Results 21 to 30 of about 2,608 (229)
Performance Evaluation of NRZ-OOK and Carrier-Less Amplitude Phase Modulation in Li-Fi Environment [PDF]
, 2022 Light Fidelity (Li-Fi) is a wireless technology that utilizes light emitting diodes to convey data. Li-Fi has emerged as a promising alternative to radio frequency communication technology in recent years.
Zaiton, A M +4 more
core +1 more source
Photonics, 2022 Directly modulated 850-nm multimode vertical-cavity surface-emitting lasers (MM-VCSELs) with different oxide apertures and transmission microstrip lengths are compared on the transmission performance of the non-return-to-zero on-off keying (NRZ-OOK) and ...
Jui-Hung Weng +7 more
doaj +1 more source
CMOS OOK modulator with fast envelope transient
Electronics Letters, 2019 This Letter presents a 2 GHz 130 nm CMOS absorptive on–off keying (OOK) modulator. The loop matching technique is proposed to realise wideband matching such that fast modulation envelope transient can be achieved. The parallel LC network is adopted to reduce the impedance variation between ...
S.‐E. Chang, Y.‐J.E. Chen
openaire +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
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
Recent developments in indoor optical wireless systems [PDF]
, 2008 An overview of the developments in optical wireless systems viewed from the traditional communications viewpoint of transmitter, channel and receiver is presented.
Leeson, Mark S. +3 more
core +1 more source
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
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
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