Results 81 to 90 of about 28,052 (308)

Multi - Wavelet Domain Reconstruction of Lost Blocks in Wireless Image Transmission [PDF]

Engineering and Technology Journal, 2005
bstract A fast scheme for multi - wavelet domain interpolation of lost image blocks in wireless image transmission is proposed in this paper . Instead of using common retransmission query protocols , the lost block is reconstructed in the multi - wavelet
Waleed Mahmoud, Mutaz Abdul - Wahab, Atheer Sabri   +2 more
doaj   +1 more source

MIMO discrete wavelet transform for the next generation wireless systems [PDF]

, 2013
NoStudy is presented into the performance of Fast Fourier Transform (FFT) and Discrete Wavelet Transform (DWT) and MIMO-DWT with transmit beamforming. Feedback loop has been used between the equalizer at the transmitter to the receiver which provided the
Rodriguez, Jonathan, Asif, Rameez, Jones, Steven M.R., Ghazaany, Tahereh S, See, Chan H., Noras, James M, Abd-Alhameed, Raed, See, Chan H, Noras, James M., Abd-Alhameed, Raed A, Ghazaany, Tahereh S., Jones, Steven M R   +11 more
core   +1 more source

Discrete wavelet transform decomposition process. [PDF]

, 2020
Discrete wavelet transform decomposition process.
Hamzah Arof (388154), Hazlie Mokhlis (724279), Kanendra Naidu (8378478), Mohd Syukri Ali (8378481), Ab Halim Abu Bakar (8378484), Chia Kwang Tan (8378487)   +5 more
core   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Compatibility of Scalapack with the Discrete Wavelet Transform [PDF]

, 2007
Parallelization of the Discrete Wavelet Transform (DWT) oriented to linear algebra applications, specially the solution of large linear systems, is studied in this paper. We propose that for parallel applications using linear algebra and wavelets, it can be advantageous to use directly the two-dimensional block cyclic distribution (2DBC), used in ...
Liesner Acevedo, Víctor M. García 0001, Antonio M. Vidal   +2 more
openaire   +1 more source

A wavelet-based method for the determination of the relative resolution between remotely sensed images [PDF]

, 2006
Spatial resolution is a key parameter of all remote sensing satellites and platforms. The nominal spatial resolution of satellites is a well-known characteristic because it is directly related to the area in ground that represents a pixel in the detector.
Fors Aldrich, Octavi, V. Pala, R. Arbiol, Núñez de Murga, Jorge, 1955-, M.T. Merino, O. Fors, Arbiol, Román, J. Nunez, Merino Espasa, María Teresa, Otazu Porter, Xavier, Palà, Vicenç, X. Otazu   +11 more
core   +1 more source

Self‐Assembled Inorganic Nanomembrane Tubes: Rolled‐Up Piezoelectrics for Microacoustic Wave‐Based Actuators and Sensors

Advanced Materials, EarlyView.
This study demonstrates a self‐assembly process to generate free‐standing piezoelectric nanomembranes, forming ultracompact microtubular acoustic wave sensors and actuators. The miniaturized 3D piezoelectric platform reported in this work can be applied in telecommunication, energy harvesting, and acoustofluidics. Moreover, the 3D self‐assembly can add
Raphaël C. L‐M. Doineau, Christian N. Saggau, Stefan Baunack, Thomas Gemming, Yara Abdelaal, Robert Weser, Oliver G. Schmidt, Hagen Schmidt, Andreas Winkler, Mariana Medina‐Sánchez   +9 more
wiley   +1 more source

Research of OFDM communication algorithm of low-voltage power line in coal mine

Gong-kuang zidonghua, 2014
In view of problem that traditional OFDM algorithm based on discrete Fourier transform used in underground low-voltage power lines is prone to produce larger ISI and ICI to influence normal receiving of signal, an OFDM communication algorithm based on ...
WEI Shaoliang, LIU Dahai, CHANG Ying, WANG Xuehui, ZHOU Guangping   +4 more
doaj   +1 more source

Introduction of sensor spectral response into image fusion methods. Application to wavelet-based methods [PDF]

, 2005
Usual image fusion methods inject features from a high spatial resolution panchromatic sensor into every low spatial resolution multispectral band trying to preserve spectral signatures and improve spatial resolution to that of the panchromatic sensor ...
Fors Aldrich, Octavi, Núñez de Murga, Jorge, 1955-, Jorge Núñez, María González-audícana, Octavi Fors, Xavier Otazu, Otazu Porter, Xavier, González-Audicana, María   +7 more
core   +1 more source

A Cu‐Based Near‐IR Active MOF with an Ion‐Pair Guest Exhibiting Versatile and Selective Gas‐Solid Reactivity

Advanced Materials, EarlyView.
The new Cu‐containing MOF (Me2NH2)(CuICl2)@[Cu4(INA)4Cl2O]·1.5dmf (3) contains a cation and an anion as guests and shows UV‐near‐mid‐IR absorption and near‐IR emission. MOF 3 shows gas‐solid reactivity in the presence of NH3 and HCOOH to yield two new 3D MOF.
Rajat Saha, Alejandro Cortés‐Villena, Silvia Gómez‐Coca, Alberto Fernández‐Alarcón, Joaquín Calbo, Raquel E. Galian, Enrique Ortí, Eliseo Ruiz, Mónica Giménez‐Marqués, Samia Benmansour, Carlos J. Gómez‐García   +10 more
wiley   +1 more source