Results 21 to 30 of about 23,404 (169)
OOK-Assisted Adaptive Equalization and Timing Recovery for PAM4 Demodulation
IEEE Photonics Journal, 2018 In this paper, an OOK-assisted symbol timing recovery and adaptive equalization mechanism is proposed to facilitate the four-level pulse amplitude modulation (PAM4) signal demodulation.
Zhengxuan Li +5 more
doaj +1 more source
IEEE Access, 2020 An on-off keying (OOK) to quadrature phase shift keying (QPSK) format conversion scheme has been demonstrated in this paper. Two-channel OOK signals are converted into one-channel QPSK signal, and accompanied with a multicast function.
Yaya Mao +5 more
doaj +1 more source
Oil palm leaf fibre and its suitability for paper-based products [PDF]
, 2016 Due to the shortage of wood as origin materials for paper-based production, agro-residue materials have been explored in the quest of finding the best alternative fibre.
Algheethi, Adel +7 more
core +2 more sources
Deep Learning for Improving Performance of OOK Modulation Over FSO Turbulent Channels
IEEE Access, 2020 Free space optical (FSO) communication technology has become increasingly advanced with capabilities of high speed, high capacity, and low power consumption.
Laialy Darwesh, Natan S. Kopeika
doaj +1 more source
Ultra-compact lithium niobate microcavity electro-optic modulator beyond 110 GHz
Chip, 2022 A lithium-niobate-on-insulator (LNOI) electro-optic (EO) modulator based on a 2 × 2 FP-cavity was designed and realized with an ultra-compact footprint and an ultra-high bandwidth.
Bing-Cheng Pan +8 more
doaj +1 more source
A Two-Dimensional Signal Space for Intensity-Modulated Channels [PDF]
, 2012 A two-dimensional signal space for intensity- modulated channels is presented. Modulation formats using this signal space are designed to maximize the minimum distance between signal points while satisfying average and peak power constraints. The uncoded,
Agrell, Erik +3 more
core +2 more sources
Advances in Electrical and Electronic Engineering, 2014 This article deals with the construction of a modulator and demodulator for Free-Space Optical (FSO) communication. In FSO optics, the modulated optical signal is propagated in the constantly changing environment (atmosphere).
Ales Vanderka +4 more
doaj +1 more source
Spread spectrum techniques for indoor wireless IR communications [PDF]
, 2003 Multipath dispersion and fluorescent light interference are two major problems in indoor wireless infrared communications systems. Multipath dispersion introduces intersymhol interference at data rates above 10 Mb/s, while fluorescent light induces ...
O'Farrell, T, Wong, KK
core +2 more sources
Applied Sciences, 2021 We experimentally evaluate the high-speed on–off keying (OOK) and four-level pulse amplitude modulation (PAM4) transmitter’s performance in C-band for short-reach optical interconnects.
Oskars Ozolins +7 more
doaj +1 more source
Experimental Demonstration of Staggered CAP Modulation for Low Bandwidth Red-Emitting Polymer-LED based Visible Light Communications [PDF]
, 2019 In this paper we experimentally demonstrate, for the first time, staggered carrier-less amplitude and phase (sCAP) modulation for visible light communication systems based on polymer light-emitting diodes emitting at ~639 nm. The key advantage offered by
Andersson, Mats R. +10 more
core +3 more sources