Title :
Unconstraint adaptive frequency-domain equalizer for coherent optical receivers
Author :
Faruk, Md Saifuddin
Author_Institution :
Dept. of Electr. & Electron. Eng., Dhaka Univ. of Eng. & Technol., Gazipur, Bangladesh
Abstract :
In this paper, unconstraint adaptive frequency-domain equalizer (FDE) based on the constant-modulus algorithm (CMA) is investigated for equalization of linear transmission impairments in coherent optical receivers. With unrepeated 200-km transmission of 10-Gbaud quadrature phase-shift keying (QPSK) signal, it is verified that, compared with conventional constraint FDE, the proposed unconstraint FDE causes a very small sensitivity penalty; however, can be applied with much less computational complexity.
Keywords :
adaptive equalisers; computational complexity; optical modulation; optical receivers; quadrature phase shift keying; CMA; QPSK signal; adaptive FDE; coherent optical receivers; computational complexity; constant-modulus algorithm; linear transmission impairments; quadrature phase-shift keying signal; unconstrained adaptive frequency-domain equalizer; unconstraint adaptive frequency-domain equalizer; Adaptive filters; Bit error rate; Equalizers; Frequency-domain analysis; Optical receivers; Phase shift keying; adaptive filter; digital signal processing; equalization; optical fiber communication;
Conference_Titel :
Electrical and Computer Engineering (ICECE), 2014 International Conference on
Conference_Location :
Dhaka
Print_ISBN :
978-1-4799-4167-4
DOI :
10.1109/ICECE.2014.7027008
