噪声方差估计,noise variance estimation
1)noise variance estimation噪声方差估计
1.Effects ofnoise variance estimation on the LDPC decoding performance are investigated.仿真结果表明,该文提出的噪声方差估计方法,较好地完成了噪声方差未知时LDPC迭代译码的辅助工作,使噪声方差未知时的系统误比特率性能恶化小于0。
2.A fast and reliable white-noise variance estimation algorithm is proposed.提出了一种高效稳健的白噪声方差估计算法,算法首先对连续的两帧视频进行差分运算以获得更多的亮度平坦区域,进而在差分图像和原始图像中以一定的准则寻找亮度平坦块,最终从这些平坦块中估计出噪声的方差。
3.Considering the de-noising influence ofnoise variance estimation.信号消噪是小波变换的重要应用,介绍了小波消噪的基本原理及其主要步骤,以及软阀值消噪方法及软阀值规则的选取,最后利用实验仿真信号和现场实测汽轮机振动信号,并考虑噪声方差估计的对消噪的影响,分析比较了各种软阀值选取方式的消噪效果,从而得到软阀值选取方式的有价值的规律和原则,利用最佳软阀值处理后的小波系数重建信号,分析结果表明该方法能够最有效地消除噪声。
英文短句/例句
1.A blind channel estimation method based on the code structure of LDPC codes基于LDPC码结构的盲信道噪声方差估计方法
2.Noise variance estimation based on inter-scale correlation of image coefficient of wavelet transform基于小波系数层间相关性的图像噪声方差估计
3.Dynamic compensation based on noise variance estimation and model reference for sensors基于噪声方差估计和模型参考的传感器动态补偿
4.Study on Methods of DOA Estimation Based on Array Calibration in Complex Noise;复杂噪声背景下基于阵列误差校正的DOA估计的方法研究
5.Interacting Multiple Models Algorithm with Wavelet-Based Unknown Measurement Noise Estimation基于小波估计量测噪声方差的交互多模型跟踪算法
6.Adaptive time delay estimation based on least mean square Sigmoid error with the presence of impulsive noisesα稳定噪声下最小均方Sigmoid误差自适应时间延迟估计
7.Noise estimation for Cramer-Rao Bound analysis of multi-scale matching多分辨率匹配CRB分析中噪声估计方法
8.Rapid DOA estimation for nonuniform linear array in the presence of colored noise fields色噪声下非均匀线阵的快速方位估计
9.An iteration Phase Noise Estimator for OFDM SystemOFDM系统相位噪声的迭代估计方法
10.Estimation of Various Noise Factors from Allan Variance by Subsection Method采用分段法估算Allan方差中的各噪声系数
11.Estimating the Standard Deviation of Noise via Controlled Function基于控制函数估计图像噪音的标准方差
12.Image denoising of coal dust based on improved minimum mean square error estimation改进最小均方误差估计的煤尘图像去噪
13.An Active Edge Detection Method Based on Noise Estimation of Differential Image基于微分图象噪声估计的主动型边界检测方法
14.Semi-Parametric Estimation Methods on Long-Memory Processes with Added Noise附加噪声长记忆过程的半参数估计方法研究
15.Study on Theory and Method of Chirp Parameter Estimation in Noise Environments;噪声背景下chirp信号参数估计理论与方法研究
16.Study on Time Delay Estimation Methods and Applications in the Presence of Impulsive Noise;脉冲噪声下时间延迟估计方法及应用的研究
17.Estimation of Signal Parameter in Nonstationary Environments and Colored Noise;非平稳、色噪声环境下的参数估计方法研究
18.Study on Theory and Method of Chirp Signal Time-delay Estimation in Noise Environments;噪声背景下chirp信号时延估计理论与方法研究
相关短句/例句
background noise variance estimation背景噪声方差估计
3)system noise covariance estimate系统噪声方差估计
4)Blind Gaussian noise variance estimate高斯盲噪声方差估计
5)channel noise variance estimation信道噪声方差估计
1.In this paper, by analyzing the blind channel estimation algorithm based on binary LDPC codes with BPSK modulation, we propose achannel noise variance estimation algorithm that utilizes the characteristics of the QPSK modulation and the structure of nonbinary LDPC in the AWGN channel.在LDPC码的迭代软判决译码算法中需要利用信道的噪声方差,通过对二元LDPC码、采用BPSK调制的盲信道噪声方差估计方法的分析,提出了在AWGN信道条件下,采用QPSK调制的基于多元LDPC码结构的盲信道噪声方差估计算法,将估计的结果应用到多元LDPC码的译码算法中。
6)noise estimation噪声估计
1.Speech enhancement withnoise estimation in bark domain;一种基于巴克域噪声估计的语音增强算法
2.During thenoise estimation,the estimation of its spectrum is updated by tracking the speech-absent frames.噪声估计过程中通过跟踪带噪语音帧来更新噪声估计。
3.After capturing theneighborhoods of discontinuity in the image and acquiring their spatial features based onnoise estimation,adaptive optimal.它首先通过噪声估计捕捉图象中可能存在边界的邻域，然后获取邻域中有关边界的空间参数，由此选择最佳微分滤波算子对相应邻域进行滤波，以获取边界点。
延伸阅读
方差估计值分子式：CAS号：性质：由样本测定值计算的方差S2，称为样本方差，S2是总体方差σ2的无偏估计值。因此，S2又称为方差估计值或估计方差。S和σ分别为样品测定值的标准差和样本总体呈正态分布的标准差。
