摘要
A quasi-cyclic low-density parity check （QC-LDPC） code is constructed by an improved stability of the shortest cycle algorithm for 160-Gb/s non-return zero differential quadrature phase shift keying （NRZ- DQPSK） optical transmission system with the fiber-based optical parametric amplifier （FOPA）. The QC- --14 d LDPC code with stability of the shortest cycle reduces the bit error ratio （BER） to 10 an restrains the error floor effectively.
A quasi-cyclic low-density parity check （QC-LDPC） code is constructed by an improved stability of the shortest cycle algorithm for 160-Gb/s non-return zero differential quadrature phase shift keying （NRZ- DQPSK） optical transmission system with the fiber-based optical parametric amplifier （FOPA）. The QC- --14 d LDPC code with stability of the shortest cycle reduces the bit error ratio （BER） to 10 an restrains the error floor effectively.
基金
supported by the National"973"Program of China(Nos.2010CB327605 and 2010CB328304)
the Key Grant of Ministry of Education of China(No.109015)
the Program for New Century Excellent Talents in University(No.NECT-11-0596)
the Beijing Nova Program(No.2011066)
the Specialized Research Fund for the Doctoral Program of Higher Education(No.20120005120021)
the Fundamental Research Funds for the Central Universities(No.2013RC1202)
the China Postdoctoral Science Foundation(No.2012M511826)
the Postdoctoral Science Foundation of Guangdong Province(No.244331)
