Title :
Unrepeated 210-km transmission with coherent detection and digital signal processing of 20-Gb/s QPSK signal
Author :
Ly-Gagnon, Dany-Sebastien ; Katoh, Kamhiro ; Kikuchi, Kazuro
Author_Institution :
Res. Center for Adv. Sci. & Technol., Tokyo Univ., Japan
Abstract :
We demonstrate an unrepeated transmission of 20-Gb/s QPSK. signals over 210 km using coherent detection and digital signal processing. Phase estimation of the homodyne-detected QPSK signal improves the bit-error rate performance compared to differential demodulation.
Keywords :
error statistics; homodyne detection; optical fibre communication; optical modulation; phase estimation; quadrature phase shift keying; 20 Gbit/s; 210 km; bit-error rate performance; coherent detection; differential demodulation; digital signal processing; homodyne-detected QPSK signal; phase estimation; quadrature phase shift keying; Decoding; Demodulation; Digital signal processing; Optical modulation; Optical receivers; Optical sensors; Optical signal processing; Phase estimation; Quadrature phase shift keying; Signal processing;
Conference_Titel :
Optical Fiber Communication Conference, 2005. Technical Digest. OFC/NFOEC
Print_ISBN :
1-55752-783-0
DOI :
10.1109/OFC.2005.192657
