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    METHOD AND SYSTEM FOR INTERFERENCE REDUCTION
    23.
    发明申请
    METHOD AND SYSTEM FOR INTERFERENCE REDUCTION 有权
    用于干扰减少的方法和系统

    公开(公告)号：US20110076954A1

    公开(公告)日：2011-03-31

    申请号：US12961741

    申请日：2010-12-07

    申请人： Daniel Wee ,  Hang Li ,  Weidong Yang ,  Guanghan Xu

    发明人： Daniel Wee ,  Hang Li ,  Weidong Yang ,  Guanghan Xu

    IPC分类号： H04B1/00

    CPC分类号： H04W16/18 ,  H04B1/7103 ,  H04B2201/709709 ,  H04J11/005 ,  H04J13/16 ,  H04W16/10 ,  H04W28/18 ,  H04W72/00 ,  H04W72/08 ,  H04W88/08 ,  H04W88/12

    摘要： A method and system for interference reduction for telecommunication systems are disclosed. The system comprises a base station control device (BCD) for configuring one or more parameters for operating one or more base stations (BSs), a first BS covering a first cell having one or more mobile terminals therein, a second BS covering a second cell neighboring to the first cell and sharing a predetermined frequency band with the first cell, wherein one or more radio frames constructed for communications between the first BS and any mobile terminal of the first cell and one or more radio frames constructed for communications between the second BS and any mobile terminal of the second cell are distinguishable by defining different channel configuration sets having one or more operation parameters, wherein the parameters includes a training sequence, a spreading code, and a channel observation window position.

    摘要翻译： 公开了用于电信系统的干扰减少的方法和系统。 该系统包括用于配置用于操作一个或多个基站（BS）的一个或多个参数的基站控制设备（BCD），覆盖其中具有一个或多个移动终端的第一小区的第一BS，覆盖第二小区的第二BS 与所述第一小区相邻并且与所述第一小区共享预定频带，其中为所述第一小区和所述第一小区的任何移动终端之间的通信而构造的一个或多个无线电帧以及为所述第二小区之间的通信而构造的一个或多个无线电帧 并且通过定义具有一个或多个操作参数的不同的信道配置集来区分第二小区的任何移动终端，其中参数包括训练序列，扩展码和信道观察窗口位置。

    Techniques for generating and detecting a physical random access channel signal in a wireless communication system
    24.
    发明授权
    Techniques for generating and detecting a physical random access channel signal in a wireless communication system 有权
    用于在无线通信系统中生成和检测物理随机接入信道信号的技术

    公开(公告)号：US07843970B2

    公开(公告)日：2010-11-30

    申请号：US12338338

    申请日：2008-12-18

    申请人： Weidong Yang

    发明人： Weidong Yang

    IPC分类号： H04J3/00

    CPC分类号： H04L27/2647 ,  H04L27/2655

    摘要： A technique for detecting a physical random access channel (PRACH) signal includes demasking a received signal with a demasking signal. In this case, the demasking removes a PRACH root index component from the received signal. A fast Fourier transform is performed on the demasked received signal to provide a time-domain signal. At least three peaks of the time-domain signal from all antennas are then power combined. Finally, a determination is made as to whether a preamble index for the PRACH signal matches a known preamble index based on an output power of the time-domain signal at the at least three peaks.

    摘要翻译： 一种用于检测物理随机存取信道（PRACH）信号的技术包括用去屏蔽信号去除接收的信号。 在这种情况下，拆卸从接收到的信号中去除了PRACH根索引分量。 对被解除的接收信号执行快速傅立叶变换以提供时域信号。 然后将来自所有天线的时域信号的至少三个峰值进行功率合并。 最后，确定基于在至少三个峰值处的时域信号的输出功率，PRACH信号的前导码索引是否与已知的前导码索引匹配。

    Alignment target with designed in offset
    26.
    发明授权
    Alignment target with designed in offset 有权
    对准目标设计在偏移

