查询词典 modulation

Through proper adjustment to frequency modulation amplitude,the Kerr-effect-induced bias can be effectively reduced.

通过适当调节两光束的频率调制幅度，可有效地实现克尔效应误差的消除。

The model and the related conclusion provide the theoretical basis for the manufacturing technology of semiconductor microcavity laser,improvement of high frequency modulation proper ty and optimization of device constitution.

该模型及有关结论为半导体微腔激光器的工艺制作，改善的高频调制特性和优化器件结构提供了理论依据。

The study inchcates that the best error pulse width and the competition pulse width are proportional to the sampling period to us and the modulation degree of SPWM; the number of competition pulse are dependent on the slop of us.

均与模数转换的采样周期和调制深度成正比，与载波比成反比；竞争脉冲的个数由us的斜率决定。

The modulation depth is focused on the intensity change of the protuberant part of the PSD curves.

计算和分析结果表明PSD分析结果能够在频率域反应出元件表面受到的不同程度的调制信息。

This paper presents a theoretical analysis of time-hopping pule position modulation ultra-wideband communication system under time-varying channel condition. The effect of scatters movement is analyzed under indoor channel condition with different channel parameters by simulation.

分析了时变信道环境条件下TH-PPM-UWB系统的性能，并通过计算机仿真研究了室内信道环境中，散射体移动对不同参数条件下系统性能的影响。

A novel fixed length digital pulse interval modulation for optical wireless communication .

无线光通信中的定长数字脉冲间隔调制。

The symbol length of digital pulse interval modulation is variable, so there are some difficulties to analyze error performances of Turbo coded DPIM.

数字脉冲间隔调制的符号长度变化不固定，因而分析该调制方式在Turbo码编码下的差错性能存在困难。

Fixed Length Dual-Amplitude Pulse Interval Modulation for Optical Wireless Communications.

无线光通信中的定长双幅度脉冲间隔调制。

This thesis primarily discussed that the construction and principle of Pulse-Code Modulation、transmitter、receiver and proceed the research to fiber-optic phonetic transmission system.

本论文主要讨论了PCM编译码、光发射机和光接收机的结构及原理，而且对光纤语音传输系统进行研究。

The word '' pulse '' in the term '' Pulse-Code Modulation '' is somewhat confusing, as there appear to be no "pulses" per se anywhere to be found except in the transmission line.

脉冲」一词用在「脉冲编码调变」中似乎显得令人困惑，因为除了在电线中的电力以外，并没有任何明显可见的「脉冲」。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。