Results 111 to 120 of about 1,105 (131)

Novel Power Efficient Optical OFDM Based on Hartley Transform for Intensity-Modulated Direct-Detection Systems [PDF]

Journal of Lightwave Technology, 2010
We present a novel optical orthogonal frequency division multiplexing (O-OFDM) scheme, suitable for intensity-modulated direct-detection systems, where the modulation/demodulation processing takes advantage of the fast Hartley transform algorithm. Due to
Gabriel Junyent, Raúl Munoz
exaly   +3 more sources

Spectrally Augmented Hartley Transform Precoded Asymmetrically Clipped Optical OFDM for VLC [PDF]

IEEE Photonics Technology Letters, 2018
International audienceIn this letter, layered discrete Hartley transform (DHT)-spread asymmetrically clipped optical-orthogonal frequency division multiplexing (LDHTS-ACO-OFDM) is presented; it uses DHT for multiplexing/demultiplexing and pulse-amplitude
Ali Waqar Azim, Ghislaine Maury
exaly   +2 more sources

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Single Sideband Hartley Amplitude Modulation

Radioelectronics and Communications Systems, 2020
It is developed a method of information transmission with application of amplitude Single Sideband Hartley modulation (SSBH) allowing to increase of radio channel length for optical and fiber optic signal transmission systems where single sideband amplitude modulation (SSB) is used.
A. B. Kokhanov, S. V. Yemelianov, Ya. V. Derevyagin   +2 more
openaire   +2 more sources

Hartley’s Amplitude, Balanced and Single Band Modulations

Radioelectronics and Communications Systems, 2022
A new kind of modulation has been developed representing Hartley’s amplitude modulation (HAM) that differs from the amplitude modulation (AM) by the presence of two orthogonal components of amplitude-modulated signal making it possible to increase the HAM efficiency to 90% as compared to 33% for conventional AM at the maximum value of modulation index ...
openaire   +2 more sources

Single Sideband Hartley Amplitude Modulation

Radioelectronics and Communications Systems, 2021
Kokhanov Aleksandr
exaly  

Hartley’s Amplitude, Balanced and Single Band Modulations

Radioelectronics and Communications Systems, 2023
Kokhanov Aleksandr
exaly  

Orthogonal Frequency Division Multiplexing With Index Modulation Based on Discrete Hartley Transform in Visible Light Communications

IEEE Photonics Journal, 2022
Xu Xian-Ying, Dian-Wu Yue
exaly  

Image encryption based on double random amplitude coding in random Hartley transform domain

Optik, 2010
Shutian Liu, Zhengjun Liu, Muhammad Ashfaq Ahmad   +2 more
exaly  

On Shannon’s Formula and Hartley’s Rule: Beyond the Mathematical Coincidence

Entropy, 2014
JOSÉ CARLOS Magossi, Olivier Rioul
exaly  

A Fast Hartley Transform based novel optical OFDM system for VLC indoor application with constant envelope PAPR reduction technique using frequency modulation

Optics Communications, 2017
Vinay Kumar Singh
exaly