A generalised Hadamard transform [PDF]
To appear in the proceedings of the 2005 IEEE International Symposium on Information Theory, Adelaide, Australia, September 4-9 ...
K. J. Horadam
core +9 more sources
Hadamard Transform Ion Mobility Spectrometry Based on Matrix Encoding Modulation [PDF]
Ion mobility spectrometry (IMS) has been widely used for the on-site detection of trace chemicals, but continue to suffer from a low duty cycle of ion injection.
Ke Chen, Lingfeng Li, Peng Li
doaj +2 more sources
The Improvement on the Performance of DMD Hadamard Transform Near-Infrared Spectrometer by Double Filter Strategy and a New Hadamard Mask [PDF]
In the Hadamard transform (HT) near-infrared (NIR) spectrometer, there are defects that can create a nonuniform distribution of spectral energy, significantly influencing the absorbance of the whole spectrum, generating stray light, and making the signal-
Zifeng Lu+4 more
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ANALYSIS OF THE BASELINE DRIFT ARTIFACT IN HADAMARD TRANSFORM SEPARATION TECHNIQUES [PDF]
The baseline drift artifact (BDA), namely, the baseline bias between the Hadamard transform (HT) spectrum and the signal averaging (SA) spectrum was unfortunately found in the HT pulsed separation techniques, which makes the HT analytical chemistry face ...
Yan Hong+5 more
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Using Hadamard transform for cryptanalysis of pseudo-random generators in stream ciphers [PDF]
In this work we discuss results obtained from an application of the Hadamard transform to cryptanalysis, andin particular, we determine the probability to decipher different pseudo-random number generators used ascomponents of stream ciphers.
Guillermo Sosa-Gómez+2 more
doaj +3 more sources
Fault identification of ball bearings using Fast Walsh Hadamard Transform, LASSO feature selection, and Random forest classifier [PDF]
To reveal the machinery health condition, time-frequency analysis is an effective tool when signals are non-stationary. To identify bearing faults, numerous techniques have been proposed by various researchers.
Dave V., Thakker H., Vakharia V.
doaj +2 more sources
Some Cryptographic Properties of Functions Based on their 2q-Nega-Hadamard Transform [PDF]
Negabent 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
doaj +2 more sources
Blind Watermarking of Color Medical Images Using Hadamard Transform and Fractional-Order Moments. [PDF]
Abdel-Aziz MM+3 more
europepmc +3 more sources
High-Throughput Multiplexed Infrared Spectroscopy of Ion Mobility-Separated Species Using Hadamard Transform. [PDF]
Yatsyna V+4 more
europepmc +2 more sources
Detection of Focal and Non-Focal Electroencephalogram Signals Using Fast Walsh-Hadamard Transform and Artificial Neural Network. [PDF]
J P+6 more
europepmc +3 more sources