Results 31 to 40 of about 149,139 (331)
Peak to average power ratio reduction in NC–OFDM systems [PDF]
, 2015 Non contiguous orthogonal frequency division multiplexing (NC-OFDM) is an efficient and adaptable multicarrier modulation scheme to be used in cognitive radio communications.
Ghafoor, Abdul +2 more
core +1 more source
Energy-efficient acceleration of MPEG-4 compression tools [PDF]
, 2007 We propose novel hardware accelerator architectures for the most computationally demanding algorithms of the MPEG-4 video compression standard-motion estimation, binary motion estimation (for shape coding), and the forward/inverse discrete cosine ...
Kinane, Andrew +2 more
core +4 more sources
Speech Signal Compression Algorithm Based on the JPEG Technique
Journal of Intelligent Systems, 2018 The main objective of this paper is to explore parameters usually adopted by the JPEG method and use them in speech signal compression. Speech compression is the technique of encoding the speech signal in some way that allows the same speech parameters ...
Hassan Tariq A. +2 more
doaj +1 more source
A novel light field compression framework with hybrid residue transform mechanism
Electronics Letters, 2022 To meet the challenge of compressing the vast light field data, many prediction‐based algorithms achieve satisfactory results. Although these algorithms remove most redundancy through angular prediction, they rarely develop the suitable de‐correlation ...
Xinpeng Huang +3 more
doaj +1 more source
Combined DWT and DCT Image Compression Using Sliding RLE Technique
مجلة بغداد للعلوم, 2011 A number of compression schemes were put forward to achieve high compression factors with high image quality at a low computational time. In this paper, a combined transform coding scheme is proposed which is based on discrete wavelet (DWT) and discrete ...
Baghdad Science Journal
doaj +1 more source
Lightweight Denoising Autoencoder Design for Noise Removal in Electrocardiography
IEEE Access, 2022 This study proposes two denoising autoencoder models with discrete cosine transform and discrete wavelet transform, to remove electrode motion artifacts in noisy electrocardiography. Initially, the discrete cosine transform and discrete wavelet transform
Ming-Hwa Sheu +5 more
doaj +1 more source
Steerable Discrete Fourier Transform
, 2017 Directional transforms have recently raised a lot of interest thanks to their numerous applications in signal compression and analysis. In this letter, we introduce a generalization of the discrete Fourier transform, called steerable DFT (SDFT).
Fracastoro, Giulia, Magli, Enrico
core +1 more source
Entropy, 2020 The security of information is necessary for the success of any system. So, there is a need to have a robust mechanism to ensure the verification of any person before allowing him to access the stored data.
A. Algarni +5 more
semanticscholar +1 more source
Discrete cosine and sine transforms generalized to honeycomb lattice
, 2018 The discrete cosine and sine transforms are generalized to a triangular fragment of the honeycomb lattice. The honeycomb point sets are constructed by subtracting the root lattice from the weight lattice points of the crystallographic root system $A_2 ...
Hrivnák, Jiří, Motlochová, Lenka
core +1 more source
Advanced Functional Materials, EarlyView.This review highlights how machine learning (ML) algorithms are employed to enhance sensor performance, focusing on gas and physical sensors such as haptic and strain devices. By addressing current bottlenecks and enabling simultaneous improvement of multiple metrics, these approaches pave the way toward next‐generation, real‐world sensor applications.
Kichul Lee +17 more
wiley +1 more source