Sketched and Truncated Polynomial Krylov Methods: Evaluation of Matrix Functions
Numerical Linear Algebra with Applications, Volume 32, Issue 1, February 2025.ABSTRACT Among randomized numerical linear algebra strategies, so‐called sketching procedures are emerging as effective reduction means to accelerate the computation of Krylov subspace methods for, for example, the solution of linear systems, eigenvalue computations, and the approximation of matrix functions.
Davide Palitta +2 more
wiley +1 more source
Trotterless Simulation of Open Quantum Systems for NISQ Quantum Devices
Advanced Quantum Technologies, Volume 8, Issue 1, January 2025.Open quantum systems exhibit complex dynamics that can be simulated on quantum computers to provide physical insights into their behavior. This work proposes a new method for simulating these systems that reduces the effect of noise and errors on modern quantum hardware.
Colin Burdine, Enrique P. Blair
wiley +1 more source
Winner Update on Walsh-Hadamard Domain for Fast Motion Estimation
, 2006 [[abstract]]Motion estimation (ME) plays an important role in video compression. Block-based ME has been adopted in most video compression standards due to its efficiency.
Shou-Der Wei +2 more
core +1 more source
Spread Spectrum OFDM-IM With Efficient Precoded Matrix and Low Complexity Detector
IEEE AccessThis paper introduces a novel scheme that employs efficient precoded matrices for index modulation orthogonal frequency division multiplexing namely (EP-OFDM-IM).
Ahmed Waheed, Somayeh Mohammady
doaj +1 more source
Multi-Model Switching Based Fault Detection for the Suspension System of Maglev Train
IEEE Access, 2019 In order to satisfy the requirements of on-line monitoring of the suspension system under complex conditions, a fault detection method for maglev train suspension system based on multi-model switching is proposed.
Ping Wang, Zhiqiang Long, Ning Dang
doaj +1 more source
Green communication systems via a wavefront multiplexing technique
Systems Engineering, Volume 28, Issue 1, Page 5-14, January 2025.Abstract A green communication scheme using an orthogonal wavefront (WF) multiplexing (Muxing) scheme spatially combined with orthogonal frequency‐division multiplexing (OFDM) techniques is proposed. It forms a spatial WF OFDM transceiver. The WF Muxing technique serves as the preprocessing and postprocessing method of the WF OFDM transceiver.
Hen‐Geul Yeh, Joe Lee
wiley +1 more source
Faster Walsh-Hadamard Transform and Matrix Multiplication over Finite Fields using Lookup Tables [PDF]
, 2022 We use lookup tables to design faster algorithms for important algebraic problems over finite fields. These faster algorithms, which only use arithmetic operations and lookup table operations, may help to explain the difficulty of determining the ...
Alman, Josh
core
QROP: Quantum Learning‐Based Identification of Retinopathy of Prematurity
IET Quantum Communication, Volume 6, Issue 1, January/December 2025.This work aims to classify normal and ROP‐affected retinal images using a quantum neural network (QNN). The proposed system uses the HVDROPDB (2023) dataset fundus images of preterm infants. The proposed system achieves 97.06% accuracy with the HVDROPDB Neo dataset, 91.18% accuracy with the HVDROPDB RetCam dataset, and 85.29% accuracy when evaluated on
Debashis De +2 more
wiley +1 more source
Quasicyclic dyadic codes in Walsh-Hadamard domain
, 2001 A dyadic code is a code which is closed under all dyadic shifts. A quasicyclic dyadic (QCD) code is one which is both quasicyclic and dyadic. We obtain a simple characterization of all QCD codes over any field of odd characteristic using the Walsh ...
Ho Lee, Moon +3 more
core +2 more sources
Classifiers of Digital Modulation Based on the Algorithm of Fast Walsh-Hadamard Transform and Karhunen-Loeve Transform [PDF]
, 2011 None
Richterova Marie, Mazalek Antonin
openaire +2 more sources