| 何文雪,张文博,李超,席丽霞,张晓光,乔耀军.高速相干光通信系统中水印辅助的低密度奇偶校验方案[J].光电子激光,2015,26(6):1100~1105 |
| 高速相干光通信系统中水印辅助的低密度奇偶校验方案 |
| Watermark auxiliary LDPC scheme in high-speed coherent optical communication sy stem |
| 投稿时间：2015-01-09 |
| DOI： |
| 中文关键词: 光通信 低密度奇偶校验码(LDPC) 水印辅助方案 译码性能 |
| 英文关键词:optical communication low density parity check code (LDPC) watermark auxiliary scheme decoding performance |
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| 中文摘要: |
| 为了研究水印辅助的低密度奇偶校验(LDPC)方 案在高速相干接收光通信系统 中的译码性能,提出了一种适用于相干光通信系统的水印符号辅助的LDPC前向纠错方案 ,与传统LDPC相比,可以大大提高相干接 收机的抗噪声能力。在100Gbit/s 16进制正 交幅度高制(16QAM)相干接收光通信系统上的仿真实验结果表明, 在误码率(BER)为10－9时, 所提出的前向纠错方案与传统LDPC相比 较,信噪比(SNR)增益提高了0.45dB ；同时,在相同BER下,水印符号辅助的LDPC方 案的译码迭代次数有很明显的降低。 |
| 英文摘要: |
| In order to research the decoding performance of watermark auxiliary low density parity check scheme in high-speed coherent optical communication system ,this paper presents a forward error correction scheme of watermark symbols auxiliary low density parity check code used in the coherent communication syste m. Compared with the traditional low density parity check code,the new scheme ca n greatly improve the noise immunity of coherent receiver.After running o n the 100Gbit/s 16QAM coherent optical simulation system,the results show that a n improvement of 0.45dB signal noise ratio (SNR) gain has been realized by the proposed forward error correction scheme compared with traditional low density parity check code ,at post-forward error correction bit error rate (BER) of 10－9.Also,to obtain the same BER,the number of iterations u sed in watermark system auxiliary LDPC decoding decreases. |
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