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突发时钟恢复是ATM无源光网络（PON）中的关键技术．本文提出了一种基于关键字检测来提取突发同步时钟的简单方法，模拟分析表明此方法性能可靠．若采用高速ECL器件，此方法亦可用于超级无源光网络（Super－PON）及其它高速TDMA系统中．
Burst clock recovery is a key technology in ATM Passive Optical Network (PON). This paper presents a simple method based on keyword detection to extract the burst synchronization clock. The simulation results show that this method is reliable. This method can also be used in Super-PON and other high-speed TDMA systems with high-speed ECL devices.