传输损伤在任何传输系统中,由于各种传输损伤的存在,可能接收到的信号与传输信号并不完全一样。就模拟信号而言,这些损伤降低信号的质量。对于数字信号则会导致比特差错,比如二进制的1变成了二进制的0,或者反过来。这种损伤会造成通信上的损失。下面介绍的几个最重要的损伤有:衰减和衰减失真,时延失真和噪声。
Due to transmission impairment caused by the physical layer, routing and wavelength assignment algorithm for network management must take the performance of physical layer into account in order to guarantee the reliability of network and the quality of services.
由于光网络物理结构本身导致的信号传输损伤,使得进行网络资源分配与控制的节点管理模块在进行路由与波长分配时必须考虑物理层的特性,以保证网络的可靠性与服务质量。
参考来源 - 光网络传输损伤综合评估与仿真软件·2,447,543篇论文数据,部分数据来源于NoteExpress
本模型的主要特征是反应现代信号处理装置效应传输损伤因数的使用。
A major feature of this model is the use of transmission impairment factors that reflect the effects of modern signal processing devices.
SDH指针调整引起的抖动是SDH网中重要的传输损伤,如何抑制指针调整引起的抖动已经成为SDH系统设计中一个关键的问题。
The jitter induced by pointer adjustment is one of the main impairments in SDH network, how to reduce it is a key problems in SDH system design.
放射外科所用高能X射线必须提供毫米以下精度的能量传输才能避免损伤周围器官和健康组织。
High X-ray doses prescribed for radiosurgery must be delivered with sub-millimetre precision to avoid damaging nearby organs and healthy tissue.
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