In the tdm system , it is an important technology to realize frame synchronization for that the communication goes along normally 在时分复用系统中，实现帧同步也是该系统正常通信的重要技术。
At the interface of the switch , streams of 64 kbits signals enter high - speed digital devices after being time division multiplexed 在交换机的接口处， 64kbits的信号流经时分复用后进入高速数字设备。
The main contents are as follows : 1 . the main principles and key technology in high - speed otdm system have been reviewed in detail 本文的主要内容如下： 1综述了高速光时分复用系统的基本原理和关键技术。
We call it twt photonic burst network because it employs otdm in the regional network and owdm in the long haul backbone network 由于在区域网络中使用光时分复用技术,而在长距离骨干网络中使用光波分复用技术,因此称之为twt光突发网络。
The new kind of telemetry tools uplink the data using tdm technology , but the data format of the tool bus is very different from traditional telemetry tools 新型遥传仪器仍采用时分复用技术传输数据，但其仪器总线的格式与传统遥传仪器截然不同。
There are three multiple - access techniques mainly in optical communication , including wdm , tdm and cdma . optical cdma techniques were proposed in mid - 1970s , now , have attracted much attention 在光通信领域，多址技术主要有wdm (波分复用) 、 tdm (时分复用)及ocdma (光码分多址)三种方式。
In tdm system , it ’ s the key problem to achieve steady and reliable frame synchronization . we can only resume original signals if we get the real frame synchronization 在时分复用系统中,如何实现稳定可靠的帧同步是必须解决的关键问题,只有可靠的帧同步,才能够正确的恢复出原始的各路信号。
In data communications , the serial synchronization transmission mode based on the technique of time divided mult iplex application is used for detecting multi - channels of signal only by two channels of fiber optic 通过采用时分复用的串行同步传输方式将数据信号通过两根光纤传递给信号接收机，实现了多路信号的采集。
2 . the progress in experiment of dispersion compensation in high - speed otdm system has been introduced , especially for fourth - order dispersion . 3 . the nonlinear shodinger equation with up to fourth - order dispersion and its " numerical simulation methord are presented 介绍了高速光时分复用系统中色散补偿技术的实验进展，并详细描述了高速光时分复用系统中四阶色散补偿的基本原理。
Ethernet provides best effort service , which does not provide quality of service and equity for different users . the topology structure of epon system contains many onus , which share bandwidth in the uplink direction using tdm method 由于以太网提供尽力而为的服务,不能保证不同业务的服务质量以及不同用户的公平性;另外, epon系统的拓扑结构是由多个onu采用时分复用方式共享上行链路带宽。
