Abstract
In this paper, regular low-density parity-check (LDPC) codes have been applied for the first time to a low cost spectrum-sliced WDM system. The Gaussian approximation of the noise in such system has been commonly used in previous studies, and there is a standard LDPC code for symmetric additive white Gaussian noise (AWGN) channels. However, in the system considered here the actual noise character is asymmetric and chi-square distributed. Due to the specific channel property, an adaptive decoding algorithm based on the precise chi-square noise statistics has been proposed. Simulations are conducted for various code rates. The results show that such a forward error correction scheme provides significant coding gain for a dedicated system and the adaptive algorithm outperforms decoding with conventional Gaussian approximations.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
