Results 51 to 60 of about 2,434,105 (152)
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
IET Smart Grid, Volume 8, Issue 1, January/December 2025.This paper proposes an integrated model for fault detection, classification, and location in power transmission systems using voltage signals from a single terminal of a series‐compensated line. Simulations show the model achieves 100% accuracy for fault detection, classification and faulty segment identification, and 99.79% accuracy for fault location
Ehsan Akbari, Milad Samady Shadlu
wiley +1 more source
Blind Recognition Algorithm of Convolutional Code via Convolutional Neural Network
International Journal of Intelligent Systems, Volume 2025, Issue 1, 2025.Pointing at the vexed question of blind recognition in the convolutional code class, this paper proposes a convolutional code blind identification method via convolutional neural networks (CNNs). First, this algorithm uses the traditional method to generate different convolutional codes, and the feature extraction algorithm adopts the theorem of Euclid’
Pan Deng +6 more
wiley +1 more source
The Cascading Haar Wavelet Algorithm for Computing the Walsh–Hadamard Transform [PDF]
, 2017 A novel algorithm for computing the Walsh–Hadamard transform (WHT) is proposed, which consists entirely of Haar wavelet transforms. It is proved that the algorithm, referred to as the cascading Haar wavelet algorithm, shares precisely the same serial ...
Andrew Thompson
core +1 more source
Journal of Electrical and Computer Engineering, Volume 2025, Issue 1, 2025.Orthogonal frequency division multiplexing (OFDM) is a widely used modern communications technology due to its resistance to selective frequency fading and efficient use of spectrum. However, the security of OFDM signals remains a source of serious concern, especially in the face of network encryption that aims to disrupt communications or extract ...
Ammar Mohammedali Fadhil +2 more
wiley +1 more source