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Normalized LMS digital filter for chromatic dispersion equalization in 112-Gbit/s PDM-QPSK coherent optical transmission system
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Xu, Tianhua, Jacobsen, Gunnar, Popov, Sergei, Li, Jie, Wang, Ke and Friberg, Ari T. (2010) Normalized LMS digital filter for chromatic dispersion equalization in 112-Gbit/s PDM-QPSK coherent optical transmission system. Optics Communications, 283 (6). pp. 963-967. doi:10.1016/j.optcom.2009.11.011 ISSN 0030-4018.
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Official URL: http://dx.doi.org/10.1016/j.optcom.2009.11.011
Abstract
High bit rates optical communication systems pose the challenge of their tolerance to linear and non-linear fiber impairments. Coherent optical receivers using digital signal processing techniques can mitigate the fiber impairments in the optical transmission system, including the chromatic dispersion equalization with digital filters. In this paper, an adaptive finite impulse response filter employing normalized least mean square algorithm is developed for compensating the chromatic dispersion in a 112-Gbit/s polarization division multiplexed quadrature phase shift keying coherent communication system, which is established in the VPI simulation platform. The principle of the adaptive normalized least mean square algorithm for signal equalization is analyzed theoretically, and at the meanwhile, the taps number and the tap weights in the adaptive finite impulse response filter for compensating a certain fiber chromatic dispersion are also investigated by numerical simulation. The chromatic dispersion compensation performance of the adaptive filter is analyzed by evaluating the behavior of the bit-error-rate versus the optical signal-to-noise ratio, and the compensation results are also compared with other present digital filters.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
Journal or Publication Title: | Optics Communications | ||||
Publisher: | Elsevier BV * North Holland | ||||
ISSN: | 0030-4018 | ||||
Official Date: | 2010 | ||||
Dates: |
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Volume: | 283 | ||||
Number: | 6 | ||||
Page Range: | pp. 963-967 | ||||
DOI: | 10.1016/j.optcom.2009.11.011 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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