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    Beamforming with Imperfect Channel State Information
    1.
    发明申请
    Beamforming with Imperfect Channel State Information 有权
    波导形态与不完美的频道状态信息

    公开(公告)号：US20080070564A1

    公开(公告)日：2008-03-20

    申请号：US11532488

    申请日：2006-09-15

    申请人： Ye Li ,  Anthony C.K. Soong ,  Yinggang Du ,  Jianmin Lu

    发明人： Ye Li ,  Anthony C.K. Soong ,  Yinggang Du ,  Jianmin Lu

    IPC分类号： H04Q7/20

    CPC分类号： H04B7/0452 ,  H04B7/0439 ,  H04B7/0617

    摘要： Disclosed herein is a system and method for downlink beamforming that takes into account imperfect channel state information (CSI) at the transmitter when determining the steering vector used in the beamforming process. The steering vector is calculated to increase the ratio of the average power of a desired signal component to the sum of the interference power of other wireless terminals, referred to as the signal-to-leakage ratio. By accounting for imperfect CSI when calculating the steering vector, the bit-error rate for a given signal-to-noise ratio is decreased. Also disclosed is a power allocation method that improves performance of the system by increasing the signal-to-interference-plus-noise ratio for all of the wireless terminals currently communicating with the base station. The power allocation similarly decreases the bit-error rate for a given signal-to-noise ratio, especially at high signal-to-noise ratios.

    摘要翻译： 这里公开了一种用于下行链路波束成形的系统和方法，其在确定在波束形成处理中使用的导向向量时考虑到发射机处的不完美信道状态信息（CSI）。 计算导向矢量以增加所需信号分量的平均功率与其它无线终端的干扰功率之和的比率，称为信号与泄漏比。 通过在计算导向矢量时考虑不完善的CSI，给定信噪比的误码率降低。 还公开了一种功率分配方法，其通过增加当前与基站通信的所有无线终端的信号与干扰加噪声比来提高系统的性能。 功率分配类似地降低给定信噪比的比特误码率，特别是在高信噪比下。

    Beamforming with imperfect channel state information
    2.
    发明授权
    Beamforming with imperfect channel state information 有权
    波束形成与不完美的信道状态信息

    公开(公告)号：US08112038B2

    公开(公告)日：2012-02-07

    申请号：US11532488

    申请日：2006-09-15

    申请人： Ye Li ,  Anthony C. K. Soong ,  Yinggang Du ,  Jianmin Lu

    发明人： Ye Li ,  Anthony C. K. Soong ,  Yinggang Du ,  Jianmin Lu

    IPC分类号： H04B1/00

    CPC分类号： H04B7/0452 ,  H04B7/0439 ,  H04B7/0617

    摘要： Disclosed herein is a system and method for downlink beamforming that takes into account imperfect channel state information (CSI) at the transmitter when determining the steering vector used in the beamforming process. The steering vector is calculated to increase the ratio of the average power of a desired signal component to the sum of the interference power of other wireless terminals, referred to as the signal-to-leakage ratio. By accounting for imperfect CSI when calculating the steering vector, the bit-error rate for a given signal-to-noise ratio is decreased. Also disclosed is a power allocation method that improves performance of the system by increasing the signal-to-interference-plus-noise ratio for all of the wireless terminals currently communicating with the base station. The power allocation similarly decreases the bit-error rate for a given signal-to-noise ratio, especially at high signal-to-noise ratios.

    摘要翻译： 这里公开了一种用于下行链路波束成形的系统和方法，其在确定在波束形成处理中使用的导向向量时考虑到发射机处的不完美信道状态信息（CSI）。 计算导向矢量以增加所需信号分量的平均功率与其它无线终端的干扰功率之和的比率，称为信号与泄漏比。 通过在计算导向矢量时考虑不完善的CSI，给定信噪比的误码率降低。 还公开了一种功率分配方法，其通过增加当前与基站通信的所有无线终端的信号与干扰加噪声比来提高系统的性能。 功率分配类似地降低给定信噪比的比特误码率，特别是在高信噪比下。

    CABLE MANAGEMENT AND IDENTIFICATION DEVICE
    3.
    发明申请
    CABLE MANAGEMENT AND IDENTIFICATION DEVICE 有权
    电缆管理和识别装置

    公开(公告)号：US20120222882A1

    公开(公告)日：2012-09-06

    申请号：US13037815

    申请日：2011-03-01

    申请人： Yinggang Du ,  Julia Heard ,  Scott Lauffer

    发明人： Yinggang Du ,  Julia Heard ,  Scott Lauffer

    IPC分类号： H02G3/04 ,  F16L3/08

    CPC分类号： H02G1/00

    摘要： A cable management device is provided, which includes a first leg and a second leg connected by a connecting crown member. A first protrusion extends from the first leg. A second protrusion extends from the second leg. The first leg and the second leg both include an aperture. The cable management device includes passageway defined by an inner-surface of the first leg, an inner-surface of the second leg, and an inner-surface of the connecting crown member. The passageway is operable to hold a cable.

