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Artículo

On the performance of joint iterative detection and decoding in coherent optical channels with laser frequency fluctuations

Castrillón, Mario AlejandroIcon ; Morero, Damián Alfonso; Agazzi, Oscar Ernesto; Hueda, Mario RafaelIcon
Fecha de publicación: 05/2015
Editorial: Elsevier Science Inc
Revista: Optical Fiber Technology
ISSN: 1068-5200
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Ingeniería de Sistemas y Comunicaciones

Resumen

The joint iterative detection and decoding (JIDD) technique has been proposed by Barbieri et al. (2007) with the objective of compensating the time-varying phase noise and constant frequency offset experienced in satellite communication systems. The application of JIDD to optical coherent receivers in the presence of laser frequency fluctuations has not been reported in prior literature. Laser frequency fluctuations are caused by mechanical vibrations, power supply noise, and other mechanisms. They significantly degrade the performance of the carrier phase estimator in high-speed intradyne coherent optical receivers. This work investigates the performance of the JIDD algorithm in multi-gigabit optical coherent receivers. We present simulation results of bit error rate (BER) for non-differential polarization division multiplexing (PDM)-16QAM modulation in a 200 Gb/s coherent optical system that includes an LDPC code with 20% overhead and net coding gain of 11.3 dB at BER = 10-15. Our study shows that JIDD with a pilot rate ≤ 5% compensates for both laser phase noise and laser frequency fluctuation. Furthermore, since JIDD is used with non-differential modulation formats, we find that gains in excess of 1 dB can be achieved over existing solutions based on an explicit carrier phase estimator with differential modulation. The impact of the fiber nonlinearities in dense wavelength division multiplexing (DWDM) systems is also investigated. Our results demonstrate that JIDD is an excellent candidate for application in next generation high-speed optical coherent receivers.
Palabras clave: 16qam , Coherent Detection , Dwdm , Joint Iterative Detection And Decoding , Ldpc , Phase Noise
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/61553
URL: http://www.sciencedirect.com/science/article/pii/S1068520015000474
DOI: https://doi.org/10.1016/j.yofte.2015.04.002
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Articulos(CCT - CORDOBA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Citación
Castrillón, Mario Alejandro; Morero, Damián Alfonso; Agazzi, Oscar Ernesto; Hueda, Mario Rafael; On the performance of joint iterative detection and decoding in coherent optical channels with laser frequency fluctuations; Elsevier Science Inc; Optical Fiber Technology; 24; 5-2015; 5-14
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