调制的

In this paper,we propose two effective methods,namely the method of overmodulation and harmonic injection,to increase the voltage transfer ratio.

该文提出了两种提高矩阵变换器电压传输比的有效方法，即过调制法和谐波注入法。

An overmodulation algorithm for space vector pulse width modulation suitable for current source converters is proposed.

提出一种适用于电流型变流器(current source conver- ters， CSC)的空间矢量过调制策略。

In this paper, we give a minimum-phase prefilter before the reduced-state equalization in the EDGE system which can improve spectral efficiency.

本文给出了一种用于EDGE系统中减少状态均衡器前端的最小相位滤波器，从而在8PSK调制方式下可以提高频谱有效性。

A new travelling light modulator using single ridged waveguide as microwave circuit is designed.

设计了一种采用单脊波导作为微波电路的新型行波光调制器。

We use semiduplex sending-receiving incorporating RF electrocircuit and FSK modulating in data sending-receiving system.

数字信号发送与接收电路采用半双工收发一体RF数传模块，采用FSK调制方式，具有良好的频率稳定性以及抗干扰能力。

The feasibility study is accomplished using the Fourier Transform method to demodulate the spectropolarimetric information for the new spectropolarimeter based on intensity modulation.

针对强度调制新型偏振光谱仪，研究了基于傅里叶变换法实现偏振光谱信息解调的可行性。

A method by using 8031 single-clip microprocessor to get the syntonical bit information is presented,based on the characteristic of the modulated singal in ascending cosine envelope.

文摘：利用升余弦包络调制信号的特点，即基带信号为升余弦波，接收端可以利用这一包络，从中提取定时信息。

It is a basic fact that earthquake occurrence can be modulated and triggered by the syzygial tide.

郭增建 ，秦保燕朔望潮触发和调制地震的发生已是一个基本事实。

Three approximate methods (called as scaling, rectangle and trapezia methods respectively) for performance analysis of orthogonal space-time block code with M-ary phase shift keying and M-ary quadrature amplitude modulation over flat Rayleigh fading channels are proposed, and their approximate performance expressions are given.

在平坦瑞利衰落信道下，提出了3种正交空时分组码在MPSK和MQAM调制下的近似性能分析方法(分别称为放缩法、矩形法和梯形法)，并给出其近似表达式。

5DB coding gains can be achieved by using trellis-coded 16-ary QAM with respect to uncoded eight-PSK on such a channel condition. The expansion of power spectrum density is also analyzed and calculated.

本文基于卫星通信系统是一个功率受限和带宽受限系统这一特点，研究了带限非线性卫星信道的格型编码调制技术。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。