Theoretical investigation of pilot allocation for pilot-aided phase channel estimation in optical-orthogonal frequency division multiplexed fiber system

Claudia Milena Serpa-Imbett, Jeison Marín-Alfonso, Leonardo Betancur, Ferney Amaya-Fernández

Resultado de la investigación: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

Resumen

In this paper, we show a novel pilot-aided phase channel estimation approach based on theoretical relation between chromatic dispersion and coherence bandwidth, for pilots allocation in an symbol multiplexed by orthogonal frequency division multiplexing and transmitted to optical fiber system. The method is implemented on Matlab® to make a linear interpolation between adjacent pilot carriers, which are separated by data, in the symbol. Our simulations use an optical bandwidth of 12.5 GHz and Fast Fourier Transform size of 128 to establish the number of pilots for having error free and suitable channel estimation for a fiber length up to 1000 km. In our simulations, we took into account the parameters of a standard single-mode fiber. We calculate the minimum number of pilot carriers for a suitable pilot-aided channel estimation based on the analysis of the symbol position in the constellation diagrams for QPSK and 16-PSK signals, which should be limited to a decision area. We show that the minimum number of pilots for suitable channel estimation is lower than the number of pilots for channel estimation with error free.

Idioma originalInglés
Título de la publicación alojada2013 IEEE Colombian Conference on Communications and Computing, COLCOM 2013 - Conference Proceedings
DOI
EstadoPublicada - 2013
Publicado de forma externa
Evento2013 IEEE Colombian Conference on Communications and Computing, COLCOM 2013 - Medellin, Colombia
Duración: 22 may. 201324 may. 2013

Serie de la publicación

Nombre2013 IEEE Colombian Conference on Communications and Computing, COLCOM 2013 - Conference Proceedings

Conferencia

Conferencia2013 IEEE Colombian Conference on Communications and Computing, COLCOM 2013
País/TerritorioColombia
CiudadMedellin
Período22/05/1324/05/13

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