Results 91 to 100 of about 978,152 (207)

Walsh-Hadamard Transform and Cryptographic Applications in Bias Computing [PDF]

open access: yes, 2016
Walsh-Hadamard transform is used in a wide variety of scientific and engineering applications, including bent functions and cryptanalytic optimization techniques in cryptography.
Yvo DESMEDT, Yi LU
core   +1 more source

LFSRs and Boolean Masking: An In-depth Security Analysis

open access: yesTransactions on Cryptographic Hardware and Embedded Systems
Masking is a widely adopted countermeasure to protect cryptographic implementations from side-channel attacks. Subsequent research has focused on designing masking schemes and formally proving their security, notably through the development of automated
Anna Guinet   +4 more
doaj   +1 more source

Walsh-Hadamard transform for complex-valued signals

open access: yesElectronics Letters, 1992
The basis functions of the Walsh–Hadamard transform are real-valued whereas most signals in digital signal processing have in-phase and quadrature components. A Walsh–Hadamard power spectrum of a complex-valued sequence is defined, with the aim of obtaining a Fourier-like power spectrum using fewer computations.
B. Arambepola, K.C. Partington
openaire   +1 more source

Universal Joint Maximum Likelihood Frame Synchronization and PLS Decoding for DVB-S2X Systems

open access: yesSignals
Compared to DVB-S2, DVB-S2X features a more intricate signaling structure. These signaling fields are employed not only in standard frames but are also frequently utilized within superframe structures.
Xin-Qi Liao, Yih-Min Chen
doaj   +1 more source

Improving bit error rate in optical wireless OFDM systems through hybrid companding and precoding strategies

open access: yesEURASIP Journal on Wireless Communications and Networking
Visible light communication (VLC) is a promising wireless high-data-rate transmission technology that uses visible light. Optical Orthogonal Frequency Division Multiplexing (OOFDM)-based systems, especially asymmetrically clipped optical OFDM (ACO-OFDM),
Amal Yasser   +2 more
doaj   +1 more source

Detection of Focal and Non-Focal Electroencephalogram Signals Using Fast Walsh-Hadamard Transform and Artificial Neural Network. [PDF]

open access: yesSensors (Basel), 2020
J P   +6 more
europepmc   +1 more source

Image encryption technique using walsh transform and chaotic systems

open access: yesDiscover Electronics
The surge of digital infrastructures demands robust and efficient image encryption schemes to ensure privacy and security. This paper presents a lightweight image encryption scheme that integrates the Walsh Hadamard Transform (WHT) with chaos-driven ...
Adesh Kumar, Jaishree
doaj   +1 more source

Winner Update on Walsh-Hadamard Domain for Fast Motion Estimation

open access: yes, 2006
[[abstract]]Motion estimation (ME) plays an important role in video compression. Block-based ME has been adopted in most video compression standards due to its efficiency.
Shou-Der Wei   +2 more
core   +1 more source

A Fuzzy Logic Based Channel Estimation in Walsh-Hadamard Transform Employed OFDM Systems

open access: yes, 2007
Performances of channel estimation and carrier frequency offset (CFO) tracking algorithms for a Walsh Hadamard Transform employed OFDM systems are investigated for frequency selective Rayleigh fading channels in this paper.
Soysal, B.   +5 more
core   +1 more source

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