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均方差mse
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  “均方差(mse)”译为未确定词的双语例句
     In this paper, a multilayer perceptron scheme trained with MSE criterion was proposed for the nonlinear channel equalization.
     该文采用基于多层感知器(MLP)的均方差(MSE)准则实现了一种时变信道的非线性均衡。
短句来源
     A fast simulation annealing(SA)algorithm for the design of diffractive optical elements(DOE) for uniform illumination is presented. The Tsallis statistic and corresponding utility function are introduced into a hybrid algorithm in which the self-iterative and SA algorithms are combined to enhance the efficiency. Compared with traditional SA algorithm,simulated results show that it saves 99% of time to converge the incident energy into a desired region with the same mean square error(MSE).
     介绍了一种适用于均匀照明的衍射光学元件设计的自洽迭代和优化混合的快速模拟退火法,它引入Tsallis正则分布以及相应的效用函数思想,可以在接近1%的时间内得到和传统模拟退火法有着相同均方差(MSE)的理想模拟结果.
短句来源
     Refractive index can be exactly measured between 124 nm and 1 700 nm, and mean square error(MSE) is far less than 1. Such result suggested that the measurement is very precise.
     在124nm到1700nm之间可测量出任意波长的折射率,其均方差(MSE)均远小于1,证明测量结果极其准确.
短句来源
     We introduce the mean square error(MSE),image entropy and high order statistic to analyze defocus models.
     针对常用的离焦退化模型,引入图像均方差(MSE)、图像熵及高阶累积量3种分析评价方法。
短句来源
  相似匹配句对
     All data weve done analysis of variance.
     所有数据进行方差分析。
短句来源
     Sampling Inspection for the Standard Deviation σ on a Normal Population
     正态母体方差σ的抽样检验
短句来源
     All the 5 eases showed (?) ≥(?)
     (?)
短句来源
     ON THE MEAN VALUE AND VARIANCE OF DISTANCE DISTRIBUTION OF NON-LINEAR CODES IN GF(q)
     GF(q)上非线性码的距离分布的值和方差
短句来源
     In this paper, a multilayer perceptron scheme trained with MSE criterion was proposed for the nonlinear channel equalization.
     该文采用基于多层感知器(MLP)方差(MSE)准则实现了一种时变信道的非线性衡。
短句来源
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  mean square error (mse)
The Mean Square Error (MSE) of channel estimation and Bit Error Rate (BER) performance are given and simulation results demonstrate that the iterative algorithm using method B has good performance approaching the ideal condition.
      
Compared with the normal scheme without STBC, 3dB Mean Square Error (MSE) performance gains and fewer restrictions on the length of channel impulse response are demonstrated.
      
We first compute the minimum mean square error (MSE) of the LS channel estimation, and then derive the optimal criteria of the training sequence with respect to the minimum MSE.
      
Compared with WDM, WVF can reduce the mean square error (MSE) by 50% when the signal to noise ration (SNR) is in the range of -15dB to -11dB.
      
A discount factor which minimizes the total Mean Square Error (MSE) of the process output is obtained under the assumption that the process disturbance is either a white noise series or an IMA(1,1) series.
      
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The traditional adaptive algorithm(PG algorithm) has a low computational complexity and is suitable for realtime implementation. However, its convergence of adaptation is not fast and the MSE of the filter coefficient is high, especially in the low input SNR. This paper presented a new variable stepsize adaptive algorithm for a second order adaptive IIR notch filter. It uses the estimate of the instantaneous output signal autocorrelation to control the step size update. This technique can reduce the effect...

The traditional adaptive algorithm(PG algorithm) has a low computational complexity and is suitable for realtime implementation. However, its convergence of adaptation is not fast and the MSE of the filter coefficient is high, especially in the low input SNR. This paper presented a new variable stepsize adaptive algorithm for a second order adaptive IIR notch filter. It uses the estimate of the instantaneous output signal autocorrelation to control the step size update. This technique can reduce the effect of the uncorrelated noise in a low input SNR situation. It provides fast convergence and reduces the MSE of the filter coefficient. In the satellite communication system, the VSLMSL algorithm is applied to NarrowBand interference cancellation. The simulation result shows that under the condition of input SNR=-32.77dB, the output SNR=-6.93dB is got, which demonstrates the robustness and advance of our algorithm.

