linear modulation

Linear Modulation and Demodulation Method Based on Sampling and Filtering

基于采样和滤波的线性调制解调方法

Loss reduction in the SVPWM linear modulation region

一种减小SVPWM线性调制区损失的方法

Study of countermeasures to deceptive jamming using random linear modulation frequency ratio SAR

随机线性调频斜率SAR抗欺骗干扰方法研究

In this paper , for full response linear modulation signal , an interpolation criterion has been proposed .

本文对全响应线性调制信号，给出了一个插值准则。

Linear modulation in frequency - division multiplexing

频分复用中的线性调制

Time-Frequency Energy Attenuation Factor and Its Application on the Basis of Gauss Linear Modulation Frequency Continuous Wavelet Transform

高斯线调频连续小波变换的时频能量衰减因子方法及其应用

The principle is introduced , the OCT system based on time linear modulation and Michelson interferometer is given with its initial experimental results .

介绍了该技术的理论原理及本实验室建立的基于时域线性调制和光纤迈克耳孙干涉仪的低相干光断层扫描系统并给出了初步的实验结果。

The support vector clustering ( SVC ) algorithm was introduced to detect linear modulation frequency ( LFM ) signal and estimate its parameter .

文中引入支持向量聚类（SVC）算法对多分量LFM信号进行检测和参数估计。

To enhance spectrum efficiency , linear modulation and multicarrier techniques are widely adopted in modem wireless communication systems , these signals be required to amplify linearly .

为了提高频谱利用率，现代无线短波通信广泛采用了非恒包络的线性调制方式和多载波技术，这对短波功率放大器的线性度提出了很高的要求。

This paper focuses on the carrier synchronization of the linear modulation signal in burst-mode transmission , involving two aspects : carrier frequency estimation methods and carrier phase recovery methods .

本文针对突发条件下线性调制信号的载波同步进行研究，主要研究了载波频率估计方法和载波相位恢复方法。

Then , we present the low complexity partially coherent multi user weight / phase optimal joint detection algorithm which is applicable to linear modulation methods with two dimensional constellation .

然后给出了低复杂度最佳联合检测算法用以计算此估计子，而且该算法适用于具有二维星座的线性调制方式；

With continuous development of the telecommunications industry , high-efficiency linear modulation is widely used in modern wireless communication system , the linearity of the transmitter is proposed ever-increasing demands .

随着通信产业的不断发展，现代无线通信系统中广泛采用高频谱效率线性调制方式，对发射机的线性度提出了越来越高的要求。

By the analysis to the unfiltered inverter output voltage , the harmonic characteristics of various multicarriel PWM modulation methods in the linear modulation regions are compared .

通过对未滤波的逆变器输出电压的谐波分析，对不同调制方法在线性调制区的谐波特性进行了比较。

Amplification of linear modulation schemes ,( which exhibit fluctuating envelopes ), by high power amplifiers invariably leads to the generation of distortion and intermodulation products .

用高功率放大器放大线性调制信号（络波动变化），必然会产生失真和互调成分。

The perfect periodicity of field entropy has been destroyed due the linear modulation , When the atom-field coupling coefficient changes slowly , the speed of atom entering the statistical state ;

线形调制使场熵呈现的完美周期性振荡遭到破坏，当原子-场耦合系数变化缓慢时，原子进入统计混合态的速度被减缓；

The reference vector corresponding to basic vector and its role time under linear modulation mode is decided . As well as redundant switches are optimization selected by extreme value method to reduce the switching frequency .

确定了线性调制模式下参考矢量所对应的基本矢量及其作用时间；并提出了极值法对冗余开关状态进行优化选择以降低开关频率。

For the linear modulation , a solution under the small signal approximation to the equations is given . Under the high conversion efficiency , the coupled-wave equations are numerically solved by a procedure .

对于线性调制，给出了瞬态耦合波方程的小信号解，并在高转换效率下，通过编程对耦合波方程进行了数值求解。

The one step linear modulation was realized by the use of calculation amplifier of precedent phase on three steps with two differential circuit , which can bate the disturbance effectively and advance the signal to noise ratio .

对强干扰下的声波信号采用两级差动放大，采用相位超前型三运放二阶电路，实现一级增益线性调节。

Voltage source inverter may work in three different regions according to the value of modulation index ( MI ), linear modulation , overmodulation mode (ⅰ) and mode (ⅱ) . Different region requires different algorithm to produce linear output voltage .

电压源型逆变器，根据最大调制系数（MI）的大小逆变器工作在三种不同区域：线性调制、过调制Ⅰ和过调制Ⅱ区，不同的区域对应着不同的算法以实现线性控制逆变器输出电压。

Main contents of this paper are as follows : The formula of voltage transfer ratio for matrix converter was derived from its operating principle and it has been pointed out that its maximum is 0.866 under normal linear modulation ;

从矩阵变换器的工作原理出发，推导出电压传输比的公式，指出在常规调制情况下，最大为0.866；

In order to make the limited spectrum range accommodate more communication channels , some linear modulation techniques are proposed , such as QAM ( Quadrature Amplitude Modulation ), QPSK ( Quadrature Phase Shift Keying ), etc.

为了让有限的频谱范围能够容纳更多的通信信道，人们提出了一些线性调制技术，如：QAM（quadratureamplitudemodulation）、QPSK（quadraturephaseshiftkeying）等。

The use of spectrum-efficient digital linear modulation techniques and multi-carrier radio communication systems place stringent linearity requirements on the power amplifier , PA , in order to maintain modulation fidelity and avoid interfering with communication systems in the adjacent channels .

随着高频谱效率的数字线性调制体制及多载波技术的广泛应用，为了保证调制保真度及避免干扰相邻信道内通信系统的正常工作，这对功率放大器的线性度提出了更为苛刻的要求。

In this chapter , an algorithm of iterative estimating jamming state information is proposed specially for OFDM systems based on linear modulation so as to gradually improve the correct rate of estimating JSI with the iterative estimation and then improve the performance of the whole system .

本章还专门针对基于线性调制的OFDM系统提出了一种迭代估计干扰状态信息的算法。通过迭代估计干扰状态信息，其准确性逐渐提高，从而也提高了整个系统的抗干扰性能。

Parameter detection method for linear frequency modulation signal based on continuous wavelet transform

基于CWT的线性调频信号参数检测方法

Analysis of Partial Correlation Digital Pulse Compression of Linear Frequency Modulation Signal

LFM信号的部分相关数字脉压分析

Performance Analysis of a Linear Frequency Modulation Auto Radar

线性调频汽车雷达的性能分析

A Technique of Adaptive Compression for Pulse Signal with Linear Frequency Modulation

线性调频脉冲信号的自适应压缩技术

Ultrasonic Liquid Level Meter Using Linear Frequency Modulation Technique

线性调频技术在超声波液位仪中的应用研究

Effect of Doppler Frequency Shift on Linear Frequency Modulation Signal Pulse Compression

多普勒频移对线性调频信号脉冲压缩的影响

An Analysis of a Linear Width Modulation Type Voltage Regulator

一种线性调宽式开关稳压器的分析