    公开(公告)号：US07230705B1

    公开(公告)日：2007-06-12

    申请号：US11075228

    申请日：2005-03-07

    申请人： Weidong Yang ,  Roger R. Lowe-Webb ,  John D. Heaton ,  Guonguang Li

    发明人： Weidong Yang ,  Roger R. Lowe-Webb ,  John D. Heaton ,  Guonguang Li

    IPC分类号： G01B11/00 ,  G01B11/14 ,  H01L21/76 ,  H01L23/544

    CPC分类号： G03F7/70633 ,  G03F9/7076

    摘要： An alignment target includes periodic patterns on two elements. The alignment target includes two locations, at least one of which has a designed in offset. In one embodiment, both measurement locations have a designed in offset of the same magnitude but opposite directions. For example, two separate overlay patterns that are mirror images of each other may be used. Alternatively, the magnitudes and/or directions may vary between the measurement locations. The radiation that interacts with the measurement locations is compared. The calculated difference is extremely sensitive to any alignment error. If the difference between the patterns is approximately zero, the elements are properly aligned. When an alignment error is introduced, however, calculated difference can be used to determine the error. In one embodiment, the alignment target is modeled to determine the alignment error. In another embodiment, additional overlay patterns with additional reference offsets are used to determine the alignment error.

    摘要翻译： 对齐目标包括两个元素上的周期性图案。 对准目标包括两个位置，其中至少一个具有偏移设计。 在一个实施例中，两个测量位置具有相同幅度但相反方向偏移的设计。 例如，可以使用作为彼此的镜像的两个单独的覆盖图案。 或者，幅度和/或方向可以在测量位置之间变化。 比较与测量位置相互作用的辐射。 计算的差异对任何对准误差都非常敏感。 如果图案之间的差异大约为零，则元素将被正确对齐。 然而，当引入对准误差时，可以使用计算出的差异来确定误差。 在一个实施例中，对准目标被建模以确定对准误差。 在另一个实施例中，使用具有附加参考偏移的附加覆盖图案来确定对准误差。

    Method and system for interference assessment and reduction in a wireless communication system
    27.
    发明授权
    Method and system for interference assessment and reduction in a wireless communication system 失效
    无线通信系统中干扰评估和减少的方法和系统

    公开(公告)号：US07068977B1

    公开(公告)日：2006-06-27

    申请号：US10269225

    申请日：2002-10-11

    申请人： Weidong Yang ,  Guanghan Xu

    发明人： Weidong Yang ,  Guanghan Xu

    IPC分类号： H04B17/00

    CPC分类号： H04B17/0087 ,  H04B7/0842 ,  H04B17/345

    摘要： A method and system is disclosed for reducing interference in a wireless communication system utilizing an antenna array. The antenna array uses one or more signal channels for communicating with one or more mobile terminals. First, at least one channel is assigned as an empty channel in which no desired signal is carried so as to provide a representation of all relevant interference. Since the spatial characteristics of the empty channel and the regular signal channels should be very similar, the spatial signature of the signal channels is analyzed based on the interference received on the empty channel and the desired signals received on at least one signal channel. The analyzed spatial signature is then used for reducing the interference on all signal channels.

    摘要翻译： 公开了一种用于减少利用天线阵列的无线通信系统中的干扰的方法和系统。 天线阵列使用一个或多个信号信道与一个或多个移动终端进行通信。 首先，至少一个信道被分配为没有所需信号被携带的空信道，以提供所有相关干扰的表示。 由于空信道和规则信道的空间特征应该非常相似，所以基于在空信道上接收的干扰和在至少一个信道上接收到的期望信号来分析信道的空间特征。 然后分析的空间特征用于减少所有信号通道的干扰。

    Positioning two elements using an alignment target with a designed offset
    28.
    发明授权
    Positioning two elements using an alignment target with a designed offset 有权
    使用具有设计偏移的对齐目标定位两个元素

    公开(公告)号：US07046361B1

    公开(公告)日：2006-05-16

    申请号：US10116964

    申请日：2002-04-04

    申请人： Weidong Yang ,  Roger R. Lowe-Webb ,  John D. Heaton

    发明人： Weidong Yang ,  Roger R. Lowe-Webb ,  John D. Heaton

    IPC分类号： G01B11/00

    CPC分类号： G03F9/7084 ,  G03F7/70633 ,  G03F9/7076

    摘要： An alignment system for aligning two elements includes an alignment target with periodic patterns on each element. The alignment target includes two locations, at least one of which has a designed in offset. If desired, both locations may have designed in offsets of the same magnitude but in opposite directions. The diffraction patterns produced at the two locations are compared. If the difference between the patterns is at a minimum, the elements are properly aligned. When an alignment error is introduced, however, the calculated difference can be used to determine the error. In another embodiment, bands in the moiré fringes from the different locations may be compared to determine the alignment error. The two elements may then be moved relative to each other to minimize the alignment error. Thus, the alignment target may advantageously be used in any alignment system, such as an exposure tool.

