Title :
Investigation of 20Gb/s WDM-PON transmission over 40-km employing 16QAM signal with blind equalization
Author :
Qiwang Li ; Min Zhang ; Zhuo Liu ; Yueying Zhan ; Xue Chen
Author_Institution :
State Key Lab. of Inf. Photonics & Opt. Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
We apply 16QAM into the downstream modulation in long reach WDM-PON and utilize blind equalization at the ONU receiver to improve the system performance. Simulation results indicate that, with the blind equalization, after transmission over 40-km single mode fiber (SMF) at the speed of 20Gb/s, BER is remained below 10-3 at -17.2dBm receive sensibility. The results also show that the blind equalization is able to suppress the crosstalk between two adjacent WDM channels spacing 25GHz and thus improve the constellation phase rotation.
Keywords :
blind equalisers; error statistics; optical crosstalk; optical receivers; passive optical networks; quadrature amplitude modulation; wavelength division multiplexing; 16QAM signal; BER; ONU receiver; SMF; WDM-PON transmission; adjacent WDM channel; bit rate 20 Gbit/s; blind equalization; constellation phase rotation; distance 40 km; frequency 25 GHz; passive optical network; single mode fiber; wavelength division multiplexing; Adaptive optics; Blind equalizers; Optical crosstalk; Optical sensors; Optical transmitters; Passive optical networks; Wavelength division multiplexing; 16QAM; Blind Equalizaion; WDM-PON;
Conference_Titel :
Communications and Networking in China (CHINACOM), 2013 8th International ICST Conference on
Conference_Location :
Guilin
DOI :
10.1109/ChinaCom.2013.6694693
