估计

Focusing on the problem that the performance of channel estimation is influenced by spatial correlation in multiple input multiple output systems,a parametrical channel estimation method based on estimating multipath parameters is proposed.

针对多输入多输出系统中信道空域相关影响信道估计性能的问题，提出了一种基于多径参数估计的信道估计方法。

In the first part, first of all, we have a priori estimate for solution of the reaction-diffusion equation with initial condition and Dirichret boundary conditions. Then, we construct a semidiscrete Legendre pseudospectral scheme, and have a priori estimate for approximate solution. We discuss the asymptotic stability of approximate solution. At last, we get a error estimation on large time for solution of the semidiscrete system.

首先，对此类方程初边值问题的解进行了先验估计；然后建立方程半离散的Legendre拟谱格式，并对近似解进行了先验估计，讨论了近似解的渐近稳定性；最后，得到了半离散系统解的长时间误差估计。

Chen Mingfeng estimates, website of large pilfer edition (pilfer edition exceeds work of hundreds of VIP) conservative estimation amount is in 10 thousand to 100 thousand; Medium or small pilfer edition website estimates know exactly about sth hundred numerous, do not have law statistic almost; The amount of edition of pilfer of website of every pilfer edition is little criterion a few, many pilfer edition a few the tuber of stemona, thousands of; Especially a few when red work it is station of every pilfer edition has more turn post, be like " stars goes " etc.

陈明峰估计，大型盗版网站(盗版超过几百部VIP作品)保守估计数量在1万至10万；中小型盗版网站估计有数百万之众，几乎无法统计；每个盗版网站盗版的数量少则几十部，多则盗版几百部、数千部；特别是一些当红的作品更是每家盗版站都有转帖，如《星辰变》等。

Based on the least squared means of the calving months a divison of...

在取遗传力真值为0.10～0.35时，这个估计值的大样本标准误为0.03～0.08，说明估计值的精确性较低，亦即本资料样本对遗传力估计来说仍然偏小。

Then we introduced transition probability kernel for the hidden state process and the confederated process. In the deep research, we found that some similar parameters of state transition probability, observation symbol probability and initial state probability were involved in the transition probability kernel of the confederated process. So we can complete the training of traditional HMM parameters by training the transition probability kernel of the confederated process. To our surprised, we got the consistency of transition probability kernel of the confederated process. Meanwhile, we proved the rationality and reliability of the parameters estimation equations under the classical B-W algorithm.

然后对联合过程的转移概率核展开研究，我们根据过程的取值空间的不同，引入了隐状态空间和联合过程空间上的转移概率核，研究中发现在联合空间上的转移概率核包含了在一般的隐马氏模型的参数估计中的所有类似的三组参数(转移概率，观测概率和初始概率)，因此对传统的隐马氏模型的参数训练我们可以通过联合过程的转移概率核的训练来完成，更令我们惊奇的是联合过程的转移概率核还具有一致性；同时对于Baum提出的经典的B-W算法给出的关于模型的参数重估计公式，证明了它的合理性和可靠性，即模型经过重估计后的参数能够满足给定的单观测序列在模型下发生的概率是单调递增的。

To reduce the computational burden under the parametric model of mixed-spectrum, the proposed method decouples the estimation for parameters of sinusoids and of AR clutter.

该方法利用混合谱参数化模型，通过对正弦参数估计及AR杂波参数估计的解耦处理，降低了谱估计过程的计算复杂度。

Based on the new cumulant matrix, a simple iterative BSS algorithm is proposed, which requires neither centering nor sphering of the data and separates the mixed signals directly.

本文定义了一种新的累积量矩阵，对这种累积量矩阵的计算实际上只需要对二阶累积量进行估计，因而相对于常规的累积量矩阵的估计，该方法计算简单，并且有可能达到较小的估计偏差。

This paper studies the question of estimation of parameters in the mixture of two normal distributions.

对两混合正态分布的参数估计问题进行了研究，在传统的极大似然估计的基础上运用EM算法来求解参数估计。

Regional anomaly datum in a point is estimated according to the data in some information points around some point.

根据某点周围若干个信息点上的重观测数据估计出该点处的区域异常值，而且这种估计是在满足线性、无偏、最小估计方差条件下求得的。

The proposed algorithm can deal with Carrier Frequency Offset and Sampling Frequency Offset estimation with the presence of frequency dependent In-phase and Quadrature-phased imbalance. Then frequency dependent I/Q imbalance and channel response are jointly estimated.

该联合估计算法能在存在频率相关性I/Q失配的情形下准确获得载波频率偏差和采样频率偏差的估计，并获得频率相关性I/Q失配和信道冲击响应的联合估计信息。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。