Title :
Experimental comparison of PS-QPSK and LDPC-coded PM-QPSK with equal spectral efficiency in WDM transmission
Author :
Eriksson, Tobias A. ; Johannisson, Pontus ; Agrell, Erik ; Andrekson, Peter A. ; Karlsson, Magnus
Author_Institution :
Dept. of Microtechnol. & Nanosci., Chalmers Univ. of Technol., Gothenburg, Sweden
Abstract :
We compare QPSK with a rate 0.75 LDPC-code and PS-QPSK, which have the same spectral efficiency, in long-haul WDM transmission. We show that LDPC-coded PM-QPSK can achieve up to 98% increased transmission distance over uncoded PS-QPSK at BER = 10-3.
Keywords :
light polarisation; optical modulation; parity check codes; quadrature phase shift keying; wavelength division multiplexing; BER; LDPC-coded PM-QPSK; long-haul WDM transmission; low-density parity check code; polarization-switched quadrature phase-shift keying; spectral efficiency; Bit error rate; Optical attenuators; Optical polarization; Optical transmitters; Parity check codes; Phase shift keying; Wavelength division multiplexing;
Conference_Titel :
Optical Communication (ECOC), 2014 European Conference on
Conference_Location :
Cannes
DOI :
10.1109/ECOC.2014.6964035
