Back to Search
Start Over
Performance of adaptive low-density parity check codes in a low cost spectrum-sliced WDM network
- Source :
- 2010 12th International Conference on Transparent Optical Networks.
- Publication Year :
- 2010
- Publisher :
- IEEE, 2010.
-
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.
- Subjects :
- Adaptive algorithm
Computer science
Data_CODINGANDINFORMATIONTHEORY
Noise (electronics)
Coding gain
symbols.namesake
Additive white Gaussian noise
Bit error rate
symbols
Electronic engineering
Forward error correction
Low-density parity-check code
Algorithm
Decoding methods
Computer Science::Information Theory
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- 2010 12th International Conference on Transparent Optical Networks
- Accession number :
- edsair.doi...........3ae75ccc3b25c911c0f3721e2a90de12