Results 141 to 150 of about 2,134,041 (173)
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Chaotic Walsh–Hadamard Transform for Physical Layer Security in OFDM-PON
IEEE Photonics Technology Letters, 2017This letter proposes and experimentally demonstrates an approach to jointly enhance the physical layer security and improve an optical orthogonal frequency division multiplexing (O-OFDM) transmission in passive optical network.
A. Hajomer, Xuelin Yang, Weisheng Hu
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Hadamard Transform-Based Optimized HEVC Video Coding
IEEE transactions on circuits and systems for video technology (Print), 2019The High Efficiency Video Coding (HEVC/H.265) standard achieves great improvement in compression efficiency over the widely used H.264/AVC standard at a cost of much higher complexity.
Minhao Tang +3 more
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A New Fast Algorithm for Discrete Fractional Hadamard Transform
IEEE Transactions on Circuits and Systems Part 1: Regular Papers, 2019This paper proposes a new fast algorithm for calculating the discrete fractional Hadamard transform for data vectors whose size $N$ is a power of two. A direct method for the calculation of the discrete fractional Hadamard transform requires $O(N^{2})$
A. Cariow +3 more
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Secure medical image encryption with Walsh–Hadamard transform and lightweight cryptography algorithm
Medical and Biological Engineering and Computing, 2022Ömer Kasım
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A MEMS-driven Hadamard transform spectrometer
OPTO, 2018We report a miniaturized spectrometer based on Hadamard transformation. The compact spectrometer utilizes a single-pixel photodetector and thus can operate at any wavelengths at relatively low cost.
Y. Du, Guangya Zhou
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International Conference on Control, Automation and Information Sciences, 2018
Multicarrier Non-Orthogonal Multiple Access (MC-NOMA) is a variant of hybrid NOMA, where, Orthogonal Frequency Division Multiple Access (OFDMA) may be employed due to its technical maturity.
I. Baig +6 more
semanticscholar +1 more source
Multicarrier Non-Orthogonal Multiple Access (MC-NOMA) is a variant of hybrid NOMA, where, Orthogonal Frequency Division Multiple Access (OFDMA) may be employed due to its technical maturity.
I. Baig +6 more
semanticscholar +1 more source
A high-efficiency blind watermarking algorithm for double color image using Walsh Hadamard transform
The Visual Computer, 2021Siyu Chen +3 more
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IEEE Communications Letters, 2017
In this letter, a blind video watermarking in phase domain is proposed with conjugate symmetric sequency-complex hadamard transform (CS-SCHT). The watermark is made imperceptible and robust using methods, such as low-amplitude block selection and ...
K. Meenakshi +2 more
semanticscholar +1 more source
In this letter, a blind video watermarking in phase domain is proposed with conjugate symmetric sequency-complex hadamard transform (CS-SCHT). The watermark is made imperceptible and robust using methods, such as low-amplitude block selection and ...
K. Meenakshi +2 more
semanticscholar +1 more source
MONOTONE AND PSEUDO-MONOTONE EQUILIBRIUM PROBLEMS IN HADAMARD SPACES
Journal of the Australian Mathematical Society, 2021Hadi Khatibzadeh, Vahid Mohebbi
exaly