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This invention relates to MIMO test method in a multi-user MIMO radio communication system including: estimating the channel matrixes of all users at the base station, computing an orthogonal projecting matrix M of the interference matrix of each user and transmitting M to each user periodically, receiving data sent by the base station at the user end and getting the orthogonal projecting matrix M from the received data, transforming the MIMO test of a desired user to the minimum value of a K-element secondary convex function, in which, K expresses the number of sending antennas and getting estimation of the test data by a ball test method.

一种多用户多输入多输出无线通信系统中的MIMO检测方法,包括步骤:在基站估计所有用户的信道矩阵;计算每个用户的干扰用户矩阵的正交投影矩阵M,并将每个用户的正交投影矩阵M定期发送给每个用户;在用户端接收基站发送的数据,并从接收的数据中得到正交投影矩阵M;利用正交投影矩阵M将期望用户的MIMO检测转化为K元二次凸函数的极小值,其中K表示对期望用户而言,发送天线的个数;利用球检测的方法,得到检测数据的估计。

By applying normal testing methods to two different examination papers in this essay, the author obtains the following results: Paper One tallies with normal distribution, indicating that the paper is more reasonable and objective; Paper Two is in the shape of negative skewness and lepmokurtic distribution, showing that the paper is easier than the required and less reasonable.

本文采用数理统计正态性检验法对两份不同的英语试卷考分进行了正态性检验,结果表明:试卷Ⅰ考分的分布服从正态分布,说明其命题难易适当、较为客观、合理;试卷Ⅱ考分的分布呈负偏态、尖峭峰,说明其命题较容易,且不合理。

Applying whitening process and Gram-Schimdt orthogonalization and orthogonal subspace projection, an optimal transformation matrix is designed to minimize the ratio of intra-class distance to inter-class distance while imposing the constraint that different class centers after transformation are along specifically directions that are orthogonal each other.

以线性变换后样本的类内距离与类间距离之比最小作为准则函数,同时加上约束条件使变换后的样本中心沿着特定的正交方向,通过白化变换、Gram-Schimdt正交化和正交子空间投影求解约束准则函数得到最优变换矩阵。

Henan Luoyang Orthopedic Hospital has more than 200 years of history in the music Kwok Ping developed on the basis of Osteopathy.

河南省洛阳正骨医院是在具有200余年历史的平乐郭氏正骨基础上发展起来的,集骨伤医疗、教学、科研、生产为一体的省级中医机构,李长春曾题词赞扬:"医苑奇葩正骨术、美名堪与牡丹齐"。

By the priori estimates and degree theory on the positive cone, we obtain some conditions on the existence and non-existence of positive solution, at the same time, we also discussed the properties of the positive solution.

利用先验估计和正锥上的度理论,给出了正解存在的条件,同时,也讨论正解的一些性质。

The Gaoshawo provenience showed a better growth status in plain region by comparing with the Hangjinqi provenience of the seedling physiological characterization and the medicinal composition content of the annual root.

对一年生直播甘草的分析表明,主根长度与甘草苷含量达到显著正相关水平,根重与甘草酸和甘草苷含量均呈一定程度的正相关;甘草苷含量与甘草酸含量呈极显著正相关关系,说明甘草酸和甘草苷的积累速度具有协同性。

Then, one class of second-order semilinear differential systems with two parameters is considered.

第五章,用锥上的Deimling不动点定理分别讨论了依赖于参数的一阶中立型泛函微分方程和一阶中立型泛函微分系统,导出了一阶中立型泛函微分方程以及一阶中立型泛函微分系统存在两个正周期解,存在一个正周期解以及不存在正周期解的充分条件。

By synchronizing the grid voltage vector with positive sequence, the improved synchronous reference frame method is very simple without the phase locked loop and calculations for sinusoidal function.

通过利用幅值积分信号的选频特性,本文提出了正序、负序基波提取器,该正序、负序基波提取器具有对电网基频偏差不敏感、适用于电压的正序和负序基波分量准确提取的优点。

Taking the inner surface of cylinder as the research object,a deeply study on skew surface topography with wavelet lifting scheme was made.

利用双正交小波的优点,使用提升方案,采用边界对称延拓策略,解决了传统滤波函数在突变处和边界处的畸变效应,并以缸套内表面为例,选用bior4.4双正交小波,证明了提升双正交小波在表面形貌分析中的改善作用。

We present a method to design symmetric orthogonal M-band wavelets with arbitrary regularity by using Grobner basis and syzygy module algorithm in computing algebra to orthogonalize the polyphase matrix.

通过引入计算代数中Grobner基以及合冲模的相关算法,提出对多相位矩阵进行正交化,从而得到了同时具有对称性和任意正则阶的M-带正交小波的高效设计方法。

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