Title :
Modified CMA based blind equalization and carrier-phase recovery in PDM-QPSK coherent optical receivers
Author :
Faruk, Md Saifuddin
Author_Institution :
Dept. of Electr. & Electron. Eng., Dhaka Univ. of Eng. & Technol., Gazipur, Bangladesh
Abstract :
Digital coherent optical receivers enable equalization of fiber transmission impairments and carrier-phase estimation in digital domain. In this paper, a novel equalization and carrier-phase recovery algorithm, both based on modified constant-modulus algorithm (CMA), is proposed for polarization-division multiplexed quadrature phase-shift keying (PDM-QPSK) systems. The proposed scheme is validated with 40-Gbits/s PDM-QPSK transmission experiments.
Keywords :
blind equalisers; optical fibre communication; optical receivers; phase shift keying; CMA; PDM-QPSK coherent optical receivers; carrier-phase estimation; carrier-phase recovery; digital coherent optical receivers; fiber transmission impairments; modified CMA based blind equalization; modified constant-modulus algorithm; optical fiber communication; polarization-division multiplexed quadrature phase-shift keying system; Blind equalizers; Demultiplexing; Estimation; Optical receivers; Signal processing algorithms; Optical fiber communication; carrier-phase recovery; digital signal processing; equalization;
Conference_Titel :
Computer and Information Technology (ICCIT), 2013 16th International Conference on
Conference_Location :
Khulna
DOI :
10.1109/ICCITechn.2014.6997333
