专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2005101772A1 CALIBRATION OF TRANSMIT AND RECEIVE CHAINS IN A MIMO COMMUNICATION SYSTEM 审中-公开
标题翻译： MIMO通信系统中发射和接收链的校准
公开(公告)号：WO2005101772A1
公开(公告)日：2005-10-27
申请号：PCT/US2005/008739
申请日：2005-03-15
申请人： QUALCOMM INCORPORATED , INANOGLU, Hakan
发明人： INANOGLU, Hakan
IPC分类号： H04L25/03
CPC分类号： H04L25/03343 , H04B17/14 , H04B17/21 , H04L25/0204 , H04L25/0226
摘要： Techniques for calibrating the transmit and receive chains at a wireless entity are described. For a pre-calibration, N first overall gains for a receiver unit and N transmitter units in the transmit chain are obtained, where . Each first overall gain is for a combined response for the receiver unit and the associated transmitter unit. N second overall gains for a transmitter unit and N receiver units in the receive chain are also obtained. Each second overall gain is for a combined response for the transmitter unit and the associated receiver unit. The gain of each transmitter unit and the gain of each receiver unit are determined based on the first and second overall gains. At least one correction matrix is then derived based on the gains of the transmitter and receiver units and is used to account for the responses of these units.
摘要翻译：描述了在无线实体处校准发送和接收链的技术。对于预校准，获得发射链中的接收机单元和N个发射机单元的N个第一总增益，其中。每个第一整体增益用于接收器单元和相关联的发射器单元的组合响应。也可以获得接收链中的发射机单元和N个接收机单元的N个第二总体增益。每个第二总增益用于发射机单元和相关联的接收机单元的组合响应。基于第一和第二总增益来确定每个发射机单元的增益和每个接收机单元的增益。然后基于发射器和接收器单元的增益导出至少一个校正矩阵，并且用于考虑这些单元的响应。

2. 发明申请

WO2010124298A3 I/Q IMBALANCE ESTIMATION AND COMPENSATION FOR A TRANSMITTER AND A RECEIVER 审中-公开
标题翻译： I / Q发射机和接收机的不平等估计和补偿
公开(公告)号：WO2010124298A3
公开(公告)日：2011-04-21
申请号：PCT/US2010032458
申请日：2010-04-26
申请人： QUALCOMM INC , METREAUD LEON T , INANOGLU HAKAN , ZHANG XIANGDONG , CHEN ZHENQI
发明人： METREAUD LEON T , INANOGLU HAKAN , ZHANG XIANGDONG , CHEN ZHENQI
IPC分类号： H04L27/00 , H04L27/36 , H04L27/38
CPC分类号： H04L27/0014 , H04L27/364 , H04L27/3863 , H04L2027/0016
摘要： Techniques for performing inphase/quadrature (I/Q) imbalance estimation and compensation are described. In one exemplary design, I/Q imbalances in a receiver may be estimated by (i) applying a continuous wave signal at different frequencies to the receiver and (ii) processing I and Q input samples from the receiver to determine I/Q imbalances at different frequencies. In another exemplary design, I/Q imbalances may be estimated by (i) downconverting an input RF signal with an LO signal that is offset in frequency from the input RF signal, (ii) transforming I and Q input samples from the receiver to the frequency domain to obtain I and Q symbols, and (iii) determining I/Q imbalances based on the I and Q symbols. In one exemplary design, I/Q imbalances may be corrected by compensating for frequency-dependent and frequency-independent I/Q imbalances separately. I/Q imbalances in a transmitter may also be estimated and compensated.
摘要翻译：描述了执行同相/正交（I / Q）不平衡估计和补偿的技术。在一个示例性设计中，可以通过（i）将不同频率的连续波信号应用于接收机来估计接收机中的I / Q不平衡，以及（ii）处理来自接收机的I和Q输入样本以确定I / Q不平衡不同的频率。在另一示例性设计中，I / Q不平衡可以通过以下方式来估计：（i）利用从输入RF信号偏移频率的LO信号来下变频输入RF信号，（ii）将I和Q输入样本从接收机变换到频域以获得I和Q符号，以及（iii）基于I和Q符号来确定I / Q不平衡。在一个示例性设计中，可以通过分别补偿频率相关和频率独立的I / Q不平衡来校正I / Q不平衡。也可以估计和补偿发射机中的I / Q不平衡。

