Title:
An equalization signal processor, an optical receiving set using it, and an equalization signal processing method
Document Type and Number:
Japanese Patent JP5943001
Kind Code:
B2
Abstract:
It becomes difficult to perform the optimum equalization signal processing in coherent receiving systems if a channel response in an optical fiber transmission line includes a factor without temporal centrosymmetry, therefore, an equalization signal processor according to an exemplary aspect of the invention includes an equalization filter means configured to receive digital signals by coherent receiving systems; a coefficient control means configured to control coefficients defining characteristics of the equalization filter means; a significant coefficient holding means configured to hold significant coefficients of significant values among initial values of the coefficients; a significant coefficient positioning means configured to determine a significant coefficient position, a position of the significant coefficients in the initial values, so that equalization characteristics of the equalization filter means may be optimized; and a significant coefficient setting means configured to allocate the significant coefficients to the significant coefficient position.
Inventors:
Arikawa Manabu
Ogasawara Daisaku
Le Tayandie de Gaborie Manuel
Kiyoshi Fukuchi
Ogasawara Daisaku
Le Tayandie de Gaborie Manuel
Kiyoshi Fukuchi
Application Number:
JP2013548049A
Publication Date:
June 29, 2016
Filing Date:
December 07, 2011
Export Citation:
Assignee:
NEC
International Classes:
H04B3/04; H04B10/2507; H04B10/61
Domestic Patent References:
| JP60117827A | ||||
| JP1194613A | ||||
| JP11008575A | ||||
| JP5292139A | ||||
| JP3190328A |
Other References:
Ling Liu, Zhenning Tao, Weizhen Yan, S.Oda, T.Hoshida, J.C.Rasmussen,Initial tap setup of constant modulus algorithm for polarization de-multiplexing in optical coherent receivers,Optical Fiber Communication - incudes post deadline papers, 2009. OFC 2009. Conference on ,2009年 3月
Attorney, Agent or Firm:
Masahiko Desk
Naoki Shimosaka
Naoki Shimosaka