Nearly Optimal Deterministic Algorithm for Sparse Walsh-Hadamard Transform [PDF]
Proceedings of the Twenty-Seventh Annual ACM-SIAM Symposium on Discrete Algorithms, 2015 For every fixed constant $\alpha > 0$, we design an algorithm for computing the $k$-sparse Walsh-Hadamard transform of an $N$-dimensional vector $x \in \mathbb{R}^N$ in time $k^{1+\alpha} (\log N)^{O(1)}$.
Cheraghchi, Mahdi, Indyk, Piotr
core +14 more sources
Detection of Focal and Non-Focal Electroencephalogram Signals Using Fast Walsh-Hadamard Transform and Artificial Neural Network [PDF]
Sensors, 2020 The discrimination of non-focal class (NFC) and focal class (FC), is vital in localizing the epileptogenic zone (EZ) during neurosurgery. In the conventional diagnosis method, the neurologist has to visually examine the long hour electroencephalogram ...
Prasanna J. +6 more
doaj +4 more sources
The Sufficient Condition for Ensuring the Reliability of Perception of the Steganographic Message in the Walsh-Hadamard Transform Domain [PDF]
Problems of the Regional Energetics, 2022 In view of the high compatibility of the Walsh-Hadamard transform to the architecture of mod-ern computing facilities, it is sensible to use it in methods of steganography and steganalysis.
Kobozeva A.A., Sokolov A.V.
doaj +2 more sources
A Novel GFDM Waveform Design Based on Cascaded WHT-LWT Transform for the Beyond 5G Wireless Communications [PDF]
Sensors, 2021 In this paper, a new WHT-LWT-GFDM waveform obtained by combining Walsh–Hadamard Transform (WHT), Lifting Wavelet Transform (LWT), and Generalized Frequency Division Multiplexing (GFDM) is presented for use in next-generation wireless communication ...
Meryem Maraş +4 more
doaj +2 more sources
Enhancing Tool Wear Prediction Accuracy Using Walsh–Hadamard Transform, DCGAN and Dragonfly Algorithm-Based Feature Selection [PDF]
Sensors, 2023 Tool wear is an important concern in the manufacturing sector that leads to quality loss, lower productivity, and increased downtime. In recent years, there has been a rise in the popularity of implementing TCM systems using various signal processing ...
Milind Shah +5 more
doaj +2 more sources
Design and Implementation of Sequency-Ordered Fast Walsh-Hadamard Transform (FWHT) in WCDMA
Tikrit Journal of Engineering Sciences, 2013 This paper presents the implementation of the Fast Walsh Hadamard Transform (FWHT) in sequence ordered method, in order to minimize the interference due to two users trying to transmit at the same time, and an attempt has made to simulate them.
Safaa M. Z. Al-Ubaidi
doaj +3 more sources
Practical tera-scale Walsh-Hadamard Transform [PDF]
2016 Future Technologies Conference (FTC), 2016 to appear in proceedings of Future Technologies Conference - FTC 2016, San Francisco, 6 - 7 Dec ...
Yi Lu
openaire +4 more sources
Walsh‐Hadamard‐transform‐based SC‐FDMA system using WARP hardware [PDF]
ETRI Journal, 2021 Single‐carrier frequency division multiple access (SC‐FDMA) is currently being used in long‐term evolution uplink communications owing to its low peak‐to‐average power ratio (PAPR). This study proposes a new transceiver design for an SC‐FDMA system based
Shri Ramtej Kondamuri, Sundru Anuradha
doaj +2 more sources
Walsh–Hadamard Transform Based Non-Orthogonal Multiple Access (NOMA) and Interference Rejection Combining in Next-Generation HetNets [PDF]
Mathematics, 2021 In heterogeneous networks (HetNets), non-orthogonal multiple access (NOMA) has recently been proposed for hybrid-access small-cells, promising a manifold network capacity compared to OMA.
M. Rehan Usman +6 more
doaj +2 more sources
A novel blockchain-watermarking mechanism utilizing interplanetary file system and fast walsh hadamard transform [PDF]
iScienceSummary: This article proposes a new digital watermarking mechanism based on the Ethereum blockchain, Smart Contract, and Interplanetary File System (IPFS), with an enhanced Fast Walsh Hadamard Transform (FWHT) algorithm for watermark embedding and ...
Tong Liu +4 more
doaj +2 more sources