Thus, method may be used to effectively improve the performance of high-order modulation OFDM systems.
该方法可有效应用于提高高阶调制OFDM系统的性能。
In order to measure the Modulation Transfer Function (MTF) of image sensor conveniently, contact measurement using rectangle template is proposed based on sine template contact measurement.
为了方便地测量图像传感器的调制传递函数(MTF)，在正弦模板法基础上，提出了矩形模板接触测量的方法。
In order to study the strategy of input current modulation, the simulation model of matrix converter under unbalanced input is built with MATLAB.
通过参数设定、输入电压相位计算、控制算法实现和开关接口等环节设计，实现了输入电流偏置角动态调整的控制策略。
In order to improve the frequency stability of the frequency modulation circuit and the crystal oscillator, using the temperature compensation circuit is extremely effective method.
为了提高调频电路和晶体振荡器的频率稳定度，采用温度补偿电路是一种极其有效的方法。
In order to accomplish the data process and conversion, the clock generation circuit, 100% modulation signal and 10% signal demodulation circuit are designed.
为了完成数据的处理和交换，分别设计了时钟产生电路、100%调制信号和10%调制信号的解调电路。
In order to obtain the signs of modulation voltages, the paper also proposes a hysteretic sign calculation algorithm and proves the real-time property of the control method.
另外，为了得到三相调制电压的符号，文中提出了一种符号滞后判断方法，证明了上述控制方法的实时性。
In order to resolve source shortage of television tower, adopting frequency modulation and television multi-channel with total tower.
为了解决发射塔资源短缺问题，可采用调频和电视多频道共塔技术。
The results show that, in case of high-order dispersion, the positive and negative quintic nonlinearity also intensifies and weakens the cross-phase modulation instability, respectively.
研究表明，在高阶色散下，正负五阶非线性的存在仍然分别对交叉相位调制不稳定性起加强和削弱的作用；
A flat-topped beam can be achieved by a suitable choice of the transform order for the Cosine-Gaussian beams with the modulation parameter.
对给定调制参数的余弦-高斯光束，通过适当选取分数傅里叶变化阶数可以获得平顶的光强分布。
A type of electronic modulation in which the phase of a carrier wave is varied in order to transmit the information contained in the signal.
相位调制，调相：一种电子调幅，为了传递包含在信号中的信息，而使载波的相位改变。
In order to enhance the anti-interception performance of modulation-hopping technology, a method to design wide-gap chaos modulation hopping pattern based on time of day(TOD) is proposed.
为增强调制跳变技术的抗截获性能，提出一种基于时间信息（TOD）的宽间隔混沌调制跳变图案设计方法。
Threshold and training parameters are not needed with this method, but can recognize higher-order digital modulation types.
该方法无需设置判决门限，也无需进行参数训练，且可以识别大于四阶的数字调制类型。
In order to solve the lower measurement efficiency in traditional modulation profilometry, a fast modulation profilometry is proposed based on double color projections.
针对传统调制度轮廓术测量速度较慢的问题，本文提出了彩色双通道投影的调制度轮廓术。
A digital transmission technology based on high - order statistics modulation has been proposed in this article.
提出了一种基于高阶统计量调制的数字传输技术。
Within this frame, we derived a second-order Bragg scattering expression, and developed an analytic solution of hydrodynamic modulation function according to weak hydrodynamic interaction theory.
在本模型框架下，我们推导了二阶布拉格散射的表达式，并根据弱流体动力作用理论推导出流体动力调制函数解析表达式。
In order to decrease the mirror frequency interference, cross interference and inter-modulation interference, double IF (Intermediate frequency) is adopted in the receiver.
为了降低镜频干扰、交调和互调干扰，接收机采用了双中频方案。
For a loss modulation where the threshold carrier density may change, the neglected term may become comparable to the retained first order small quantity.
在损耗调制的情况下，系统变化前后的阈值载流子密度不同，被忽略的二阶小量可能会达到与一阶小量可比拟的程度。
In order to solve the difficulties encountered by underwater remote control, the pseudo-code modulation technology have been introduced into the field of underwater remote control.
为了解决在水下遥控中遇到的困难，把伪码调制技术引入了水下遥控领域。
A digital circuit implementing pulse width modulation controls power delivered in what one can model as a second order or higher order system.
一种数字电路实现的脉冲宽度调制控制在可以将其建模为二阶或更高阶系统的系统中传输的电力。
The orthogonal pulses are adjusted by the optimizer which calculates the parameters based on Least Area Criterion (LAC) before modulation in order to follow the requirements of FCC spectral mask.
调制前由频谱优化器运用最小面积准则（LAC）对正交脉冲的参数进行优化计算并调整，使脉冲频谱符合FCC频谱模板要求。
The effects of group-velocity mismatch and dispersion, third-order nonlinear phase modulation on pulse shape, spectrum distribution and conversion efficiency of second-harmonic pulse were discussed.
详细讨论了群速度失配、群速度色散和三阶非线性相位调制效应对倍频光脉冲波形、光谱及转换效率的影响。
In order to make a research on the software radio, this thesis focuses on key techniques for radio receiver including: DDC technology, the channelization model, modulation and demodulation algorithm.
为了对软件无线电进行探索性研究，本论文主要研究了软件无线电接收机中的部分关键技术：包括数字下变频算法，多通道并行接收的信道化模型以及调制解调部分的实现。
If the modulation order is different, the higher the order is, the worse the performance is, but the transmitting rate is bigger.
随着调制阶数的增加，正交空时分组码的性能越来越差，但传输速率变大；
This paper gives a simple algorithm of quasi-optimal frequency distribution for mobile radio systems, in which the third-order inter-modulation does not appear. The computation results are given.
本文提出了移动电台无三阶互调的准最优频率分配的简化算法，并给出了计算结果。
In order to cut down the power consumption of LCD backlight and maintain the image quality, a modulation algorithm that based on hierarchical tone mapping for LED backlight is proposed.
为了节省液晶显示器背光功耗的同时保持图像质量，提出了基于分层色调映射的LED背光调制算法。
When the second-order and fourth-order dispersions are respectively positive and negative, no modulation instability occurs.
当二阶和四阶色散分别为正和负时，无调制不稳定性；
When the second-order and fourth-order dispersions are respectively positive and negative, no modulation instability occurs.
当二阶和四阶色散分别为正和负时，无调制不稳定性；
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