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    Systems and methods for transforming SQL syntax trees into relational algebra representations
    1.
    发明申请
    Systems and methods for transforming SQL syntax trees into relational algebra representations 审中-公开
    将SQL语法树转换为关系代数表示的系统和方法

    公开(公告)号：US20050177556A1

    公开(公告)日：2005-08-11

    申请号：US10776895

    申请日：2004-02-10

    申请人： Jun Fang ,  Aakash Kambuj ,  Evgueni Zabokritski ,  Honggang Zhang ,  Peter Carlin

    发明人： Jun Fang ,  Aakash Kambuj ,  Evgueni Zabokritski ,  Honggang Zhang ,  Peter Carlin

    IPC分类号： G06F7/00 ,  G06F17/30

    CPC分类号： G06F16/24526

    摘要： The SQL Algebrizer of the present invention comprises a plurality of algorithms to “algebrize” SQL Trees to QP Algebra using an approach that is more consistent and much more efficient than typical algebrizers. More specifically, the Algebrizer of the present invention processes a SQL Tree using a reduced number of recursive depth-first passes by performing multiple operations in a single pass. Furthermore, the Algebrizer of the present invention also performs the operation of constant folding in this single, multi-operation pass so that the QP, upon receiving the QP Algebra, needs not perform this operation at all.

    摘要翻译： 本发明的SQL代理器包括使用比典型的代数器更一致和更有效的方法来将“SQL树”组合到QP代数的多种算法。 更具体地说，本发明的代理者通过在单程中执行多个操作，使用减少数量的递归深度优先遍历来处理SQL树。 此外，本发明的代理还在该单次多操作遍中进行恒定折叠的操作，使得在接收到QP代数时，QP根本不需要执行该操作。

    Robust channel estimation in communication systems
    4.
    发明授权
    Robust channel estimation in communication systems 有权
    通信系统中的鲁棒信道估计

    公开(公告)号：US08369425B2

    公开(公告)日：2013-02-05

    申请号：US12054028

    申请日：2008-03-24

    申请人： Ziquan Bai ,  Hong Wei Kong ,  Honggang Zhang ,  Ya Jing ,  Xu Zhao ,  Danxun Shen

    发明人： Ziquan Bai ,  Hong Wei Kong ,  Honggang Zhang ,  Ya Jing ,  Xu Zhao ,  Danxun Shen

    IPC分类号： H04K1/10

    CPC分类号： H04L25/0226 ,  H04L5/0048 ,  H04L27/2613 ,  H04L27/2626 ,  H04L2025/03426

    摘要： An apparatus for archiving robust channel estimation in a communication system includes a training sequence generator to generate a training sequence. A formatter inserts the training sequence to a frame. A transmitting module is employed to transmit the frame. The training sequence generator further includes a symbol generator to generate a plurality of training symbols satisfying a predetermined constraint such that the training symbols are insensitive to synchronization error and a training sequence forming unit that forms the training sequence from the training symbols generated by the training symbol generator.

    摘要翻译： 用于在通信系统中归档鲁棒信道估计的装置包括产生训练序列的训练序列发生器。 格式化程序将训练序列插入到一个帧中。 采用发送模块来发送帧。 训练序列生成器还包括符号生成器，用于生成满足预定约束的多个训练符号，使得训练符号对同步误差不敏感，训练序列形成单元从训练符号生成的训练符号形成训练序列 发电机。

    ROBUST CHANNEL ESTIMATION IN COMMUNICATION SYSTEMS
    5.
    发明申请
    ROBUST CHANNEL ESTIMATION IN COMMUNICATION SYSTEMS 有权
    通信系统中的稳健信道估计

    公开(公告)号：US20080310531A1

    公开(公告)日：2008-12-18

    申请号：US12054028

    申请日：2008-03-24

    申请人： Ziquan Bai ,  Hong Wei Kong ,  Honggang Zhang ,  Ya Jing ,  Xu Zhao ,  Danxun Shen

    发明人： Ziquan Bai ,  Hong Wei Kong ,  Honggang Zhang ,  Ya Jing ,  Xu Zhao ,  Danxun Shen

    IPC分类号： H04K1/10

    CPC分类号： H04L25/0226 ,  H04L5/0048 ,  H04L27/2613 ,  H04L27/2626 ,  H04L2025/03426

    摘要： An apparatus for archiving robust channel estimation in a communication system includes a training sequence generator to generate a training sequence. A formatter inserts the training sequence to a frame. A transmitting module is employed to transmit the frame. The training sequence generator further includes a symbol generator to generate a plurality of training symbols satisfying a predetermined constraint such that the training symbols are insensitive to synchronization error and a training sequence forming unit that forms the training sequence from the training symbols generated by the training symbol generator.

    摘要翻译： 用于在通信系统中归档鲁棒信道估计的装置包括产生训练序列的训练序列发生器。 格式化程序将训练序列插入到一个帧中。 采用发送模块来发送帧。 训练序列生成器还包括符号生成器，用于生成满足预定约束的多个训练符号，使得训练符号对同步误差不敏感，训练序列形成单元从训练符号生成的训练符号形成训练序列 发电机。

    Fast and Flexible Communication System Simulation
    6.
    发明申请
    Fast and Flexible Communication System Simulation 审中-公开
    快速灵活的通信系统仿真

    公开(公告)号：US20090037163A1

    公开(公告)日：2009-02-05

    申请号：US11830187

    申请日：2007-07-30

    申请人： Hong Wei Kong ,  Honggang Zhang ,  Ya Jing ,  Ziquan Bai

    发明人： Hong Wei Kong ,  Honggang Zhang ,  Ya Jing ,  Ziquan Bai

    IPC分类号： G06F9/44

    CPC分类号： G06F9/455

    摘要： A simulation system for a communication system includes a user interface to receive user definition and system configuration parameters of a simulation configuration file that includes a plurality of data structures representing various functional modules of the simulated communication system. A model library is provided to store different implementation models corresponding to different communication standards for each of the functional modules. A parsing module accesses the model library according to the user definition and system configuration parameters to obtain the appropriate implementation model for each of the functional modules, and generates a simulated system program based on the selected implementation models such that the simulated system program is reconfigurable to different implementations and communication standards. A simulation engine runs the simulated system program to simulate the simulated communication system. A simulated system program generation system is also described.

    摘要翻译： 用于通信系统的模拟系统包括用于接收模拟配置文件的用户定义和系统配置参数的用户界面，该模拟配置文件包括表示模拟通信系统的各种功能模块的多个数据结构。 提供模型库以存储对应于每个功能模块的不同通信标准的不同实现模型。 分析模块根据用户定义和系统配置参数访问模型库，以获得每个功能模块的适当实现模型，并且基于所选择的实现模型生成模拟系统程序，使得模拟系统程序可重新配置为 不同的实现和通信标准。 模拟引擎运行模拟系统程序来模拟仿真通信系统。 还描述了一种模拟系统程序生成系统。