线性失真

线性失真对OFDM传输信号质量的影响分析

Analysis of the Effect of Linear Distortion on OFDM Signal

以Amplify音效为例，介绍了采用基于自适应滤波器的系统辨识的方法建立线性失真音效的数学模型的过程。

Secondly , the modeling of amplify effect is taken as an example for modeling of linear distortion effects using adaptive filter .

SC-FDE根据频域信道估计的结果，采用频域逆滤波器来补偿信道的线性失真。

SC-FDE uses frequency domain inverse filter to offsetting the linear distortion of the channel based on the channel estimation in frequency domain .

结合数字调幅广播（DRM）系统，分别对相位和幅度的线性失真作了具体分析和仿真，提出了DRM系统滤波器设计的指标要求。

Based on DRM system , linear distortion of phase and amplitude is analyzed and simulated respectively , and the target of filter design in the DRM system is also given .

针对严重的线性失真和适度的非线性失真的非线性信道，在Volterra非线性系统和非线性信道Wiener模型基础之上，研究了级联结构的自适应均衡器，并推导出自适应算法，对其进行仿真。

After the analysis of Volterra nonlinear system and nonlinear channel Wiener modeling with severe linear and mild nonlinear distortion , conjunction 's structure equalizer was studied , and adaptive algorithm was deduced .

调频通道的线性失真对群频信号的影响

The influence of FM channel linear distortion on Group-Frequency signals

数据信号在盲信道传播，将在接收端引入线性失真，导致误码率。

When data signals transmit through blind channel , the channel will lead a linear distort at a receiver .

数字相关器在动态范围、线性失真，零点漂移等多方面优于模拟相关器。

Digital correlator is superior to analog correlator in dynamic characteristics , linear distortion , zero drift and so on .

群时延是系统和网络的一项重要传输特性，它表征系统和网络的线性失真。

The group delay , which characterizes the linear distortion of the system and network , is an important transmission characteristic .

本文针对严重线性失真、轻度非线性失真的信道提出了一种简单实用的非线性信道判决反馈均衡器。

A simple and useful decision feedback equalizer used for non-linear channels with severe linear distortion and mild non-linear distortion is proposed .

本文论述了调频通道的线性失真（幅频特性失真）对群频信号（调制信号）的影响&使群频信号产生了幅频特性失真和振幅非线性失真。

This paper describes the influence of FM channel linear distortion ( amplitude-frequency characteristics distortion ) on group-frequency signals ( modulated signal ), which makes the group-frequency signals produce amplitude-frequency charateristics distortion and amplitude non linear distortion .

分析了失真产生的原因，又通过具体电路的具体波形分析了线性失真和非线性失真的区别与联系；

Not only the cause of giving rise to the distortion is analyzed , but also the distinction and connection between the linear distortion and the non linear distortion by studying the concrete waves of the concrete circuits .

其中，调频广播因为线性失真小，无串扰，高保真度和信噪比，支持立体声广播、多路广播等众多突出优点，获得了长足的发展。

Because of its many outstanding advantages such as low linear distortion , no crosstalk , high fidelity and high signal to noise ratio , and its ability to support stereo broadcast and multicast , FM radio gains rapid development .

基于查找表的功放线性预失真方法研究

LUT method of predistortion compensate for linearization of HPA

如果采用完全理想条件和线性几何失真方法来标定系统，则会影响测量精度。

The measurement accuracy will be low if the ideal or linear conditions are used to calibrate the system .

该设计码本的算法进而被扩充为一个具有分段线性特性的失真算法。

The codebook design algorithm is then extended to a distortion measure that has piecewise-linear characteristics .

传统的线性放大器虽然失真很小，但是效率不高，而且需要大面积的散热片。

Although the distortion of traditional linear amplifier is small , the efficiency is not high , and traditional linear amplifier requires a large area of the heat sink .

线性功率放大器有失真小、线性好等优点，但是其损耗大，效率低。

Linear power amplifier has low distortion and good linearity , but it has high loss and so low efficiencies .

针对传统小波变换不具有线性相位，相位失真会引起图像边缘的失真的情况，提出了一种新的基于双正交小波变换的医学图像融合方法。

This dissertation utilize biorthogonal wavelet transform merge medical image for avoiding phase distortion by conventional orthogonal wavelet transform , and introduce a new fusion method .

恒流源负载的思路取自胆管在恒流源负载的条件下可以接近完美的线性（接近零失真）。

The idea behind the constant current load is that with a constant current load , the valve is almost perfectly linear ( near ZERO distortion ) .

分析了线性功率变换器失真的原因，改进了功率变换器的设计方法，使其消除交越失真。

By analyzing the reason of the distortion of the linear power converter , the design method of the power converter is improved , which eliminates the crossover distortion .

本文分析并设计了一应用在UMTS频段（2.11~2.17GHz）的低噪声高线性放大器，用来放大WCDMA前馈线性功放中的失真信号。

In this paper , a low noise high linearity amplifier which works in UMTS frequencies is analyzed and designed , it is used to amplify the distorted signal in WCDMA feed-forward linear power amplifier system .