LMS自适应算法运算简单,但收敛速度较慢,且在低信干比条件下,滤波器系数的均方差(MSE)很大.为此,提出了一种新的变步长自适应算法(VS-LMS-L).该算法用瞬时输出信号的自相关估计值来控制步长的更新,能够在低信干比条件下,减小无关噪声的影响.该算法有着很快的收敛速度和较小的MSE,将它应用于DQPSK调制的卫星通信抗窄带干扰中.仿真表明,在输入信干比为-32.77 dB的条件下,得到了-6.93 dB的输出信干比,信干比改善达到了25.84 dB,显示出了这种算法的鲁棒性和优越性.

A new image denoising method based on wavelet transform is proposed. The coefficients including low frequency and high frequency of wavelet transform are magnified properly before using image denoising method based on wavelet transform. Then the noise in image is eliminated by using local threshold wavelet method. In the last, the coefficients of wavelet transform are reduced aptly and restructured. According to the result of experiment, the given algorithm is much better than the conditional median value...

A new image denoising method based on wavelet transform is proposed. The coefficients including low frequency and high frequency of wavelet transform are magnified properly before using image denoising method based on wavelet transform. Then the noise in image is eliminated by using local threshold wavelet method. In the last, the coefficients of wavelet transform are reduced aptly and restructured. According to the result of experiment, the given algorithm is much better than the conditional median value filtering method and Wiener filtering method. Especially, the MSE of image has been decreased a lot while the PSNR being improved markedly.

 一种新的基于小波变换的图像消噪方法是在运用小波变换对含噪图像进行消噪前,先对图像进行小波级数分解,对其中的低频系数和高频系数进行适当的放大;然后对图像采取局部阈值消噪法进行消噪;最后运用小波变换对所得到的图像小波系数进行适当的缩小并将其重构.仿真实验证明这种方法比一般的诸如中值滤波和维纳滤波等图像消噪方法有很大的改进,特别是图像均方差(MSE)有很大的降低,而图像的信噪比也有较为明显的提高.

Orthogonal Frequency Division Multiplexing (OFDM) with a suitably chosen guard interval is considered as an effective means for eliminating intersymbol interference of high-rate transmission over dispersive channels. Time variance of the channel, however, leads to a loss of subchannel orthogonality, resulting in an interchannel interference (ICI). In this paper, a multilayer perceptron scheme trained with MSE criterion was proposed for the nonlinear channel equalization. The proposed method was used...

Orthogonal Frequency Division Multiplexing (OFDM) with a suitably chosen guard interval is considered as an effective means for eliminating intersymbol interference of high-rate transmission over dispersive channels. Time variance of the channel, however, leads to a loss of subchannel orthogonality, resulting in an interchannel interference (ICI). In this paper, a multilayer perceptron scheme trained with MSE criterion was proposed for the nonlinear channel equalization. The proposed method was used in a realistic low voltage power lines with wideband coupling amplifier, which formed a nonlinear channel for the experiments. The performances of traditionally used linear equalizer and the nonlinear equalizers trained with MSE criterion proposed in this paper are compared. The effectiveness of the proposed approach is demonstrated via experiments by applying it to a PLC OFDM system with time-varying multipath fading channel.

通过添加适当的循环前缀(CP)的正交频分复用(OFDM)技术是一种去除高速通信中符号间干扰的有效方法,但低压电力线作为载波通信通道使用时是一种时变多径信道,采用 OFDM 技术进行高速载波通信时信号的正交性会因此而受到一定程度的破坏,产生子载波间干扰(ICI)。该文采用基于多层感知器(MLP)的均方差(MSE)准则实现了一种时变信道的非线性均衡。为了验证所提出的非线性均衡方法的有效性,选取具有宽带耦合放大器的实际低压电力线通信(PLC)信道作为实验用非线性信道模型。对比了基于 MSE准则的线性和非线性均衡器对系统性能的影响,表明该文采用的非线性均衡方法可以更有效地补偿信道的多径性和时变性造成的影响和改善电力线载波通信系统的性能。

 
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