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    OUTER LOOP POWER CONTROL FOR WIRELESS COMMUNICATIONS
    62.
    发明申请
    OUTER LOOP POWER CONTROL FOR WIRELESS COMMUNICATIONS 有权
    无线通信的外环功率控制

    公开(公告)号：US20110159899A1

    公开(公告)日：2011-06-30

    申请号：US12979983

    申请日：2010-12-28

    申请人： Chang-Soo Koo ,  Sudheer A. Grandhi ,  Stephen E. Terry

    发明人： Chang-Soo Koo ,  Sudheer A. Grandhi ,  Stephen E. Terry

    IPC分类号： H04B7/005 ,  H04B15/00

    CPC分类号： H04W52/12 ,  H04W52/10 ,  H04W52/143 ,  H04W52/241 ,  H04W52/36 ,  H04W52/362 ,  H04W52/50

    摘要： A base station configured for outer loop power control receives an uplink dedicated channel transmission from a wireless transmit/receive unit. The base station transmits transmit power control commands in response to the received uplink channel transmission and determines if the wireless transmit/receive unit is in a discontinuous transmission mode. The base station adjusts a target SIR based on which transmission mode for the wireless transmit/receive unit is detected. The value for the transmit power control command is derived from the adjusted target SIR.

    摘要翻译： 配置用于外环功率控制的基站从无线发射/接收单元接收上行链路专用信道传输。 基站响应于所接收的上行链路信道传输发送发射功率控制命令，并确定无线发射/接收单元是否处于不连续传输模式。 基站根据检测到无线发送/接收单元的发送模式来调整目标SIR。 发送功率控制命令的值从调整后的目标SIR导出。

    QUALITY CONTROL SCHEME FOR MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) SYSTEMS
    63.
    发明申请
    QUALITY CONTROL SCHEME FOR MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) SYSTEMS 有权
    用于多输入多输出（MIMO）正交频分多址（OFDM）系统的质量控制方案

    公开(公告)号：US20110096857A1

    公开(公告)日：2011-04-28

    申请号：US12983491

    申请日：2011-01-03

    申请人： Chang-Soo Koo ,  Robert Lind Olesen

    发明人： Chang-Soo Koo ,  Robert Lind Olesen

    IPC分类号： H04K1/10

    CPC分类号： H04B7/0417 ,  H04B17/336 ,  H04L1/0002 ,  H04L1/0026 ,  H04L5/0023 ,  H04L5/0046 ,  H04L5/006 ,  H04L5/0064 ,  H04L27/2601 ,  Y02D50/10

    摘要： A method and apparatus for optimizing the system capacity of an Orthogonal Frequency Division Multiplexing (OFDM) system that uses with Multiple-Input Multiple-Output (MIMO) antennas. In a receiver, a target quality of service (QoS) metric and reference data rate are set. The target QoS metric may be set to a predetermined value and/or may be adjusted dynamically with respect to packet error rate (PER) by a slow outer-loop control processor. The QoS of received signals are compared to the target QoS. Depending on the comparison, the receiver generates a channel quality indicator (CQI) which is sent to the transmitter. The CQI is a one or two bit indicator which indicates to the transmitter to disable, adjust or maintain data transmission rates of particular sub-carriers, groups of sub-carriers per transmit antenna, or groups of sub-carriers across all transmit antennas. At the transmitter, the transmitted data rate is disabled, adjusted or maintained.

    摘要翻译： 一种用于优化与多输入多输出（MIMO）天线一起使用的正交频分复用（OFDM）系统的系统容量的方法和装置。 在接收机中，设置目标服务质量（QoS）度量和参考数据速率。 可以将目标QoS度量设置为预定值和/或可以通过慢速外部环路控制处理器相对于分组错误率（PER）动态地调整。 将接收到的信号的QoS与目标QoS进行比较。 根据比较，接收机产生发送到发射机的信道质量指示符（CQI）。 CQI是一个或两个比特指示符，其向发射机指示禁用，调整或维持特定子载波，每个发射天线的子载波组或跨所有发射天线的子载波组的数据传输速率。 在发射机处，传输的数据速率被禁用，调整或维护。

    METHOD AND APPARATUS FOR SINGULAR VALUE DECOMPOSITION OF A CHANNEL MATRIX
    66.
    发明申请
    METHOD AND APPARATUS FOR SINGULAR VALUE DECOMPOSITION OF A CHANNEL MATRIX 失效
    用于信道矩阵的单值分解的方法和装置

    公开(公告)号：US20100014617A1

    公开(公告)日：2010-01-21

    申请号：US12566194

    申请日：2009-09-24

    申请人： Chang-Soo Koo ,  Robert Lind Olesen

    发明人： Chang-Soo Koo ,  Robert Lind Olesen

    IPC分类号： H04L27/06

    CPC分类号： H04B7/0417 ,  G06F17/16 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/0634 ,  H04B7/0663 ,  H04L25/0208 ,  H04L25/0248 ,  H04L27/2647

    摘要： A method and apparatus for decomposing a channel matrix in a wireless communication system are disclosed. A channel matrix H is generated for channels between transmit antennas and receive antennas. A Hermitian matrix A=HHH or A=HHH is created. A Jacobi process is cyclically performed on the matrix A to obtain Q and DA matrixes such that A=QDAQH. DA is a diagonal matrix obtained by singular value decomposition (SVD) on the A matrix. In each Jacobi transformation, real part diagonalization is performed to annihilate real parts of off-diagonal elements of the matrix and imaginary part diagonalization is performed to annihilate imaginary parts of off-diagonal elements of the matrix after the real part diagonalization. U, V and DH matrixes of H matrix are then calculated from the Q and DA matrices. DH is a diagonal matrix comprising singular values of the H matrix.