    摘要翻译： 用于对准两个元件的对准系统包括在每个元件上具有周期性图案的对准目标。 对准目标包括两个位置，其中至少一个具有偏移设计。 如果需要，两个位置可以设计成相同幅度的偏移但是在相反的方向上。 比较在两个位置产生的衍射图。 如果图案之间的差异最小，则元素将被正确对齐。 然而，当引入对准误差时，可以使用计算出的差异来确定误差。 在另一个实施例中，可以比较来自不同位置的莫尔条纹中的条带以确定对准误差。 然后可以相对于彼此移动两个元件以使对准误差最小化。 因此，对准目标可以有利地用于任何对准系统，例如曝光工具。

    Method and apparatus for using an alignment target with designed in offset
    29.
    发明授权
    Method and apparatus for using an alignment target with designed in offset 有权
    使用偏移设计的对准对象的方法和装置

    公开(公告)号：US06982793B1

    公开(公告)日：2006-01-03

    申请号：US10116863

    申请日：2002-04-04

    申请人： Weidong Yang ,  Roger R. Lowe-Webb ,  John D. Heaton ,  Guoguang Li

    发明人： Weidong Yang ,  Roger R. Lowe-Webb ,  John D. Heaton ,  Guoguang Li

    IPC分类号： G01B11/27

    CPC分类号： G03F7/70633 ,  G03F9/7076

    摘要： An alignment target includes periodic patterns on two elements. The alignment target includes two locations, at least one of which has a designed in offset. In one embodiment, both measurement locations have a designed in offset of the same magnitude but opposite directions. For example, two separate overlay patterns that are mirror images of each other may be used. Alternatively, the magnitudes and/or directions may vary between the measurement locations. The radiation that interacts with the measurement locations is compared. The calculated difference is extremely sensitive to any alignment error. If the difference between the patterns is approximately zero, the elements are properly aligned. When an alignment error is introduced, however, calculated difference can be used to determine the error. In one embodiment, the alignment target is modeled to determine the alignment error. In another embodiment, additional overlay patterns with additional reference offsets are used to determine the alignment error.

    摘要翻译： 对齐目标包括两个元素上的周期性图案。 对准目标包括两个位置，其中至少一个具有偏移设计。 在一个实施例中，两个测量位置具有相同幅度但相反方向偏移的设计。 例如，可以使用作为彼此的镜像的两个单独的覆盖图案。 或者，幅度和/或方向可以在测量位置之间变化。 比较与测量位置相互作用的辐射。 计算的差异对任何对准误差都非常敏感。 如果图案之间的差异大约为零，则元素将被正确对齐。 然而，当引入对准误差时，可以使用计算出的差异来确定误差。 在一个实施例中，对准目标被建模以确定对准误差。 在另一个实施例中，使用具有附加参考偏移的附加覆盖图案来确定对准误差。

    Encoder with an alignment target
    30.
    发明授权
    Encoder with an alignment target 失效
    具有对准目标的编码器

    公开(公告)号：US06958819B1

    公开(公告)日：2005-10-25

    申请号：US10116855

    申请日：2002-04-04

    申请人： John D. Heaton ,  Weidong Yang ,  Roger R. Lowe-Webb

    发明人： John D. Heaton ,  Weidong Yang ,  Roger R. Lowe-Webb

    IPC分类号： G01B11/14 ,  G01D5/347

    CPC分类号： G01D5/34746

    摘要： An encoder uses an alignment target that includes periodic patterns on the movable element and the stationary element. The alignment target may include at least two measurement locations, each location having a different offset between the periodic pattern on the movable element with respect to the periodic pattern on the stationary element. Alternatively, two measurements using different polarization states may be made at one location. When the periodic patterns on the movable element and the stationary element are aligned, the difference between the two measurements will produce a minimum, i.e., approximately a zero value plus noise. By counting the minima, the precise position of the movable element with respect to the stationary element can be determined. The resolution of the encoder may be further increased using reference measurements.

    摘要翻译： 编码器使用在可移动元件和固定元件上包括周期性图案的对准目标。 对准目标可以包括至少两个测量位置，每个位置在可移动元件上的周期性图案之间相对于静止元件上的周期性图案具有不同的偏移。 或者，可以在一个位置进行使用不同极化状态的两个测量。 当可移动元件和静止元件上的周期性图案对准时，两个测量之间的差将产生最小值，即近似零值加噪声。 通过计算最小值，可以确定可移动元件相对于静止元件的精确位置。 可以使用参考测量进一步增加编码器的分辨率。