A novel construction scheme of QC-LDPC codes based on the RU algorithm for optical transmission systems
| Autor: | Meng-qi Liang, Yu Pang, Jin-zhao Lin, Jian-guo Yuan, Yong Wang |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Computer science
Concatenated error correction code 02 engineering and technology Code rate Condensed Matter Physics Linear code Atomic and Molecular Physics and Optics Coding gain Electronic Optical and Magnetic Materials 020210 optoelectronics & photonics Cyclic code 0202 electrical engineering electronic engineering information engineering Constant-weight code Electrical and Electronic Engineering Low-density parity-check code Algorithm Decoding methods |
| Zdroj: | Optoelectronics Letters. 12:132-135 |
| ISSN: | 1993-5013 1673-1905 |
| Popis: | A novel lower-complexity construction scheme of quasi-cyclic low-density parity-check (QC-LDPC) codes for optical transmission systems is proposed based on the structure of the parity-check matrix for the Richardson-Urbanke (RU) algorithm. Furthermore, a novel irregular QC-LDPC(4 288, 4 020) code with high code-rate of 0.937 is constructed by this novel construction scheme. The simulation analyses show that the net coding gain (NCG) of the novel irregular QC-LDPC(4 288,4 020) code is respectively 2.08 dB, 1.25 dB and 0.29 dB more than those of the classic RS(255, 239) code, the LDPC(32 640, 30 592) code and the irregular QC-LDPC(3 843, 3 603) code at the bit error rate (BER) of 10-6. The irregular QC-LDPC(4 288, 4 020) code has the lower encoding/decoding complexity compared with the LDPC(32 640, 30 592) code and the irregular QC-LDPC(3 843, 3 603) code. The proposed novel QC-LDPC(4 288, 4 020) code can be more suitable for the increasing development requirements of high-speed optical transmission systems. |
| Databáze: | OpenAIRE |
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