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信号分隔方式选择 1、频率分隔方式(FDM) 用频率分隔方式实现双向传输是目前网络中应用最多的方式之一,它采用不同频段来传送上、下行信号和信息。在网络中开展各种数据交互式业务服务。该方式按频率分隔的范围不同,又分为低、中、高频率分隔,它的选取原则主要取决于系统功能的多少和规模的大小、信息量的多少及设备性能的允许程度等因素而定。可根据新的双向传输系统的频率标准耒配置。
Separation of signal options 1, the frequency separation method (FDM) Frequency separation method to achieve two-way transmission is currently the most widely used network, which uses different frequency bands to transmit uplink and downlink signals and information. In the network to carry out a variety of data interactive business services. This method is divided into different frequency range, is divided into low, medium and high frequency separation, and its selection principle depends mainly on the number of system functions and the size of the size of the amount of information and equipment performance allowable degree and other factors . It can be configured according to the frequency standard of the new two-way transmission system.