Results 41 to 50 of about 5,165 (219)
Fast Walsh–Hadamard–Fourier Transform Algorithm
IEEE Transactions on Signal Processing, 2011 An efficient fast Walsh-Hadamard-Fourier transform algorithm which combines the calculation of the Walsh-Hadamard transform (WHT) and the discrete Fourier transform (DFT) is introduced. This can be used in Walsh-Hadamard precoded orthogonal frequency division multiplexing systems (WHT-OFDM) to increase speed and reduce the implementation cost.
Boussakta S, Monir H
openaire +2 more sources
Efficient quantum amplitude encoding of polynomial functions [PDF]
QuantumLoading functions into quantum computers represents an essential step in several quantum algorithms, such as quantum partial differential equation solvers.
Javier Gonzalez-Conde +3 more
doaj +1 more source
Quantum Computing and a Unified Approach to Fast Unitary Transforms
, 2002 A quantum computer directly manipulates information stored in the state of quantum mechanical systems. The available operations have many attractive features but also underly severe restrictions, which complicate the design of quantum algorithms.
Agaian, Sos S., Klappenecker, Andreas
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A New Algorithm for Solving Ring-LPN with a Reducible Polynomial [PDF]
, 2014 The LPN (Learning Parity with Noise) problem has recently proved to be of great importance in cryptology. A special and very useful case is the RING-LPN problem, which typically provides improved efficiency in the constructed cryptographic primitive.
Guo, Qian +2 more
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Hardware structure for Walsh-Hadamard transforms
Electronics Letters, 1998 An efficient hardware structure is reported for the Walsh-Hadamard transform. Based on the radix-2 algorithm, the structure can be implemented with shift registers and controllable adder/subtracters for high processing throughput. Such an implementation is particularly suited to applications that require real-time operations and interface directly with
null Bi, B.G. Evans
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PAPR reduction of optical OFDM signals in visible light communications
ICT Express, 2019 Orthogonal frequency division multiplexing (OFDM) is extensively used in optical communications to achieve high rate transmission. In this paper, Vandermonde like matrix (VLM) pre-coding approach is offered to reduce the high peak-to-average power ratio (
Abbas Ali Sharifi
doaj +1 more source
Realization of generalized quantum searching using nuclear magnetic resonance
, 2001 According to the theoretical results, the quantum searching algorithm can be generalized by replacing the Walsh-Hadamard(W-H) transform by almost any quantum mechanical operation.
C. Zalka +13 more
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Designing superior crosses in cassava using genomic mating to boost yield and genetic diversity
Crop Science, Volume 65, Issue 6, November/December 2025.Abstract Identifying superior cassava (Manihot esculenta Crantz) crosses through phenotypic evaluations is costly and inefficient due to cassava's long breeding cycles and low flowering rates. In this study, we applied genomic mate selection and optimum contribution selection using additive, dominance, and directional dominance models to enhance ...
Paulo Henrique Ramos Guimarães +4 more
wiley +1 more source
IEEE Access, 2022 Some conventional transforms such as Discrete Walsh-Hadamard Transform (DWHT) and Discrete Cosine Transform (DCT) have been widely used as feature extractors in image processing but rarely applied in neural networks.
Joonhyun Jeong +3 more
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Digital Image Watermarking [PDF]
, 2012 V této práci jsou popsány základy digitálního vodoznačení obrazů a metody porovnání změny obrazu jeho vodoznačením. Jsou navrženy metody založené na využití diskrétní vlnkové traansformace, diskrétní kosinové transformace a Walsh-Hadamardovy transformace.
Vitner, Petr
core