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fading of
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     Elimination of Signal Fading of the Mach-Zehnder Interferometers with a Novel Signal Processing Method
     克服光纤Mach-Zehnder干涉仪信号衰落的新方法及分析
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     A New Method to Eliminate the Signal Fading of Interferometric Fiber Optic Sensors
     消除干涉型光纤传感器信号衰落的新方法
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     Five DTV terrestrial broadcasting systems are introduced and two of them are compared, e.g. DVB-T COFDM and ATSC 8VSB.In the second chapter, the capability of combating with the channel fading of OFDM tech is studied and analyzed.
     对两种比较典型的传输标准:DVB-T和ATSC作了性能对比分析,并将比较的焦点集中到对抗强多径衰落和长时延的静态和动态多径衰落的性能上。
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     As the characteristics of time-varying and frequency-selective fading of wireless channel, spectrum resource can be utilized more efficiently by adopting the dynamic allocation algorithm, which allocates bit and subcarrier according to channel characteristic of each subcarrier. Hence the bit and subcarrier dynamic allocation algorithms is emphasized in this thesis.
     由于无线信道具有时变和频率选择性衰落的特性,采用动态的分配算法,根据各个子载波上实时的信道特性,相应进行比特和子载波的分配,能更加高效地利用频带资源。
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     As a multicarrier modulation manner, OFDM (Orthogonal Frequency Division Multiplexing) technique can effectively resist the multipath fading of wireless channels and possesses a high useability of frequency spectrum.
     正交频分复用(OFDM)技术是一种可以有效抗无线信道多径衰落的多载波调制方式,具有较高的频谱利用率。
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  “fading of”译为未确定词的双语例句
     Reasons and Solutions for Capacity Fading of Spinel LiMn_2O_4
     尖晶石LiMn_2O_4容量衰减的原因及解决方法
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     Mechanism and improvement for capacity fading of spinel LiMn_2O_4
     尖晶石LiMn_2O_4容量衰减原因及对策
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     Main factors inducing capacity fading of LiMn_2O_4 positive electrode
     影响LiMn_2O_4正极材料容量衰退的主要因素
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     Causes and prevention for capacity fading of spinel LiMn_2O_4 at elevated temperature
     高温下LiMn_2O_4的容量衰减及对策
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     In addition, the capacity fading of LiMn 2O 4 at high temperature is caused by the Jahn Teller effect and the change of LiMn 2O 4 structure at high temperature.
     此外Jahn Teller效应和高温下LiMn2 O4结构的变化也会导致LiMn2 O4高温容量损失。
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     Australian Aborigines Fading
     澳大利亚土著已经消失?
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     The Fading Away of Beauty
     美的失落——田纳西·威廉斯笔下的南方女性
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     Revelation on Foreign Brands' Fading
     洋品牌褪色带来的启示
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     The Characteristic Analysis of Multipath Fading
     小尺度衰落的定性分析
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  fading of
In a weak acidic medium, the reaction of some aminoglycoside antibiotics (AGs) such as kanamycin sulfate (KANA), gentamycin sulfate (GEN), and tobramycin sulfate (TOB) with acid thiazolyl bisazo dye Titan Yellow (TY) can result in the fading of TY.
      
The fading of the signal amplitude of an unbalanced interference system in response to changes in the emission spectrum of the optical source is investigated.
      
For Multi-Carrier-Code Division Multiple Access (MC-CDMA) systems, it is usually assumed that the fading of the subcarriers is frequency non-selective and independent of each other.
      
Influence of surfactants on the fading of malachite green
      
The effects of dot density and motion coherence on perceptual fading of a target in noise
      
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In this paper are discussed the statistical properties of the averaging adaptive threshold detection in more general conditions in which the sample values may be pure noise or useful signal mixed up in noise and so their probability distributon functions, mean values and variances may be the same or different. This averaging adaptive threshold detection is a generalization of Reference [2], It may be Used in both digital communication and radar. When the adaptive detection is used in Rayleigh fading of...

In this paper are discussed the statistical properties of the averaging adaptive threshold detection in more general conditions in which the sample values may be pure noise or useful signal mixed up in noise and so their probability distributon functions, mean values and variances may be the same or different. This averaging adaptive threshold detection is a generalization of Reference [2], It may be Used in both digital communication and radar. When the adaptive detection is used in Rayleigh fading of short wave telegram communication, its error rates are less than any fixed threshold detection with respect to any input signal noise ratio.

本文分析了平均值自适应门限检测器的统计特性,导出了在实用中常见的慢衰落信道上的平均值自应门限检测器的误码率.分析结果表明:在慢衰落信道上采用这种平均值自适应门限检测器的误码率,相对于固定门限检测器来说,在不同输入信/噪比的情况下,都有不同程度的降低.本文讨论的虽是通讯问题,但其基本结果,也适用于雷达.

Basing on the characteristics of railway mobile communication and a large quantity of measured data, this paper obtains propagation curves with regard to the field strength —— distance —— height of antenna by method of mathematical statistiesoStudies also are conducted on the rule of fading of field strength along the railway line. A function of probability distribution of fading is derived and the deviation coefficient and probability coefficient of field strength are obtained. It may prove to be...

Basing on the characteristics of railway mobile communication and a large quantity of measured data, this paper obtains propagation curves with regard to the field strength —— distance —— height of antenna by method of mathematical statistiesoStudies also are conducted on the rule of fading of field strength along the railway line. A function of probability distribution of fading is derived and the deviation coefficient and probability coefficient of field strength are obtained. It may prove to be useful in estimating VHF and UHF field strength for railway mobile communication.

本文根据铁路移动通信的特点,在大量实测数据的基础上采用数理统计方法,得出场强—距离—天线高度的传播曲线。并研究场强沿铁路的起伏规律,导出场强起伏的概率分布函数,得到场强偏差系数和概率系数。为估算超短波铁路移动通信场强提供数据。

In this paper, a new ultrasonic method of measuring the amount of sand contained in fluid or in sediment model has been introduced. Its principle is based on two considerations: one is that the number of the ultrasonic reflecting waves from the floating sand in fluid is proportional to the amount of sand contained in fluid and the other is that the fading of the ultrasonic wave in fluid increases, following exponential law, with the increase of the amount of sand con tained in fluid. A basic formula is...

In this paper, a new ultrasonic method of measuring the amount of sand contained in fluid or in sediment model has been introduced. Its principle is based on two considerations: one is that the number of the ultrasonic reflecting waves from the floating sand in fluid is proportional to the amount of sand contained in fluid and the other is that the fading of the ultrasonic wave in fluid increases, following exponential law, with the increase of the amount of sand con tained in fluid. A basic formula is then found and it coincides with the results of a large amount of experiments on different model sand.

本文所提出的超声测沙方法的原理,是根据超声波在含沙水流中传播时在悬沙上产生的反射波的数目来测量含沙量的大小。本文在理论上作了一些分析,得出了回波数目与含沙量之间在数量上的基本关系式。在实验上,对煤粉、塑料沙进行了大量的试验。实验结果表明回波数与含沙量之间存在着一定的规律,并与从理论上分析所求得的关系式相符。

 
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