Title :
An experimental investigation of high-rate nonbinary quasi-cyclic LDPC-coded modulation for coherent optical communication
Author :
Hong, Xuezhi ; Arabaci, Murat ; Djordjevic, Ivan B.
Abstract :
A rate-0.83 nonbinary quasi-cyclic LDPC-coded modulation scheme is experimentally investigated in a coherent optical QPSK system. Large coding gains are observed for both I/Q well balanced and highly imbalanced cases. By increasing the BCJR equalizer´s memory, degradation caused by insufficient receiver bandwidth is successfully mitigated.
Keywords :
cyclic codes; equalisers; optical fibre communication; optical modulation; parity check codes; quadrature phase shift keying; BCJR equalizer; QPSK; coding gains; coherent optical communication; nonbinary quasicyclic LDPC-coded modulation; receiver bandwidth; Fiber optics; Modulation; Optical attenuators; Optical filters; Optical interferometry; Optical receivers; Parity check codes; coherent optical communication; forward error correction; low-density parity-check (LDPC) codes;
Conference_Titel :
Photonics Conference (PHO), 2011 IEEE
Conference_Location :
Arlington, VA
Print_ISBN :
978-1-4244-8940-4
DOI :
10.1109/PHO.2011.6110474
