Title :
Digital lightwave receiver employing parallel-DSP-based equalization technique for 100 Gbps 1000-km RZ-DQPSK optical communication system
Author :
Nguyen Anh Vinh ; Nguyen Huu Phuong ; Le Nguyen Binh ; Dang Van Liet
Author_Institution :
Fac. of Electron. & Telecommun., Univ. of Sci., Ho Chi Minh City, Vietnam
Abstract :
We demonstrate by simulation a parallel decision feedback equalization (DFE) technique at multi-GSa/s sampling rate employing recursive least square (RLS) and mean square error (MSE) adaptive algorithms to mitigate the chromatic dispersion (CD) and nonlinear impairments in 100 Gbps 1000 km long-haul optically amplified fiber transmission systems under RZ-DQPSK modulation formats. The digital equalizer is embedded in the coherent lightwave receiver in cascade with the electronic preamplifier and an ADC. RLS algorithm offers a CD tolerance of nearly 300 kms of G652 Standard Single Mode Fiber; while the MSE algorithms can tolerate only about 240 kms. Our simulation for the long haul optical transmission system is developed on the Matlab Simulink platform.
Keywords :
least squares approximations; mean square error methods; optical dispersion; optical feedback; optical fibre amplifiers; optical fibre communication; optical receivers; CD tolerance; MSE algorithms; Matlab Simulink platform; RZ DQPSK; bit rate 100 Gbit/s; chromatic dispersion; digital lightwave receiver; distance 1000 km; electronic preamplifier; mean square error adaptive algorithms; optical communication system; optically amplified fiber transmission; parallel decision feedback equalization; recursive least square; Modulation; Nonlinear optics; Optical distortion; Optical noise; Optical receivers; Stimulated emission;
Conference_Titel :
Advanced Technologies for Communications (ATC), 2011 International Conference on
Conference_Location :
Da Nang
Print_ISBN :
978-1-4577-1206-7
DOI :
10.1109/ATC.2011.6027455