Results 31 to 40 of about 584 (135)

A New‐Trend Model‐Based to Solve the Peak Power Problems in OFDM Systems

Modelling and Simulation in Engineering, Volume 2008, Issue 1, 2008., 2008
The high peak to average power ration (PAR) levels of orthogonal frequency division multiplexing (OFDM) signals attract the attention of many researchers during the past decade. Existing approaches that attack this PAR issue are abundant, but no systematic framework or comparison between them exists to date.
Ashraf A. Eltholth, Adel R. Mekhail, A. Elshirbini, M. I. Dessouki, A. I. Abdelfattah, Adel Alimi   +5 more
wiley   +1 more source

A Blind Video Copyright Protection Technique in Maximum and Minimum Energy Frames Based on The Fast Walsh Hadamard Transform (FWHT) and Discrete Wavelet Transform (DWT) and Arnold Map

International Journal of Interactive Mobile Technologies (iJIM), 2022
Video copyright protection is the most generally acknowledged method of preventing data piracy. This paper proposes a blind video copyright protection technique based on the Fast Walsh Hadamard Transform (FWHT), Discrete Wavelet Transform (DWT), and Arnold Map. The proposed method chooses only frames with maximum and minimum energy features to host the
Resen, Mohammed S., Laftah, Muna M.
openaire   +2 more sources

Circuit Synthesis from Fibonacci Decision Diagrams

VLSI Design, Volume 14, Issue 1, Page 23-34, 2002., 2002
In decision diagrams (DDs) methods for circuit synthesis, it is possible to directly transfer a DD for a given function f into a network realizing f by the replacement of non‐terminal nodes in the DD with the corresponding circuit modules. The chief bottleneck of mapping a DD into a network is the inherent feature that the depth of the network produced,
Radomir S. Stanković, Jaakko Astola, Milena Stanković, Karen Egiazarian   +3 more
wiley   +1 more source

Algorithm Development for Distributed Memory Multicomputers Using CONLAB

Scientific Programming, Volume 1, Issue 2, Page 185-203, 1992., 1992
CONLAB (CONcurrent LABoratory) is an environment for developing algorithms for parallel computer architectures and for simulating different parallel architectures. A user can experimentally verify and obtain a picture of the real performance of a parallel algorithm executing on a simulated target architecture.
Peter Jacobson, Bo Kågström, Mikael Rännar   +2 more
wiley   +1 more source

Semi-automated bed boundary detection and log alignment using fast Walsh–Hadamard transform

Frontiers in Earth Science
Depth mismatches between well logs acquired in different runs (e.g., electrical wireline logging (EWL) versus logging while drilling (LWD)) impede stratigraphic correlation and bias reservoir property estimation.
Sushil Acharya, Karl Fabian, Anis Yazidi, Kjetil Westeng   +3 more
doaj   +1 more source

Stochastic integration in UMD Banach spaces

, 2007
In this paper we construct a theory of stochastic integration of processes with values in $\mathcal{L}(H,E)$, where $H$ is a separable Hilbert space and $E$ is a UMD Banach space (i.e., a space in which martingale differences are unconditional).
van Neerven, J. M. A. M., Veraar, M. C., Weis, L.   +2 more
core   +1 more source

Macroscopic Elastic Properties of Textured ZrN--AlN Polycrystalline Aggregates: From Ab initio Calculations to Grain-Scale Interactions

, 2014
Despite the fast development of computational materials modelling, theoretical description of macroscopic elastic properties of textured polycrystalline aggregates starting from basic principles remains a challenging task.
Friák, M., Holec, D., Kečkéš, J., Kečkéš, J., Mayrhofer, P., Neugebauer, J., Tasnádi, F., Wagner, P.   +7 more
core   +2 more sources

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, Mahua Nandy Pal, Dipankar Hazra   +2 more
wiley   +1 more source

Yarn irregularity parameterisation using optical sensors [PDF]

, 2009
This paper presents an original system to measure yarn diameter using coherent optical signal processing to eliminate the influence of hairiness over the output signal.
Belsley, M., Cardoso, Paulo, Carvalho, Vítor, Soares, Filomena, Vasconcelos, Rosa   +4 more
core  

Adaptive Uplink Data Compression in Spectrum Crowdsensing Systems [PDF]

, 2021
Understanding spectrum activity is challenging when attempted at scale. The wireless community has recently risen to this challenge in designing spectrum monitoring systems that utilize many low-cost spectrum sensors to gather large volumes of sampled ...
Banerjee, Suman, Bovet, Gerome, Calvo-Palomino, Roberto, Giustiniano, Domenico, Zeng, Yijing   +4 more
core