Results 11 to 20 of about 978,152 (207)
Quasi-cyclic dyadic codes in the Walsh-Hadamard transform domain [PDF]
IEEE Transactions on Information Theory, 2002 Summary: A code is \(s\)-quasi-cyclic (\(s\)-QC) if there is an integer \(s\) such that the cyclic shift of a codeword by \(s\)-positions is also a codeword. For \(s=1\), cyclic codes are obtained. A dyadic code is a code which is closed under all dyadic shifts. An \(s\)-QC dyadic (\(s\)-QCD) code is one which is both \(s\)-QC and dyadic.
Rajan, Sundar B, Lee, Moon Ho
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Parallel Hardware Implementation of Walsh Hadamard Transform [PDF]
Journal of Scientific & Industrial Research, 2022 The Walsh Hadamard Transform is a powerful notion in digital signal processing. This paper explains the construction of parallel hardware architecture using the mathematical concept of Kronecker product based approach to Walsh Hadamard Transform and its ...
Naskar, Mrinal Kanti; Department of ETCE, Jadavpur University, Kolkata 700 032, West Bengal, India +4 more
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New fast Walsh–Hadamard–Hartley transform algorithm [PDF]
, 2023 This paper presents an efficient fast Walsh–Hadamard–Hartley transform (FWHT) algorithm that incorporates the computation of the Walsh-Hadamard transform (WHT) with the discrete Hartley transform (DHT) into an orthogonal, unitary single fast transform ...
Hamood, Mounir Taha +3 more
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In search of the optimal Walsh-Hadamard transform [PDF]
2000 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.00CH37100), 2002 This paper describes an approach to implementing and optimizing fast signal transforms. Algorithms for computing signal transforms are expressed by symbolic expressions, which can be automatically generated and translated into programs. Optimizing an implementation involves searching for the fastest program obtained from one of the possible expressions.
Jeremy Johnson 0001, Markus Püschel
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A Novel Transfer Learning-Based Hybrid EEG-fNIRS Brain-Computer Interface for Intracerebral Hemorrhage Rehabilitation. [PDF]
Adv Sci (Weinh)The study has developed the first clinically validated hybrid EEG‐fNIRS brain‐computer interface fusion framework that systematically overcomes cross‐subject generalization barriers through a novel Wasserstein metric‐driven neural template selection mechanism.
Chen D +18 more
europepmc +2 more sources
Comparison of Image Compressions: Analog Transformations
Proceedings, 2020 A comparison between the four most used transforms, the discrete Fourier transform (DFT), discrete cosine transform (DCT), the Walsh–Hadamard transform (WHT) and the Haar-wavelet transform (DWT), for the transmission of analog images, varying their ...
Jose Balsa
doaj +1 more source
An audio encryption scheme based on Fast Walsh Hadamard Transform and mixed chaotic keystreams [PDF]
Applied Computing and Informatics, 2023 This paper introduces an audio encryption algorithm based on permutation of audio samples using discrete modified Henon map followed by substitution operation with keystream generated from the modified Lorenz-Hyperchaotic system.
F.J. Farsana, V.R. Devi, K. Gopakumar
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Walsh‐Hadamard‐transform‐based SC‐FDMA system using WARP hardware
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
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Low computational complexity variable block size (VBS) partitioning for motion estimation using the Walsh Hadamard transform (WHT) [PDF]
, 2009 Variable Block Size (VBS) based motion estimation has been adapted in state of the art video coding, such as H.264/AVC, VC-1. However, a low complexity H.264/AVC encoder cannot take advantage of VBS due to its power consumption requirements.
Kim, Chanyul +4 more
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Complexity adaptation in H.264/AVC video coder for static cameras [PDF]
, 2009 H.264/AVC uses variable block size motion estimation (VBSME) to improve coding gain. However, its complexity is significant and fixed regardless of the required quality or of the scene characteristics. In this paper, we propose an adaptive complexity
Kim, Chanyul +3 more
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