Results 161 to 170 of about 2,434,155 (179)
Some of the next articles are maybe not open access.
Pipelined Architecture for a Radix-2 Fast Walsh–Hadamard–Fourier Transform Algorithm
IEEE Transactions on Circuits and Systems II: Express Briefs, 2015This brief proposes an efficient radix-2 single-path delay commutator (SDC) pipelined architecture to implement the fast Walsh–Hadamard–Fourier transform (FWFT) algorithm. The proposed architecture includes $(\log_{2}N-1)$ SDC stages, which are implemented by merged half-butterfly.
Jinqi Liu +4 more
exaly +2 more sources
Architecture of the fast Walsh-Hadamard and fast Fourier transforms with charge transfer devices
International Journal of Electronics, 1981This paper presents a novel approach for charge transfer device (CTD) implementation of the fast Walsh-Hadamard and fast Fourier transforms. This is achieved by first expressing the Hadamard matrix as a power of a matrix, which allows for efficient CTD implementation. These results are then used in CTD implementation of fast Fourier transforms.
RAO YARLAGADDA, JOHN E. HERSHEY
openaire +1 more source
Adaptive filtering using the fast Walsh-Hadamard transformation
IEEE Transactions on Electromagnetic Compatibility, 1989A fast implementation of the least-mean-square error (LMS) adaptive transversal filter is proposed. The fast Walsh-Hadamard transform technique is adopted in this implementation. This filter is shown to promise a significant reduction in computation over both the conventional time-domain and the frequency-domain LMS adaptive filters. >
openaire +1 more source
A Novel Double Tree Complex Wavelet Transform OFDM Based on Fast Walsh Hadamard Transform
2020 International Conference on Electrical, Communication, and Computer Engineering (ICECCE), 2020In this paper, combining with the fast Walsh Hadamard transform (FWHT) to improve the performance of the double-tree complex wavelet transform (DTCWT) based OFDM technique developed to eliminate the disadvantages of the orthogonal frequency division multiplexing (OFDM) system is suggested.
Kudret Karaerik +7 more
openaire +2 more sources
Fast detection and segmentation of partial image blur based on discrete Walsh–Hadamard transform
Signal Processing: Image Communication, 2019Abstract Image signals can be blurred due to defocus or motion. Blur may be undesirable for image sensing, but may also contain useful information. Therefore, detecting the blurriness of each pixel and segmenting the partial blur regions in natural images are important and yet challenging in the field of machine vision.
Xuewei Wang +3 more
openaire +2 more sources
A soft fast estimation method of PN sequence based on weighting Walsh Hadamard Transform
2013 IEEE Third International Conference on Information Science and Technology (ICIST), 2013Poor error-tolerance and polynomial taps restriction are the main issues of Walsh Hadamard Transform estimation method. This article is devoted to these issues and a novel soft fast PN sequence estimation algorithm based on weighting Walsh Hadamard Transform is proposed.
Kaizhi Huang, Song Chen, Meiyue Yang
openaire +1 more source
2010 INTERNATIONAL CONFERENCE ON COMMUNICATION CONTROL AND COMPUTING TECHNOLOGIES, 2010
A lot of image registration techniques have been developed with great significance for data analysis in medicine, astrophotography, satellite imaging and few other areas. This work proposes a method for medical image registration using Fast Walsh Hadamard transform. This algorithm registers images of the same or different modalities.
D Sasikala, R Neelaveni
exaly +2 more sources
A lot of image registration techniques have been developed with great significance for data analysis in medicine, astrophotography, satellite imaging and few other areas. This work proposes a method for medical image registration using Fast Walsh Hadamard transform. This algorithm registers images of the same or different modalities.
D Sasikala, R Neelaveni
exaly +2 more sources
Parallel-Pipeline Fast Walsh-Hadamard Transform Implementation Using HLS
2021 International Conference on Field-Programmable Technology (ICFPT), 2021A. Manjarrés García +4 more
openaire +2 more sources
Radiotehnika i èlektronika
Based on the analysis of the structures of isomorphic multiplicative groups of extended Galois fields, it is established that any cyclic shift of a pseudo-random Gold sequence can be transformed into a function belonging to the complete set of analogues of Rademacher functions of the corresponding dimension.
S. F. Gorgadze +2 more
openaire +1 more source
Based on the analysis of the structures of isomorphic multiplicative groups of extended Galois fields, it is established that any cyclic shift of a pseudo-random Gold sequence can be transformed into a function belonging to the complete set of analogues of Rademacher functions of the corresponding dimension.
S. F. Gorgadze +2 more
openaire +1 more source
A Secured Communication in Watermarking using Fast Walsh Hadamard Transformation in Image Processing
2022 6th International Conference on Electronics, Communication and Aerospace Technology, 2022K. Premkumar +4 more
openaire +1 more source