Channel noise

Improved Acquisition Algorithm in Low-voltage Power Line with Channel Noise

低压电力线信道噪声环境下捕获算法的改进

Analysis of HFC access network and its channel noise

HFC接入网技术及其信道噪声分析

Development of a multiple - channel noise measuring system

多路噪声测量系统的研制

Effects of channel noise on metabolic energy cost of action potentials

离子通道噪声对神经元新陈代谢能量的影响

The power line channel noise is the main factor in affecting the power line communication .

电力线信道噪声干扰是影响电力线通信的主要因素。

Age channel noise limited sensitivity

图像通道的有限杂波灵敏度

Research on the Methods of Complexity and Similarity of 2D Engineering Graphic age channel noise limited sensitivity

二维工程图复杂度和相似度方法研究图像通道的有限杂波灵敏度

The Idle Channel Noise of Oversampling Process and its Elimination

过取样的空闲信道噪声及其消除

By changing some parameter , we can estimate present channel noise level and correct error based on the estimation .

与一般的差错控制不同，通过改变一些参数，进行信道状态估计可以检测当前信道噪声水平，为下一步的纠错提供依据。

An end-to-end rate distortion function was established considering the distortion caused by quantization and channel noise .

在综合考虑了由于量化噪声和信道噪声引起的失真等因素后，建立了一个端到端的率失真函数。

We have designed to the atmospheric channel noise Turbo code scheme , after introduced the Turbo code basic theory .

在介绍了Turbo码的基础理论后，设计了对大气信道噪声的Turbo码的编码方案。

This paper studies optimal design to resist the interference of channel noise and non-matching parameters for the synchronization of chaotic systems .

本文研究混沌系统同步的抗信道噪声和参数失配干扰优化设计问题。

The power line channel noise is simulated by MATLAB and the attenuation is simulated through the channel transmission module of FIR filter .

利用MATLAB及用FIR滤波器做信道的传输函数模型对信道噪声和复衰减特性分别进行了建模。

However , because of the background noise and channel noise , the performance of signal process system degrades greatly , which impacts on speech signal quality .

语音通信过程中，由于背景噪声和传输中噪声的干扰，信号处理受到很大的影响，降低了语音质量。

Error multiplication caused by channel noise in eletric transmission system can be demmonstrated by signal to noise ratio between error rate function curve .

误码率与归一化信噪化的函数曲线、可以表征在介质传输系统中，线路噪声所引起的误码增值。

The model uncertainty and the network channel noise are both considered , two-degree freedom controller structure is adopted , and the best tracking performance is obtained .

既考虑了被控对象的模型具有不确定性环节，又考虑了网络双通道中含有高斯白噪声的情况。使用双自由度的反馈控制器结构，得到了最优跟踪性能指标的下确界形式。

Both theoretical analysis and numerical simulations demonstrate that the proposed system is of better security and high precision for recovered source signals even when channel noise is very high .

分析和仿真结果表明，该保密通信系统保密性强和精度高，并在强信道噪声干扰条件下依然有效。

The analysis result indicates that employ of TTA can extend the coverage , decrease RF channel noise factor , and reduce the cost of network construction .

分析结果表明，塔顶放大器可扩大系统覆盖范围，减少射频通道噪声系数，降低组网成本。

An efficient approximation for expressions of the average error probability are developed based on considering the effects of multipath interference , multiple access interference and channel noise .

基于多径干扰、多址干扰和信道噪声的机理分析，推导了计算平均差错概率的有效近似公式。

With channel noise and possible attacks , error protection scheme is one of the important requirements of optimal rate allocation for binary symmetric channel ( BSC ) transmission .

在二进制对称信道传输多媒体信息流时，考虑噪声和攻击的影响，错误保护机制是实现码率最优分配的重要指标。

In underwater chaotic secure communication , the effect of channel noise and parameter mismatch is important , it may or may not allow the utilization of projective synchronization technique .

通过研究信道噪声和系统参数失配对投影同步的影响发现，参数失配带来的影响远大于信道噪声产生的影响，这一性质可以应用于混沌保密通信领域。

Finally , a new approach combining equalization and adaptive equalization with LDPC decoding are proposed to combat the intersymbol interference ( ISI ) and channel noise .

最后，针对噪声干扰和码间串扰问题，研究了LDPC码组合均衡技术以及组合自适应均衡技术。

The speech enhancement system requires neither speech pause detection for noise estimation nor VAD ( voice activity detection ), and overcomes disadvantages existing in single channel noise suppression algorithms .

而且进行噪声估计无需检测语音间隙，无需VAD的运算过程，克服了单信道噪声压缩算法的缺点。

Proposes that using the given soft threshold wavelet de-noising technology removes channel noise , and combining the way of selecting the feedback matrix and making up for difference removes information source noise .

提出采用给定软阈值小波去噪技术去除信道噪声，结合选择矩阵和补差值的方法去除信源噪声，使系统具有良好的抗噪性。

CELP coders , due to its high quality of reconstructed speech and robustness against channel noise , have many applications in mobile communication , encrypted telephone and voice relay service etc .

CELP以其高质量的合成语音及优良的抗噪声和多次转接性能，在移动通信，保密电话和语音中继等中低速率上获得了广泛应用。

The approximation for the multiuser probability of error are obtained by characteristic function method when the channel noise is a combination of additive white Gaussian noise ( AWGN ) and multiple-access interference .

利用特征函数方法分析了在信道中存在加性高斯白噪声和多用户干扰情况下系统的差错特性，给出了平均差错概率的表达式；

A systematic approach is used to analyze the noise in CMOS low noise amplifier ( LNA ), including channel noise and induced gate noise in MOS devices . A new analytical formula for noise figure is proposed .

采用系统研究方法来分析包括MOS器件的沟道噪声和感应栅噪声在内的CMOS低噪声放大器中的噪声，并提出了一个新的噪声系数解析式。

There are inter - symbol interference and multiple access interference , and the basis of channel noise is Gauss white noise . The channel noise will be regarded as Gauss white noise totally in this article .

多个用户之间存在码间干扰和多址干扰，而信道噪声的主要成分是高斯白噪声，研究中将信道噪声完全看作为高斯白噪声。

However , because of some problems in wireless video communication , such as bandwidth request , real-time requirement , power restriction , channel noise , video coding and transmission base on wireless technology become a hot research topic in information science and technology .

然而由于无线视频通信中存在诸如带宽要求、实时性要求、功率限制和信道噪声等问题，面向无线的视频编码与传输技术已成为当今信息科学与技术的前沿课题。

The results show that : The effect of ion channel noise increases firstly and then decreases but the error percentage and standard deviation decreases with the number of ion channels ( which depends on membrane area in the same channel density ) increasing . 4 .

我们发现，当离子通道的数量（或者说在相同的通道密度情况下依赖于膜面积的大小）增加时，离子通道噪声的影响先增加后减小而误差百分比和标准差却是一直降低。