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Large-scale multi-user multiple-input multiple-output (MIMO) techniques have the potential to bring tremendous improvements for future communication systems. Counter-intuitively, the practical issues of having uncertain channel knowledge,…

信息论 · 计算机科学 2014-07-25 Axel Müller , Abla Kammoun , Emil Björnson , Mérouane Debbah

Wireless communications over fast fading channels are challenging, requiring either frequent channel tracking or complicated signaling schemes such as orthogonal time frequency space (OTFS) modulation. In this paper, we propose…

信息论 · 计算机科学 2020-11-30 Hongyang Zhang , Xiaojing Huang , J. Andrew Zhang

The multiscale complexity of modern problems in computational science and engineering can prohibit the use of traditional numerical methods in multi-dimensional simulations. Therefore, novel algorithms are required in these situations to…

数值分析 · 数学 2021-06-15 Cale Harnish , Luke Dalessandro , Karel Matous , Daniel Livescu

The Poisson-Nernst-Planck (PNP) equations are one of the most effective model for describing electrostatic interactions and diffusion processes in ion solution systems, and have been widely used in the numerical simulations of biological…

数值分析 · 数学 2023-12-19 Yang Liu , Shi Shu , Ying Yang

We present a simple but efficient and robust reconstruction algorithm for Fourier ptychographic microscopy, termed error-laxity Fourier ptychographic iterative engine (Elfpie), that is simultaneously robust to (1) noise signal (including…

复变函数 · 数学 2022-09-30 Shuhe Zhang , Tos T. J. M. Berendschot , Jinhua Zhou

Iterative Filtering (IF) is an alternative technique to the Empirical Mode Decomposition (EMD) algorithm for the decomposition of non-stationary and non-linear signals. Recently in [1] IF has been proved to be convergent for any $L^2$…

数值分析 · 数学 2015-07-28 Antonio Cicone , Haomin Zhou

A new low-order discretization scheme for the identity operator in the magnetic field integral equation (MFIE) is discussed. Its concept is derived from the weak-form representation of combined sources which are discretized with…

数值分析 · 数学 2022-06-27 Jonas Kornprobst , Thomas F. Eibert

In this paper, we construct a combined multiscale finite element method (MsFEM) using the Local Orthogonal Decomposition (LOD) technique to solve the multiscale problems which may have singularities in some special portions of the…

数值分析 · 数学 2022-09-14 Kuokuo Zhang , Weibing Deng , Haijun Wu

Non-stationary signals are ubiquitous in real life. Many techniques have been proposed in the last decades which allow decomposing multi-component signals into simple oscillatory mono-components, like the groundbreaking Empirical Mode…

数值分析 · 数学 2024-01-30 Giovanni Barbarino , Antonio Cicone

An efficient hardware implementation for Simultaneous Localization and Mapping (SLAM) methods is of necessity for mobile autonomous robots with limited computational resources. In this paper, we propose a resource-efficient FPGA…

信号处理 · 电气工程与系统科学 2023-05-31 Keisuke Sugiura , Hiroki Matsutani

The use of quantum computing to accelerate complex optimization problems is a burgeoning research field. This paper applies Quantum Linear System Algorithms (QLSAs) to Newton systems within Interior Point Methods (IPMs) to take advantage of…

最优化与控制 · 数学 2025-07-08 Mohammadhossein Mohammadisiahroudi , Ramin Fakhimi , Zeguan Wu , Tamás Terlaky

Due to the highly non-convex nature of large-scale robust parameter estimation, avoiding poor local minima is challenging in real-world applications where input data is contaminated by a large or unknown fraction of outliers. In this paper,…

计算机视觉与模式识别 · 计算机科学 2020-03-23 Huu Le , Christopher Zach

The Fast Multipole Method (FMM) is an efficient numerical algorithm for computation of long-ranged forces in $N$-body problems within gravitational and electrostatic fields. This method utilizes multipole expansions of the Green's function…

机器学习 · 计算机科学 2025-09-26 Emilio McAllister Fognini , Marta M. Betcke , Ben T. Cox

A high-performance gas kinetic solver using multi-level parallelization is developed to enable pore-scale simulations of rarefied flows in porous media. The Boltzmann model equation is solved by the discrete velocity method with an…

计算物理 · 物理学 2017-12-05 Minh Tuan Ho , Lianhua Zhu , Lei Wu , Peng Wang , Zhaoli Guo , Zhi-Hui Li , Yonghao Zhang

We consider large linear and nonlinear fixed point problems, and solution with proximal algorithms. We show that there is a close connection between two seemingly different types of methods from distinct fields: 1) Proximal iterations for…

数值分析 · 计算机科学 2019-09-05 Dimitri P. Bertsekas

Recently a deterministic method, frequent directions (FD) is proposed to solve the high dimensional low rank approximation problem. It works well in practice, but experiences high computational cost. In this paper, we establish a fast…

数值分析 · 数学 2018-10-09 Dan Teng , Delin Chu

Detecting maximal square submatrices of ones in binary matrices is a fundamental problem with applications in computer vision and pattern recognition. While the standard dynamic programming (DP) solution achieves optimal asymptotic…

数据结构与算法 · 计算机科学 2025-07-22 Swastik Bhandari

The Fast Multipole Method (FMM) provides a highly efficient computational tool for solving constant coefficient partial differential equations (e.g. the Poisson equation) on infinite domains. The solution to such an equation is given as the…

数值分析 · 数学 2012-01-04 A. Gillman , P. G. Martinsson

Multimodal language models (MLLMs) require large parameter capacity to align high-dimensional visual features with linguistic representations, making them computationally heavy and difficult to deploy efficiently. We introduce a progressive…

计算机视觉与模式识别 · 计算机科学 2025-12-10 Jawad Ibn Ahad , Maisha Rahman , Amrijit Biswas , Muhammad Rafsan Kabir , Robin Krambroeckers , Sifat Momen , Nabeel Mohammed , Shafin Rahman

In this paper, we demonstrate that in many NP-complete variants of the stable matching problem, such as the Stable Hypergraph Matching problem, the Stable Multicommodity Flow problem, and the College Admission problem with common quotas, a…

计算机科学与博弈论 · 计算机科学 2025-02-11 Gergely Csáji