| 基于加权表决的POF信号时钟数据恢复方法 |
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| 引用本文： | 李嘉洁,陈非凡.基于加权表决的POF信号时钟数据恢复方法[J].光通信技术,2012,36(2):47-50. |
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| 作者姓名： | 李嘉洁 陈非凡 |
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| 作者单位： | 精密测试技术及仪器国家重点实验室,清华大学精密仪器与机械学系,北京100084 |
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| 摘 要： | 针对POF数据传输特点,提出了一种基于加权表决的全数字时钟数据恢复(CDR)方法.引入数据窗口,消除了传统数字CDR电路中存在的恢复时钟1/N UI峰峰抖动,运用加权表决恢复数据,增强了电路抗干扰能力.该方法基于FPGA通过单PLL实现了100Mb/s的POF数据传输.仿真和实验测试结果表明,该方法可快速同步相位变化,电路输入抖动容限可达0.28UI.
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| 关 键 词： | CDR 加权表决 过采样 塑料光纤 |
Weighted voting method of clock and data recovery for plastic optical fiber signal |
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| LI Jia-jie
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CHEN Fei-fan.Weighted voting method of clock and data recovery for plastic optical fiber signal[J].Optical Communication Technology,2012,36(2):47-50. |
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| Authors: | LI Jia-jie CHEN Fei-fan |
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| Affiliation: | (State Key Laboratory of Precision Measurement Technology and Instruments,Dept.of Precision Instruments and Mechanology,Tsinghua University,Beijing 100084,China) |
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| Abstract: | To meet plastic optical fiber data transmission requirements,an all-digital over-sampling CDR method base on weighted voting was presented.By using data window the 1/N UI recovery clock peak jitter,which existed in traditional digital CDR circuit,could be eliminated.Data recovery was achieved by weighted voting to enhance anti-interference capability of the circuit.The method realized 100Mb/s plastic optical fiber data transmission using one single PLL in FPGA.Simulation and experiment results indicate that the method is effective to synchronize rapid phase variation,and the input jitter tolerance of the circuit is up to 0.28UI. |
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| Keywords: | CDR weighted voting oversampling POF |
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