Title :
Soft coded modulation for sensitivity enhancement of coherent 100-Gbit/s transmission systems
Author :
Bülow, Henning ; Rankl, Tobias
Author_Institution :
Bell Labs., Alcatel-Lucent, Stuttgart
Abstract :
Soft-decoding of a PDM-QPSK signal with 34%-FEC overhead-enabled by a symbol rate increase from 28 to 35 Gbaud-leads to 10.7-dB OSNR sensitivity. Soft-decoding is not effective for POL-QAM 6-4 modulation.
Keywords :
modulation coding; optical communication; quadrature phase shift keying; sensitivity; OSNR sensitivity; PDM-QPSK signal; fiber optics communication; sensitivity enhancement; soft coded modulation; soft-decoding; transmission systems; Concatenated codes; Forward error correction; Iterative decoding; Modulation coding; Optical modulation; Optical sensors; Optical signal processing; Optical transmitters; Parity check codes; Polarization; (060.2330) Fiber optics communications; (060.4080) Modulation;
Conference_Titel :
Optical Fiber Communication - incudes post deadline papers, 2009. OFC 2009. Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2606-5
Electronic_ISBN :
978-1-55752-865-0
