Results 21 to 30 of about 35,538 (312)

Wireless Transmission Method for Large Data Based on Hierarchical Compressed Sensing and Sparse Decomposition

open access: yesSensors, 2020
With the widespread application of wireless sensor networks, large-scale systems with high sampling rates are becoming more and more common. The amount of original data generated by the wireless sensor network is very large, and transmitting all the ...
Youtian Qie, Chuangbo Hao, Ping Song
doaj   +1 more source

Compressed Sensing with nonlinear observations and related non-linear optimisation problems [PDF]

open access: yes, 2013
Non-convex constraints have recently proven a valuable tool in many optimisation problems. In particular sparsity constraints have had a significant impact on sampling theory, where they are used in Compressed Sensing and allow structured signals to be ...
Blumensath, Thomas
core   +1 more source

Compressive Sensing Low-Field MRI Reconstruction with Dual-Tree Wavelet Transform and Wavelet Tree Sparsity

open access: yesChinese Journal of Magnetic Resonance, 2018
Compressed sensing is widely used in accelerated magnetic resonance imaging (MRI) to reduce scan time. With compressed sensing, high-quality MR images could be acquired and reconstructed with only a small amount of K space data.
CHAI Qing-huan   +2 more
doaj   +1 more source

Research on LFM signal parameter estimation method based on Gabor transform to improve MWC system

open access: yesAIP Advances, 2023
The “compressed sensing” theory is the foundation for the compressed sampling system’s design. In addition to the sparse representation and observation matrix, more studies in compressed sensing theory focus on signal reconstruction and recovery.
Shuo Meng, Chen Meng, Cheng Wang
doaj   +1 more source

Multi-signal Compressed Sensing For Polarimetric SAR Tomography [PDF]

open access: yes, 2011
In recent years, three-dimensional imaging by means of SAR tomography has become a field of intensive research. In SAR tomography, the vertical reflectivity function for every azimuth-range pixel is usually recovered by processing data collected using a ...
Aguilera, Esteban Pedro   +6 more
core   +1 more source

Stochastic Parameterization Using Compressed Sensing: Application to the Lorenz-96 Atmospheric Model

open access: yesTellus: Series A, Dynamic Meteorology and Oceanography, 2022
Growing set of optimization and regression techniques, based upon sparse representations of signals, to build models from data sets has received widespread attention recently with the advent of compressed sensing.
A. Mukherjee   +3 more
doaj   +1 more source

Wavelet-Based Compressed Sensing for SAR Tomography of Forested Areas [PDF]

open access: yes, 2012
Synthetic aperture radar (SAR) tomography is a 3-D imaging modality that is commonly tackled by spectral estimation techniques. Thus, the backscattered power along the cross-range direction can be readily obtained by computing the Fourier spectrum of a ...
Nannini, Matteo   +2 more
core   +1 more source

EEG Emotion Recognition Based on Deep Compressed Sensing

open access: yesTaiyuan Ligong Daxue xuebao, 2023
Purposes Deep compressed sensing is the use of deep learning to solve the problems existing in traditional compressed sensing, such as the adaptability of observation matrix to traditional signal compression and the dependency on dictionary by ...
Jinxin FENG   +5 more
doaj   +1 more source

A remark on Compressed Sensing [PDF]

open access: yesMathematical Notes, 2007
A classical problem in signal processing is the recovery problem: One is interested in reconstructing a vector \(u \in \mathbb R^m\) from given linear functionals \((u, \phi_j)\), \(j = 1, 2, \ldots, n\), with some known values \(\phi_1, \ldots, \phi_n \in \mathbb R^m\). In most typical applications, \(n\) is substantially smaller than \(m\).
Kashin, B. S., Temlyakov, V. N.
openaire   +1 more source

Efficient distributed storage strategy based on compressed sensing for space information network

open access: yesInternational Journal of Distributed Sensor Networks, 2016
This article investigates the distributed data storage problem with compressed sensing in the space information network. Since there exists a performance-energy trade-off, most existing strategies focus only on improving the compressed sensing ...
Bo Kong   +4 more
doaj   +1 more source

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