    摘要翻译： 公开了一种在无线通信系统中分解信道矩阵的方法和装置。 为发射天线和接收天线之间的信道生成信道矩阵H. 创建Hermitian矩阵A = HHH或A = HHH。 在矩阵A上循环执行Jacobi过程以获得Q和DA矩阵，使得A = QDAQH。 DA是通过在A矩阵上的奇异值分解（SVD）获得的对角矩阵。 在每个雅可比变换中，执行实部对角化以湮灭矩阵的非对角元素的实部，并且执行虚部对角化​​以在实部对角化之后湮灭矩阵的非对角元素的虚部。 然后从Q和DA矩阵计算H矩阵的U，V和DH矩阵。 DH是包括H矩阵的奇异值的对角矩阵。

    Method and apparatus for singular value decomposition of a channel matrix
    68.
    发明申请
    Method and apparatus for singular value decomposition of a channel matrix 失效
    用于信道矩阵的奇异值分解的方法和装置

    公开(公告)号：US20060245513A1

    公开(公告)日：2006-11-02

    申请号：US11392025

    申请日：2006-03-29

    申请人： Chang-Soo Koo ,  Robert Olesen

    发明人： Chang-Soo Koo ,  Robert Olesen

    IPC分类号： H04B7/02

    CPC分类号： H04B7/0417 ,  G06F17/16 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/0634 ,  H04B7/0663 ,  H04L25/0208 ,  H04L25/0248 ,  H04L27/2647

    摘要： A method and apparatus for decomposing a channel matrix in a wireless communication system are disclosed. A channel matrix H is generated for channels between transmit antennas and receive antennas. A Hermitian matrix A=HHH or A=HHH is created. A Jacobi process is cyclically performed on the matrix A to obtain Q and DA matrixes such that A=QDAQH. DA is a diagonal matrix obtained by singular value decomposition (SVD) on the A matrix. In each Jacobi transformation, real part diagonalization is performed to annihilate real parts of off-diagonal elements of the matrix and imaginary part diagonalization is performed to annihilate imaginary parts of off-diagonal elements of the matrix after the real part diagonalization. U, V and DH matrixes of H matrix are then calculated from the Q and DA matrices. DH is a diagonal matrix comprising singular values of the H matrix.

    摘要翻译： 公开了一种在无线通信系统中分解信道矩阵的方法和装置。 为发射天线和接收天线之间的信道生成信道矩阵H. 产生Hermitian矩阵A = H H H或A = HH H H。 在矩阵A上循环地执行Jacobi过程以获得Q和D A A矩阵，使得A = Q D A A H H O。 D A A是通过在A矩阵上的奇异值分解（SVD）获得的对角矩阵。 在每个雅可比变换中，执行实部对角化以湮灭矩阵的非对角元素的实部，并且执行虚部对角化​​以在实部对角化之后湮灭矩阵的非对角元素的虚部。 然后从Q矩阵和D矩阵矩阵计算H矩阵的U，V和D H H矩阵。 D H H是包括H矩阵的奇异值的对角矩阵。

    Outer loop power control for wireless communications
    70.
    发明授权
    Outer loop power control for wireless communications 有权
    用于无线通信的外环功率控制

    公开(公告)号：US08577407B2

    公开(公告)日：2013-11-05

    申请号：US12979983

    申请日：2010-12-28

    申请人： Chang-Soo Koo ,  Sudheer A. Grandhi ,  Stephen E. Terry

    发明人： Chang-Soo Koo ,  Sudheer A. Grandhi ,  Stephen E. Terry

    IPC分类号： H04B17/00 ,  H04B1/00 ,  H04B7/00

    CPC分类号： H04W52/12 ,  H04W52/10 ,  H04W52/143 ,  H04W52/241 ,  H04W52/36 ,  H04W52/362 ,  H04W52/50

    摘要： A base station configured for outer loop power control receives an uplink dedicated channel transmission from a wireless transmit/receive unit. The base station transmits transmit power control commands in response to the received uplink channel transmission and determines if the wireless transmit/receive unit is in a discontinuous transmission mode. The base station adjusts a target SIR based on which transmission mode for the wireless transmit/receive unit is detected. The value for the transmit power control command is derived from the adjusted target SIR.

    摘要翻译： 配置用于外环功率控制的基站从无线发射/接收单元接收上行链路专用信道传输。 基站响应于所接收的上行链路信道传输发送发射功率控制命令，并确定无线发射/接收单元是否处于不连续传输模式。 基站根据检测到无线发送/接收单元的发送模式来调整目标SIR。 发送功率控制命令的值从调整后的目标SIR导出。