Results 21 to 30 of about 978,152 (207)
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
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IMAGE COMPRESSION BY USING WALSH AND FRAMELET TRANSFORM
Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ, 2019 In this paper, Framelet and Walsh transform are proposed for transformation, and then using arithmetic coding for compress an image. The goal is to achieve higher compression ratio by applying two levels Framelet transform (FLT), and then apply 2D Walsh ...
Nora H. Sultan
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Walsh–Hadamard Kernel Feature-Based Image Compression Using DCT with Bi-Level Quantization
Computers, 2022 To meet the high bit rate requirements in many multimedia applications, a lossy image compression algorithm based on Walsh–Hadamard kernel-based feature extraction, discrete cosine transform (DCT), and bi-level quantization is proposed in this paper. The
Dibyalekha Nayak +3 more
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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 ...
openaire +2 more sources
Robust Steganographic Method with Code-Controlled Information Embedding [PDF]
Problems of the Regional Energetics, 2021 In view of the fact that most images are compressed when transmitted through telecommunica-tion systems and telecommunication systems in the energetics, from the point of view of the practical use of steganographic algorithms in real information security
Kobozeva A.A. , Sokolov A.V
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Optical full Hadamard matrix multiplexing and noise effects [PDF]
, 2009 Hadamard multiplexing provides a considerable SNR boost over additive random noise but Poisson noise such as photon noise reduces the boost. We develop the theory for full H-matrix Hadamard transform imaging under additive and Poisson noise effects.
Streeter, Lee +4 more
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Some Cryptographic Properties of Functions Based on their 2q-Nega-Hadamard Transform [PDF]
International Journal of Mathematical, Engineering and Management SciencesNegabent functions play a vital role in the field of cryptography and coding theory for designing secure cryptosystems. In this article, we investigate the various properties of 2q-nega-Hadamard transform (2q-NHT) of the functions from Z_q^n to Z_2q with
Deep Singh +4 more
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Cache miss analysis of WHT algorithms [PDF]
Discrete Mathematics & Theoretical Computer Science, 2005 On modern computers memory access patterns and cache utilization are as important, if not more important, than operation count in obtaining high-performance implementations of algorithms.
Mihai Furis +2 more
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Visible Light Communication: An Investigation of LED Non-Linearity Effects on VLC Utilising C-OFDM
Photonics, 2022 The electro-optic output of light-emitting diodes commonly used in visible light communication systems is generally nonlinear in nature. It is particularly problematic when using advanced modulation formats, such as orthogonal frequency-division ...
Jummah Abdulwali, Said Boussakta
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A Characterization of Generalized Boolean Functions Employed in CDMA Communications [PDF]
International Journal of Mathematical, Engineering and Management SciencesIn design of secure cryptosystems and CDMA communications, the negabent functions play a significant role. The generalized Boolean functions have been extensively studied by Schmidt and established several important results in this setup.
Deep Singh +3 more
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