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结合基于ＡＴＭ 的无源光网络（ＡＰＯＮ）的最新进展，系统介绍了实现ＡＰＯＮ 需要解决的测距、媒质接入控制（ＭＡＣ） 、突发接收、同步和搅码等关键技术问题，并提出了相应的解决方案
Combining with the latest progress of ATM-based Passive Optical Network (APON), the key technical issues such as ranging, medium access control (MAC), burst reception, synchronization and scrambling are introduced systematically. The corresponding solution