| Jin-jing Tao,Yang-an Zhang,Yong-qing Huang,Jin-nan Zhang,Xue-guang Yuan,Yu-peng Li.Application of LDPC codes in atmospheric optical communication with coherent detection[J].Optoelectronics Letters,2013,9(2):132-134 |
| Application of LDPC codes in atmospheric optical communication with coherent detection |
| Author Name | Affiliation | E-mail | | Jin-jing Tao | State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China | taojinjing@bupt.edu.cn | | Yang-an Zhang | State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China | | | Yong-qing Huang | State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China | | | Jin-nan Zhang | State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China | | | Xue-guang Yuan | State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China | | | Yu-peng Li | State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China | |
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| Abstract: |
| A novel scheme employing low-density parity-check (LDPC) codes in atmospheric optical communication system is proposed. We deploy coherent detection at the receiving side in the proposed scheme. To reduce bit error rate (BER) and enhance the system performance, LDPC codes are exploited and coherent receiver is used to improve the receiving sensitivity. Experiments are implemented to evaluate the performance of the transmission system. The atmospheric channel attenuations are set to 20–30 dB/km. The coherent detection with LDPC codes can reduce the received power requirement by ～4 dBm at the BER of 10?9. |
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