Title :
LDPC codes for optical channels: Is the “FEC limit” a good predictor of post-FEC BER?
Author :
Alvarado, Alex ; Agrell, Erik ; Lavery, Domanic ; Bayvel, Polina
Author_Institution :
Opt. Networks Group, Univ. Coll. London (UCL), London, UK
Abstract :
We answer the question in the title negatively. More precisely, the FEC limit is invalid for soft decision decoding and low to medium code rates. A better predictor is the generalized mutual information.
Keywords :
decoding; error statistics; forward error correction; optical communication; parity check codes; FEC limit; LDPC codes; forward error correction; generalized mutual information; low to medium code rates; optical channels; post-FEC BER; soft decision decoding; Bit error rate; Decoding; Forward error correction; Modulation; Mutual information; Parity check codes; Receivers;
Conference_Titel :
Optical Fiber Communications Conference and Exhibition (OFC), 2015
Conference_Location :
Los Angeles, CA
