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6 results on '"Jhon James Granada Torres"'

1. KNN-based Demodulation in gridless Nyquist-WDM Systems affected by Interchannel Interference

Author

Neil Guerrero González, Alejandro Escobar Pérez, and Jhon James Granada Torres

Subjects
Optical fiber, Interference (communication), law, Computer science, Digital demodulation, Electronic engineering, Bit error rate, Demodulation, Nyquist wdm, Quadrature amplitude modulation, k-nearest neighbors algorithm, law.invention
Abstract

We propose a digital demodulation technique based on KNN algorithm for 16-QAM signals affected by interchannel interference in gridless scenarios. We experimentally verified this technique in a 3×16-Gbaud 16QAM Nyquist-WDM system.

Published
2019

2. Overlapping Estimation based on DBSCAN Algorithm in Nyquist-WDM Systems

Author

Neil Guerrero González and Jhon James Granada Torres

Subjects
Erbium doped fiber amplifier, DBSCAN, Signal processing, Amplified spontaneous emission, Optical signal to noise ratio, Computer science, Nyquist wdm, Algorithm, Quadrature amplitude modulation
Abstract

We propose a method to estimate the percentage of overlapping between optical channels based on DBSCAN algorithm applied to received symbols. We experimentally verified this method in a 3×16-Gbaud 16QAM Nyquist-WDM system.

Published
2019

3. Clustering in Short Time Windows for Nonsymmetrical Demodulation in 16QAM Overlapped WDM Channels

Author

Siddharth Varughese, Ana Maria Cardenas Soto, Stephen E. Ralph, Neil Guerrero González, and Jhon James Granada Torres

Subjects
Engineering, business.industry, Electrical engineering, Data_CODINGANDINFORMATIONTHEORY, Nonlinear system, Time windows, Wavelength-division multiplexing, Bit error rate, Electronic engineering, Nyquist–Shannon sampling theorem, Demodulation, ComputerSystemsOrganization_SPECIAL-PURPOSEANDAPPLICATION-BASEDSYSTEMS, business, Cluster analysis, Quadrature amplitude modulation
Abstract

We propose an adaptive nonsymmetrical demodulation technique enabling the mitigation of time-varying distortions. The approach is experimentally verified in multichannel coherent 16QAM Nyquist links, with nonlinear effects and overlapped channels.

Published
2017

5. Inter-Channel Interference Characterization in a Nyquist-WDM gridless scenario with Nonlinear Impairments Compensation by using Digital Backpropagation

Author

Neil Guerrero González, Juan Pablo Serna Lopez, Jhon James Granada Torres, and Ana M. Cardenas

Subjects
Signal processing, Interference (communication), Computer science, Bit error rate, Electronic engineering, Channel spacing, Backpropagation, Power (physics), Communication channel, Compensation (engineering)
Abstract

Impact of the Interchannel Interference in a gridless scenario based on Nyquist-WDM is evaluated under variation of power and spectral channel spacing. Backpropagation reduces the power penalty, but the overlapping effects induce a higher BER-penalty.

Published
2016

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