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    Active antenna, base station, method for refreshing amplitudes and phases, and method for processing signals
    2.
    发明授权
    Active antenna, base station, method for refreshing amplitudes and phases, and method for processing signals 有权
    有源天线，基站，振幅和相位刷新方法以及处理信号的方法

    公开(公告)号：US08391377B2

    公开(公告)日：2013-03-05

    申请号：US13026914

    申请日：2011-02-14

    Applicant: Yuanrong Zhu ,  Jianjun Chen ,  Zhubiao He ,  Jianfeng Wu ,  Ming Xu ,  Yi Zhang ,  Yuntao Zhu ,  Pinghua He

    Inventor： Yuanrong Zhu ,  Jianjun Chen ,  Zhubiao He ,  Jianfeng Wu ,  Ming Xu ,  Yi Zhang ,  Yuntao Zhu ,  Pinghua He

    IPC: H04L27/00

    CPC classification number: H01Q1/246 ,  H01Q3/267 ,  H01Q3/34 ,  H04B7/0617 ,  H04B7/0842 ,  H04B17/11 ,  H04B17/21

    Abstract: An active antenna, a base station, a method for refreshing the amplitude and phase, and a signal processing method are disclosed to simplify the structure of a phase shifter and guarantee the reliability of the phase shifter. The active antenna or the base station includes an antenna dipole array, a transceiver array, a digital processing unit (DPU), and a transceiving calibration unit. During signal reception, the transceiver demodulates a radio frequency (RF) signal of the antenna dipole into an IQ analog signal, and outputs the IQ analog signal to the DPU; the DPU converts the demodulated IQ analog signal into an IQ digital signal, and performs digital beam forming (DBF) on the IQ digital signal according to the transceiving calibration unit; during signal transmission, the transceiver modulates the IQ analog signal of the DPU into an RF signal, and outputs the RF signal to the antenna dipole; the DPU converts a signal of a base band unit (BBU) into an IQ digital signal in serial/parallel (S/P) mode, and performs DBF on the IQ digital signal according to the transceiving calibration unit.

    Abstract translation: 公开了有源天线，基站，振幅和相位刷新的方法以及信号处理方法，以简化移相器的结构并保证移相器的可靠性。 有源天线或基站包括天线偶极子阵列，收发器阵列，数字处理单元（DPU）和收发校准单元。 在信号接收期间，收发器将天线偶极子的射频（RF）信号解调为IQ模拟信号，并将IQ模拟信号输出到DPU; DPU将解调的IQ模拟信号转换为IQ数字信号，并根据收发校准单元对IQ数字信号进行数字波束形成（DBF）; 在信号传输期间，收发器将DPU的IQ模拟信号调制成RF信号，并将RF信号输出到天线偶极子; DPU将基带单元（BBU）的信号以串行/并行（S / P）模式转换为IQ数字信号，并根据收发校准单元对IQ数字信号执行DBF。

    Determining Frequency Errors in a Multi-Carrier Receiver
    6.
    发明申请
    Determining Frequency Errors in a Multi-Carrier Receiver 有权
    确定多载波接收机中的频率误差

    公开(公告)号：US20150358192A1

    公开(公告)日：2015-12-10

    申请号：US14110875

    申请日：2012-03-14

    Applicant: Thomas Nilsson ,  Jianjun Chen ,  Amit Singh

    Inventor： Thomas Nilsson ,  Jianjun Chen ,  Amit Singh

    IPC: H04L27/26 ,  H04B1/10

    CPC classification number: H04L27/2657 ,  H04B1/1081 ,  H04L25/0222 ,  H04L27/0014 ,  H04L27/2672 ,  H04L27/2675 ,  H04L27/2695

    Abstract: Individual multipath components of digital data symbols sent from a transmitter on at least two carrier frequencies generated from a common clock signal, are received (401) with individual delays and processed by a receiver unit having at least two fingers. Successive channel estimates are determined (402) from received symbols for each finger and each carrier, and an estimated frequency error is determined (404) for each finger and each carrier. A linear equation system is constructed (405), in which each determined frequency error is expressed as a function of a first variable indicative of frequency drift and a second variable indicative of frequency error caused by Doppler effect. The equation system is solved (406) to provide a solution with estimates of the first and second variables for each finger, and an estimated frequency drift is determined (407) from the solution and utilized (408) as feedback signal for adjusting receiver clock frequency.

    Abstract translation: 在从公共时钟信号产生的至少两个载波频率上从发射机发送的数字数据符号的单个多径分量被接收（401）并具有单独的延迟，并由具有至少两个手指的接收机单元进行处理。 从每个手指和每个载体的接收符号确定连续信道估计（402），并且为每个手指和每个载波确定估计的频率误差（404）。 构造线性方程组（405），其中每个确定的频率误差被表示为指示频率漂移的第一变量的函数，以及指示由多普勒效应引起的频率误差的第二变量。 求解方程系统（406）以提供每个手指的第一和第二变量的估计的解，并且从解中确定估计的频率漂移（407），并将其用作用于调整接收机时钟频率的反馈信号（408） 。

    Epipremnum plant named ‘UFM10’
    7.
    植物专利
    Epipremnum plant named ‘UFM10’ 有权
    Epipremnum植物名为“UFM10”

    公开(公告)号：USPP20930P2

    公开(公告)日：2010-04-13

    申请号：US12316063

    申请日：2008-12-08

    Applicant: Richard Henny ,  Jianjun Chen

    Inventor： Richard Henny ,  Jianjun Chen

    IPC: A01H5/00

    CPC classification number: A01H5/00

    Abstract: A new Epipremnum plant particularly distinguished by having compact and dense growth habit, dark green leaves that are wider, in relation to length, than other cultivars, vines with large diameters, and vines with shorter internodes, is disclosed.

    Abstract translation: 公开了一种新颖的Epipremnum植物，其特征在于具有致密和密集的生长习性，深绿色的叶子相对于其他栽培品种，长度大的葡萄藤和具有较短节间的葡萄藤而言，其长度相对于长度更宽。

    Systems and methods for statistics over complex objects
    8.
    发明申请
    Systems and methods for statistics over complex objects 审中-公开
    复杂对象统计的系统和方法

    公开(公告)号：US20060230016A1

    公开(公告)日：2006-10-12

    申请号：US11091983

    申请日：2005-03-29

    Applicant: Conor Cunningham ,  Jianjun Chen

    Inventor： Conor Cunningham ,  Jianjun Chen

    IPC: G06F17/30

    CPC classification number: G06F16/24549 ,  G06F16/24542

    Abstract: The subject invention relates to systems and methods that automatically create, update, and use statistics over complex objects within a database query processor. A system is provided that facilitates employment of statistics in connection with database optimization. The system includes a component that receives information relating to database performance and an optimization component that automatically identifies, from the information, a minimal set of statistics to employ in a query. A loader dynamically loads and employs the set of statistics during a query optimization process. The optimization component can employ the statistics over computed columns, whereby the columns can be computed from persisted and non-persisted data.

    Abstract translation: 本发明涉及对数据库查询处理器内的复杂对象自动创建，更新和使用统计信息的系统和方法。 提供了一个便于使用与数据库优化相关的统计数据的系统。 该系统包括接收与数据库性能相关的信息的组件以及从信息中自动识别在查询中使用的最少统计信息的优化组件。 加载器在查询优化过程中动态加载并采用该组统计信息。 优化组件可以对计算列使用统计信息，从而可以从持久化和非持久化数据计算列。

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