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5 articles for “OOK”
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Performance of NRZ and Manchester DPSK Downstream and Upstream OOK for WDM-PON
Abstract: AbstractA novel data re-modulation scheme with downstream. Differential phase shift keying (DPSK) signals and on-off keying (OOK) upstream signal modulation format is proposed for wavelength-division multiplexing (WDM) – passive optical networks (PON) in the letter. A simulation on 5-Gb/s downstream optical DPSK signal and 5 Gb/s upstream optical OOK signal. 5Gb/S on DPSK OOK all are successfully demonstrated over 20-km single mode fiber without chromatic dispersion compensation.Keywords: Differential phase-shift keying …
Published in Trends in Opto-electro & Optical Communication · Vol. 7, Issue 1, 2017 · pp. 6–9 Read article
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Comparative Analysis of OOK and M-ary PPM Modulation Technique over Exponentiated Weibull Distribution under Different Turbulence Regime
Abstract: In this paper, the Exponentiated Weibull distribution has been investigated for different turbulence regime considering the aperture averaging at the receiver. The comparative analysis of modulation technique (on-off keying and pulse position modulation) has been presented for different aperture size under weak, moderate, and strong turbulence regime. The closed form of expression of bit error rate (BER) has been numerically derived from the cumulative distribution function (CDF) using the Gauss- …
Published in Trends in Opto-electro & Optical Communication · Vol. 11, Issue 1, 2021 · pp. 7–12 Read article
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Feasibility Analysis of Advanced Modulation Techniques for FSO in Different Weather Conditions
Abstract: AbstractIn recent times, the ever increasing demand of higher bandwidth and more data rate had led researchers to explore new dimensions in wireless technology. One of the most promising fields is that of free-space optics (FSO). Light is used to carry information through space with the physical medium being the air. This paper investigates the effect on Q-factor and power loss for various advanced modulation schemes under different weather conditions. …
Published in Trends in Opto-electro & Optical Communication · Vol. 6, Issue 2, 2016 · pp. 1–7 Read article
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Designing and Implementation of Under-Water Optical Wireless Communication System
Abstract: In modern digital communication field Optical Wireless Communication is playing key role to heighten expectation of the end user. To communicate these end users through communication channel with reliable data is always challenging and unpredictable. Now a day most thrust area is wireless optical communication which is used to establish connection among various end user nodes. All the constituents like fog, dust, smoke, and rain and wind turbulence will have …
Published in Recent Trends in Fluid Mechanics · Vol. 11, Issue 2, 2024 · pp. 10–14 Read article
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Optimized Receivers for Underwater Visible Light Communication
Abstract: For uses like ocean exploration, environmental monitoring, and underwater data transfer, wireless communication under water is crucial. Conventional acoustic and radio frequency communication methods suffer from low bandwidth, high latency, and severe signal attenuation in underwater environments. With its high data rate and low propagation delay, Visible Light Communication (VLC) provides a promising alternative. In this work, an underwater VLC system is implemented using Light Emitting Diodes (LEDs) with intensity …
Published in Trends in Opto-electro & Optical Communication · Vol. 16, Issue 1, 2026 · pp. 22–33 Read article