Title :
Fiber-nonlinearity equalization by maximum-likelihood-sequence estimation (MLSE) in digital coherent receivers
Author :
Khairuzzaman, Md ; Zhang, Chao ; Igarashi, Koji ; Katoh, Kazuhiro ; Kikuchi, Kazuro
Author_Institution :
Dept. of Electron. Eng., Univ. of Tokyo, Tokyo, Japan
Abstract :
Maximum-likelihood-sequence estimation (MLSE) is successfully introduced into the digital coherent receiver together with FIR filters. We can compensate for both linear and nonlinear impairments of 20-Gbit/s QPSK signals transmitted through a 200-km-long standard single-mode-fiber.
Keywords :
FIR filters; maximum likelihood estimation; optical receivers; quadrature phase shift keying; FIR filters; QPSK signal; bit rate 20 Gbit/s; digital coherent receivers; distance 200 km; fiber-nonlinearity equalization; maximum-likelihood-sequence estimation; standard single-mode-fiber; Erbium-doped fiber amplifier; Fiber nonlinear optics; Finite impulse response filter; Maximum likelihood estimation; Optical attenuators; Optical feedback; Optical filters; Optical receivers; Optical transmitters; Quadrature phase shift keying;
Conference_Titel :
OptoElectronics and Communications Conference, 2009. OECC 2009. 14th
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-4102-0
Electronic_ISBN :
978-1-4244-4103-7
DOI :
10.1109/OECC.2009.5214093
