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    • 1. 发明申请
    • Method and Arrangement for Improved Model Order Selection
    • 改进型号订单选择的方法和布置
    • US20100167679A1
    • 2010-07-01
    • US12601568
    • 2007-05-28
    • Miguel LopezGustav AlmquistTomas AnderssonDennis Hui
    • Miguel LopezGustav AlmquistTomas AnderssonDennis Hui
    • H04B1/10
    • H04L25/0216
    • In a method of enabling model order selection for joint channel synchronization and noise covariance estimation of at least one received signal in a wireless communication network, generating S0 a spatially and temporally stacked signal model by stacking successive samples of temporally adjacent received signal vectors and corresponding training vectors, computing S1 a noise variance matrix for each hypothesized synchronization position, channel length and stacking order, based on the stacked training symbols: determining S2 a best synchronization position for the received signal, based on the stacked training vectors, by jointly determining the best synchronization position for the received signal and estimating a channel length and a stacking order for said signal model based on the stacked training vectors.
    • 在对无线通信网络中的至少一个接收信号进行联合信道同步和噪声协方差估计的模型阶选择的方法中,通过堆叠时间上相邻的接收信号向量的相继采样和对应的训练来产生空间和时间叠加的信号模型S0 向量,基于堆叠的训练符号,计算每个假设的同步位置,信道长度和堆叠顺序的噪声方差矩阵:基于堆叠的训练向量,通过共同确定最佳状态来确定S2接收信号的最佳同步位置 基于叠加的训练向量估计所述信号模型的信道长度和堆叠顺序。
    • 3. 发明授权
    • Method and arrangement for improved model order selection
    • 改进型号订单选择的方法和布置
    • US08229050B2
    • 2012-07-24
    • US12601568
    • 2007-05-28
    • Miguel LopezGustav AlmqvistTomas AnderssonDennis Hui
    • Miguel LopezGustav AlmqvistTomas AnderssonDennis Hui
    • H04L7/00H04K3/00
    • H04L25/0216
    • In a method of enabling model order selection for joint channel synchronization and noise covariance estimation of at least one received signal in a wireless communication network, generating S0 a spatially and temporally stacked signal model by stacking successive samples of temporally adjacent received signal vectors and corresponding training vectors, computing S1 a noise variance matrix for each hypothesized synchronization position, channel length and stacking order, based on the stacked training symbols: determining S2 a best synchronization position for the received signal, based on the stacked training vectors, by jointly determining the best synchronization position for the received signal and estimating a channel length and a stacking order for said signal model based on the stacked training vectors.
    • 在对无线通信网络中的至少一个接收信号进行联合信道同步和噪声协方差估计的模型阶选择的方法中,通过堆叠时间上相邻的接收信号向量的相继采样和对应的训练来产生空间和时间叠加的信号模型S0 向量,基于堆叠的训练符号,计算每个假设的同步位置,信道长度和堆叠顺序的噪声方差矩阵:基于堆叠的训练向量,通过共同确定最佳状态来确定S2接收信号的最佳同步位置 基于叠加的训练向量估计所述信号模型的信道长度和堆叠顺序。
    • 10. 发明授权
    • Proppant mixing and metering system
    • 支撑剂混合和计量系统
    • US09574412B2
    • 2017-02-21
    • US14122685
    • 2012-05-25
    • Hau Nguyen-Phuc PhamMiguel LopezLaurent Coquilleau
    • Hau Nguyen-Phuc PhamMiguel LopezLaurent Coquilleau
    • E21B21/06E21B43/267G05D7/06
    • B65G65/005B65D88/26B65D88/54B65G65/40E21B21/062E21B41/00E21B43/267G05D7/0605G05D7/0617
    • An oilfield material reservoir is disclosed. The oilfield material reservoir has a body, the body having an upper end, a lower end, a sidewall extending between the upper and lower ends, the sidewall defining a recess within the body, an opening defined by the upper end, and a first orifice defined by the lower end. The oilfield material reservoir is also provided with a metering gate connected to the body at the lower end. The metering gate has a base having a second orifice aligned with the first orifice, and a knife gate connected to the base. The second orifice has a substantially trapezoidal shape. The knife gate is configured to slidably cover the second orifice. A method is also disclosed for controlling a discharge rate of oilfield material within the oilfield material reservoir by adjusting a metering open area of the second orifice according to mathematical modeling equations.
    • 公开了一种油田储层。 油田材料储存器具有主体,主体具有上端,下端,在上端和下端之间延伸的侧壁,侧壁限定主体内的凹部,由上端限定的开口,以及第一孔 由下端定义。 油田物料储存器还设置有连接到下端的主体的计量门。 计量门具有底座,其具有与第一孔对准的第二孔,以及连接到底座的刀栅。 第二孔具有大致梯形的形状。 刀门构造成可滑动地覆盖第二孔。 还公开了一种通过根据数学建模方程式调节第二孔口的计量开口面积来控制油田物料储存器内的油田物料的排放速率的方法。