Results 1 to 10 of about 10,375 (260)
Inertial proximal alternating minimization for nonconvex and nonsmooth problems [PDF]
Journal of Inequalities and Applications, 2017 In this paper, we study the minimization problem of the type L ( x , y ) = f ( x ) + R ( x , y ) + g ( y ) $L(x,y)=f(x)+R(x,y)+g(y)$ , where f and g are both nonconvex nonsmooth functions, and R is a smooth function we can choose.
Yaxuan Zhang, Songnian He
doaj +2 more sources
EURO Journal on Computational Optimization, 2016 We analyze the proximal alternating linearized minimization algorithm (PALM) for solving non-smooth convex minimization problems where the objective function is a sum of a smooth convex function and block separable non-smooth extended real-valued convex ...
Marc Teboulle, Ron Shefi
exaly +3 more sources
NON-CONVEX HYBRID TOTAL VARIATION FOR RESTORING MEDICAL IMAGE CORRUPTED BY POISSON NOISE [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023 In this work, we proposed the hybrid non-convex regularizers for Poisson noise removal on medical images. The model is built by a combination of non-convex total variation and non-convex fractional total variation.
T. T. T. Tran +5 more
doaj +1 more source
Hybrid Precoding Algorithm for High Spectral Efficiency in mm-Wave MIMO Systems
Guangtongxin yanjiu, 2022 In mm-wave massive Multiple Input Multiple Output (MIMO) systems, in order to further improve the spectral efficiency of hybrid precoding in fully connected structure, an Alternate Minimization based on Gradient Descent (GD-AltMin) hybrid precoding ...
Wei ZHOU, Qiu-yan YANG
doaj +3 more sources
IEEE Access, 2022 Millimeter-wave (mm-wave) communication is the spectral frontier to meet the anticipated significant volume of high data traffic processing in next-generation systems.
Adeb Salh +7 more
doaj +1 more source
Analysis of Wide-Frequency Dense Signals Based on Fast Minimization Algorithm
Energies, 2022 To improve the detection speed for wide-frequency dense signals (WFDSs), a fast minimization algorithm (FMA) was proposed in this study. Firstly, this study modeled the WFDSs and performed a Taylor-series expansion of the sampled model.
Zehui Yuan +4 more
doaj +1 more source
Hybrid Precoding for Millimeter Wave MIMO: Trace Optimization Approach
IEEE Access, 2022 The hybrid precoding problem in point-to-point millimeter wave (mmWave) multiple input multiple output (MIMO) for narrowband channel has been established as a Frobenius norm minimization problem.
Prabhat Raj Gautam, Li Zhang
doaj +1 more source
Low-Complexity Self-Interference Cancellation for Multiple Access Full Duplex Systems
Sensors, 2022 Self-interference occurs when there is electromagnetic coupling between the transmission and reception of the same node; thus, degrading the RX sensitivity to incoming signals.
Shachar Shayovitz +2 more
doaj +1 more source
Fractal and Fractional, 2023 Multiplicative noise removal is a quite challenging problem in image denoising. In recent years, hyper-Laplacian prior information has been successfully introduced in the image denoising problem and significant denoising effects have been achieved.
Jianguang Zhu +3 more
doaj +1 more source
Constrained Total Generalized p-Variation Minimization for Few-View X-Ray Computed Tomography Image Reconstruction. [PDF]
PLoS ONE, 2016 Total generalized variation (TGV)-based computed tomography (CT) image reconstruction, which utilizes high-order image derivatives, is superior to total variation-based methods in terms of the preservation of edge information and the suppression of ...
Hanming Zhang +5 more
doaj +1 more source