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Design and implementation of the Walsh-Hadamard transform on a ternary optical computer.
Applied Optics, 2021Walsh-Hadamard is a commonly used mathematical transformation, a mathematical method for spectrum analysis in the real number domain, which has been widely used in many fields such as digital signal processing, spectral modulation, and image processing ...
Wang Zhehe, Shen Yunfu
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Discrete transforms via the Walsh-Hadamard transform
Signal Processing, 1988Abstract Even-odd transforms (EOTs) such as the discrete cosine (DCT), the discrete sine (DST), the slant (ST) and the discrete Legendre (DLT) transforms are developed from the Walsh-Hadamard transform (WHT). Conversion matrices for all these EOTs are outlined. Computational requirements for implementing these transforms are listed.
S. Venkataraman +3 more
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Real-Time Walsh-Hadamard Transformation
IEEE Transactions on Computers, 1972A technique for obtaining the digital Walsh-Hadamard transform of two-dimensional discrete pictures in real time is presented. A considerable reduction in total time for the transformation of a picture results since the process of scanning and digitizing one picture line overlaps with computations on the previous line. This is accomplished by operating
Nikitas Alexandridis, Allen Klinger
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Cache conscious Walsh-Hadamard transform
2001 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.01CH37221), 2002The Walsh-Hadamard Transform (WHT) is an important algorithm in signal processing because of its simplicity. However, in computing large size WHT, non-unit stride access results in poor cache performance leading to severe degradation in performance. This poor cache performance is also a critical problem in achieving high performance in other large size
N.K. Prasanna, Neungsoo Park
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1975
This chapter is devoted to the study of the Walsh-Hadamard transform (WHT), which is perhaps the most well-known of the nonsinusoidal orthogonal transforms. The WHT has gained prominence in various digital signal processing applications, since it can essentially be computed using additions and subtractions only. Consequently its hardware implementation
N. U. Ahmed, K. R. Rao
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This chapter is devoted to the study of the Walsh-Hadamard transform (WHT), which is perhaps the most well-known of the nonsinusoidal orthogonal transforms. The WHT has gained prominence in various digital signal processing applications, since it can essentially be computed using additions and subtractions only. Consequently its hardware implementation
N. U. Ahmed, K. R. Rao
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On Cyclic Autocorrelation and the Walsh-Hadamard Transform
IEEE Transactions on Electromagnetic Compatibility, 1973It is shown that the complete set of circular shift invariants called the Q-spectrum, of the Walsh-Hadamard transform (WHT) of a periodic sequence is related to the cyclic autocorrelation of the given sequence through the Hadamard matrices. It is also shown that the modified WHT (MWHT) of the cyclic autocorrelation yields the Q-spectrum within some ...
A. L. Abdussattar +2 more
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Iterative detection for Walsh-Hadamard transformed OFDM [PDF]
The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring., 2004 In this paper, an iterative detection method is proposed to reduce the noise enhancement in Walsh-Hadamard transformed (WHT)-OFDM system. The iterative detection starts with conventional detection. The estimation of the received signal at the weakest subcarrier is calculated based on the detection of all data symbols after the hard decision or a ...
Yuan Li +5 more
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NOMA based Walsh Hadamard Transform and User Pairing Strategy
2024 International Conference on Global Aeronautical Engineering and Satellite Technology (GAST)Non-Orthogonal Multiple Access (NOMA) is a promising multiple access technique for the 5G system, which is based on superposition coding (SC) at the transmitter and successive interference cancellations (SIC) at the receiver.
Karim Bouslam +4 more
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2024 IEEE European Solid-State Electronics Research Conference (ESSERC)
We present the first silicon implementation of a Walsh-Hadamard transform based neural network (WHT-NN) processor featuring 2MB MRAM for all-on-chip weight storage, targeting edge devices.
Pierre Abillama +8 more
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We present the first silicon implementation of a Walsh-Hadamard transform based neural network (WHT-NN) processor featuring 2MB MRAM for all-on-chip weight storage, targeting edge devices.
Pierre Abillama +8 more
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International Journal of Remote Sensing
Hyperspectral images (HSIs) have transformed the field of remote sensing by providing researchers with a wealth of information about the Earth’s surface. However, analyzing these images can be an overwhelming task due to the presence of overlapping areas,
G. G. Lakshmi Priya +4 more
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Hyperspectral images (HSIs) have transformed the field of remote sensing by providing researchers with a wealth of information about the Earth’s surface. However, analyzing these images can be an overwhelming task due to the presence of overlapping areas,
G. G. Lakshmi Priya +4 more
semanticscholar +1 more source