    摘要翻译： 提供了一种电缆管理装置，其包括通过连接冠部构件连接的第一腿部和第二腿部。 第一突起从第一腿延伸。 第二突起从第二腿延伸。 第一条腿和第二条腿都包括一个孔。 电缆管理装置包括由第一腿的内表面，第二腿的内表面和连接冠部构件的内表面限定的通道。 通道可操作以保持电缆。

    Method, apparatus and system for forming time division duplex multi-input multi-output downlink beams
    7.
    发明授权
    Method, apparatus and system for forming time division duplex multi-input multi-output downlink beams 有权
    用于形成时分双工多输入多输出下行链路波束的方法，装置和系统

    公开(公告)号：US08264982B2

    公开(公告)日：2012-09-11

    申请号：US12825099

    申请日：2010-06-28

    申请人： Luxi Yang ,  Daofeng Xu ,  Yinggang Du

    发明人： Luxi Yang ,  Daofeng Xu ,  Yinggang Du

    IPC分类号： H04B7/02 ,  H04W24/00 ,  H04L5/14

    CPC分类号： H04B7/0639 ,  H04B7/0417 ,  H04B7/0634

    摘要： In a method for forming TDD MIMO downlink beams, a BS receives an index of a codebook element from a mobile terminal. The codebook element refers to a codebook element whose correlation value has a greatest modulus value among correlation values that are calculated by the mobile terminal and are about correlation between the codebook element and a channel corresponding to a non-transmitting antenna of the mobile terminal. The BS calculates a channel vector corresponding to the non-transmitting antenna of the mobile terminal. The BS calculates channel vectors of the transmitting antennas of the mobile terminal, and performs SVD to determine a best transmitting precoding matrix.

    摘要翻译： 在形成TDD MIMO下行链路波束的方法中，BS从移动终端接收码本元素的索引。 码本元素是指码本元素，其相关值在由移动终端计算的相关值中具有最大的模数值，并且涉及码本元素与对应于移动终端的非发送天线的信道之间的相关性。 BS计算与移动终端的非发送天线相对应的信道向量。 BS计算移动终端的发送天线的信道向量，并执行SVD以确定最佳发送预编码矩阵。

    Method, apparatus and system for forming time division duplex multi-input multi-output downlink beams
    10.
    发明授权
    Method, apparatus and system for forming time division duplex multi-input multi-output downlink beams 有权
    用于形成时分双工多输入多输出下行链路波束的方法，装置和系统

    公开(公告)号：US08355351B2

    公开(公告)日：2013-01-15

    申请号：US12825065

    申请日：2010-06-28

    申请人： Luxi Yang ,  Daofeng Xu ,  Yinggang Du

    发明人： Luxi Yang ,  Daofeng Xu ,  Yinggang Du

    IPC分类号： H04J3/00

    CPC分类号： H04B7/0408 ,  H04B7/0404 ,  H04B7/0413 ,  H04B7/0617 ,  H04B7/0658

    摘要： A method, an apparatus, and a system for forming Time Division Duplex (TDD) Multi-Input Multi-Output (MIMO) downlink beams are disclosed herein. The method includes: generating a transmitting beam of a first data stream according to a Maximum Rate Transmission (MRT) criterion; and generating transmitting beams of other data streams except the first data stream, wherein the transmitting beams of other data streams are confined in a null space of the transmitting beam of the first data stream. Through the embodiments of the present invention, the Base Station obtains precise Partial Channel State Information by using only reciprocity without requiring feedback information, and thus the calculation is simplified and the rate of data streams is improved.

    摘要翻译： 本文公开了一种用于形成时分双工（TDD）多输入多输出（MIMO）下行链路波束的方法，装置和系统。 该方法包括：根据最大速率传输（MRT）标准产生第一数据流的发射波束; 以及生成除第一数据流之外的其他数据流的发送波束，其中其他数据流的发送波束被限制在第一数据流的发送波束的零空间中。 通过本发明的实施例，基站通过仅使用互易而不需要反馈信息来获得精确的部分信道状态信息，从而简化了计算，并提高了数据流的速率。