategy we propose is formulated as a sequential utility optimization problem, where the chosen utility functions strikes the desired balance between exploration and exploitation, typical in most spectrum sensing problem. To
Lorenzo Ferrari, Anna Scaglione
openaire   +1 more source

A Sub-Nyquist, Variable Sampling, High-Frequency Phased Array Beamformer

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2017
A digital receive beamformer implementing a "one sample per pixel" variable sampling technique is described. The sampling method reduces the required sampling rates by a factor of 3, and reduces the data capture rate by a factor of 2, in comparison with the previous systems based on variable sampling.
Christopher A. Samson, Andre Bezanson, Jeremy A. Brown   +2 more
openaire   +2 more sources

The algorithms of sub-Nyquist sampling on TV

Proceedings. IEEE Energy and Information Technologies in the Southeast', 2003
A component color TV signal called the TCM signal is proposed, and an algorithm of subsampling on the TCM signal is described. Results both from computer simulation and hardware display show that the picture quality of this method is satisfactory. A 3-D subsampling algorithm is proposed.
D. Xu, Z.-Y. Quan
openaire   +1 more source

Wideband Spectrum Sensing Based on Sub-Nyquist Sampling

IEEE Transactions on Signal Processing, 2013
In this paper, we consider the problem of locating multiple active spectrum subbands in a wide range of frequency bands. A major challenge associated with such wideband spectrum sensing is that it is either infeasible or too expensive to perform Nyquist sampling on the wideband signal.
Chia-Pang Yen, Yingming Tsai, Xiaodong Wang   +2 more
openaire   +1 more source

Sub-Nyquist Sampling of Bandpass Signals

2024 Systems of Signals Generating and Processing in the Field of on Board Communications
Vladislav Lesnikov, Tatiana Naumovich, Alexander Chastikov, Alexander Metelyov   +3 more
openaire   +1 more source

Frequency Estimation via Sub-Nyquist Unlimited Sampling

ICASSP 2024 - 2024 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
Yuliang Zhu, Ruiming Guo, Peiyu Zhang, Ayush Bhandari   +3 more
openaire   +1 more source

Exploring Sub-Nyquist Sampling for Fine Image Reconstruction

2024 2nd International Conference on Self Sustainable Artificial Intelligence Systems (ICSSAS)
M Nithya, S Satheeshkumar, M Dakshana, K Gunalan, P Anandan, R Saveetha   +5 more
openaire   +1 more source