Title :
BER performance with soft and hard decision decoder for coherent optical DPSK systems corrupted by phase noise
Author :
Jaouén, Y. ; Djadel, M. ; Chabran, C.
Author_Institution :
Dept. of Commun., Ecole Nat. Superieure des Telecommun., Paris, France
fDate :
1/19/1995 12:00:00 AM
Abstract :
The performance of coherent optical communication systems is significantly degraded by semiconductor laser phase noise. A rate 1/2, constraint length K=7, convolutional error correcting code with Viterbi decoding is used to improve a 3.5-10 Mbit/s DPSK system. Error correcting coding demonstrates the reduction of the influence of phase noise on BER performance, and significantly lowers the BER floor. Soft decision decoding and hard decision decoding performance is investigated and compared
Keywords :
Viterbi decoding; differential phase shift keying; digital communication; error correction codes; error statistics; optical fibre communication; phase noise; 3.5 to 10 Mbit/s; BER performance; Viterbi decoding; coherent optical DPSK systems; convolutional ECC; error correcting code; hard decision decoder; optical communication systems; phase noise corruption; semiconductor laser phase noise; soft decision decoder;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19950079
