光学学报, 2017, 37 (1): 0106004, 网络出版: 2017-01-13
基于脉冲展宽波形的光脉冲位置调制异步采样信号的数据恢复技术
Data Recovery Technique for Asynchronous Sampling Signal Modulated by Optical Pulse Position Based on Pulse Broadening Waveform
光通信 光脉冲位置调制 泊松信道 脉冲展宽效应 时钟恢复 optical communications optical pulse position modulation Poisson channel pulse broadening effect clock recovery
摘要
提出了一种基于脉冲展宽波形的插值与脉冲展宽效应补偿合并的数据恢复方案。该方案依据权系数同时实现了插值与脉冲展宽效应补偿, 解决了时隙抽样误差和抖动问题, 完成了脉冲位置调制时隙信号的数据恢复。仿真结果表明, 所提出的方案具有较好的稳健性, 可有效抑制时隙抽样误差和抖动。在译码时使用的抖动参数与实际抖动参数不匹配的条件下, 该方案的性能仍优于将插值与脉冲展宽效应补偿分离处理的方案。该方案将插值与脉冲展宽效应补偿合并在一起, 运算更简化。
Abstract
A data recovery scheme, which combines the pulse broadening wave shape interpolation with the pulse broadening effect compensation, is proposed. The scheme can realize interpolation and pulse broadening effect compensation at the same time according to the weight coefficient, solve the problems of time slot sampling error and jitter, and achieve data recovery of time slot signal modulated by pulse position. The simulation results indicate that the proposed scheme has a good robustness, and can solve the problems of time slot sampling error and jitter effectively. Under the condition that the jitter parameters used in decoding mismatch with the actual parameters, the performance of the proposed scheme is still better than the scheme in which the interpolation and the pulse broadening effect compensation are separated. For the proposed scheme combines the interpolation with the pulse broadening effect compensation, the computation is simplified.
向劲松, 王举, 吴涛, 张学旺. 基于脉冲展宽波形的光脉冲位置调制异步采样信号的数据恢复技术[J]. 光学学报, 2017, 37(1): 0106004. Xiang Jinsong, Wang Ju, Wu Tao, Zhang Xuewang. Data Recovery Technique for Asynchronous Sampling Signal Modulated by Optical Pulse Position Based on Pulse Broadening Waveform[J]. Acta Optica Sinica, 2017, 37(1): 0106004.