Signal attenuation in the power line environment is often great, and unpredictable.
信号衰减在输电线环境经常是伟大和变化莫测的。
This paper discussed the trouble shooting, attenuation uniformity of optical fiber, optical fiber splicing and PMD problem in the maintenance of optical fiber line.
文章对线路维护工程中的光缆线路障碍查找、光纤衰减均匀性、光纤接续和偏振模色散（PMD）等问题进行了分析。
But, there exists serious noise and channel attenuation in power line and they affect the quality of communication seriously.
但由于电力线路存在着强噪音、信道衰减等原因，严重影响了通信质量。
First, power line Communication is introduced. The noise and attenuation characteristics of power line channel are measured and modeled.
首先，介绍了电力线通信，测量并分析了电力线信道的噪声和复衰减特性，并分别进行了建模。
First, power line Communication (PLC) is introduced. The noise and attenuation characteristics of power line channel are measured and modeled.
首先，介绍了电力线通信(plc)，测量并分析了电力线信道的噪声和复衰减特性，并分别进行了建模。
Through this paper, the low-voltage power line network and channel characteristics are researched. The noise and attenuation characteristics of power line channel are measured and analyzed.
本文首先分析了低压电力线网络的特点及信道特性，对电力线信道的噪声和复衰减特性分别进行了测量及分析。
Not only it provides attenuation of EMI energy conducted in power line, but also contributes significantly to the control of radiated EMI.
它不仅能衰减沿电源线传导的EMI能量，同时也对EMI的辐射有显著的抑制作用。
A model for thrust calculation was set up by combining Sedov's theory of self similarity solution for line explosion with shock wave theory of reflection and attenuation.
建立了基于谢多夫柱爆轰理论和冲击波反射与衰减理论的光船推力计算模型。
A new definition of distance parameter in attenuation law of ground motion, i. e. the average distance from site to both ends of rupture line is proposed.
文中对地面运动衰减规律中的距离参数提出了一种新的定义，即从场地到破裂线两端点的平均距离。这个定义能较好地反映发生构造地震的断层破裂模式。
The power line channel noise is simulated by MATLAB and the attenuation is simulated through the channel transmission module of FIR filter.
利用MATLAB及用fir滤波器做信道的传输函数模型对信道噪声和复衰减特性分别进行了建模。
The design of reliable high speed communication systems for power line communication (PLC) requires an accurate knowledge of such channel specific characteristics as attenuation, impedance and noise.
为了设计基于电力线通信（ PLC）的高速可靠通信系统，必须了解衰耗、阻抗、噪声等电力线信道特性。
According to this paper, the frequency and intensity of the signal attenuation on transmission line are mainly depended on the ferromagnetic resonance frequency and eddy current loss.
通过本文的研究表明，传输线上信号的衰减频率和强度主要依赖于磁性薄膜材料的亚铁磁共振频率和涡流损耗。
It is thoroughly considered in this new method that harmonic attenuation, reactive power compensation, mistuning, background harmonic and resonance with power line impedance.
该方法较全面地考虑了谐波治理、无功补偿、背景谐波、失谐、与电网阻抗的串并联谐振等问题。
If there is no attenuation the line will be flat.
如果没有衰减线将是平的。
There are stochastic Gaussian noise, multi-path effect and attenuation in the power line communication. It is difficult to transmit high-speed streams.
电力线通信存在随机高斯噪声干扰、多径效应和信道衰减，严重制约了高速数据的传输。
There are stochastic Gaussian noise, multi-path effect and attenuation in the power line communication. It is difficult to transmit high-speed streams.
电力线通信存在随机高斯噪声干扰、多径效应和信道衰减，严重制约了高速数据的传输。
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