3. 发明申请

WO2009088528A9 I/Q IMBALANCE ESTIMATION AND CORRECTION IN A COMMUNICATION SYSTEM 审中-公开
标题翻译：通信系统中的I / Q不平等估计和校正
公开(公告)号：WO2009088528A9
公开(公告)日：2009-09-24
申请号：PCT/US2008067166
申请日：2008-06-16
申请人： QUALCOMM INC , INANOGLU HAKAN , METREAUD LEON , WALLACE MARK S , ZHANG XIANGDONG
发明人： INANOGLU HAKAN , METREAUD LEON , WALLACE MARK S , ZHANG XIANGDONG
IPC分类号： H04L27/38
CPC分类号： H04L27/0014 , H04L27/2626 , H04L27/2647 , H04L27/364 , H04L27/3863 , H04L2027/0016 , H04L2027/0022 , H04L2027/0024

4. 发明申请

WO2009088528A2 I/Q IMBALANCE ESTIMATION AND CORRECTION IN A COMMUNICATION SYSTEM 审中-公开
标题翻译：通信系统中的I / Q不平衡估计和校正
公开(公告)号：WO2009088528A2
公开(公告)日：2009-07-16
申请号：PCT/US2008/067166
申请日：2008-06-16
申请人： QUALCOMM Incorporated , INANOGLU, Hakan , METREAUD, Leon , WALLACE, Mark S. , ZHANG, Xiangdong
发明人： INANOGLU, Hakan , METREAUD, Leon , WALLACE, Mark S. , ZHANG, Xiangdong
IPC分类号： H04L27/38
CPC分类号： H04L27/0014 , H04L27/2626 , H04L27/2647 , H04L27/364 , H04L27/3863 , H04L2027/0016 , H04L2027/0022 , H04L2027/0024

5. 发明申请

WO2007134273A3 FREQUENCY HOPPING OF PILOT TONES 审中-公开
标题翻译：频频H OF。。。。。。。。。。。
公开(公告)号：WO2007134273A3
公开(公告)日：2008-02-28
申请号：PCT/US2007068842
申请日：2007-05-14
申请人： QUALCOMM INC , INANOGLU HAKAN
发明人： INANOGLU HAKAN
IPC分类号： H04L27/26 , H04B17/00
CPC分类号： H04L5/0048 , H04B1/715 , H04B17/24 , H04L5/0007
摘要： Presented are systems and methods for selecting a subband for a pilot tone in a communication system and transmitting and receiving data units that include pilot tones. In one embodiment, a method is presented comprising determining a channel parameter and selecting a subband for the pilot tone based upon the channel parameter and a subband previously assigned to the pilot tone. In another embodiment, the subband is incremented if the channel parameter meets a condition. In another embodiment, a method is present for transmitting multiple data units each having a pilot tone, wherein successively transmitted data units have pilot tones associated with incremented subbands. In another embodiment, the further incremented subband of each further subsequent data unit is the subband of the previously transmitted data unit incremented by a predetermined interval.
摘要翻译：提出了用于在通信系统中选择导频音的子带的系统和方法，以及发送和接收包括导频音调的数据单元。在一个实施例中，提出了一种方法，包括：基于信道参数和先前分配给导频音的子带，确定信道参数并为导频音选择子带。在另一个实施例中，如果信道参数满足条件，则子带增加。在另一个实施例中，存在用于发送每个具有导频音调的多个数据单元的方法，其中连续发送的数据单元具有与增加的子带相关联的导频音调。在另一个实施例中，每个另外的后续数据单元的进一步增加的子带是先前发送的数据单元的子带以预定间隔递增。

6. 发明申请

WO2006053340A2 EIGENVALUE DECOMPOSITION AND SINGULAR VALUE DECOMPOSITION OF MATRICES USING JACOBI ROTATION 审中-公开
标题翻译：使用JACOBI旋转的矩阵分解和奇异值分解
公开(公告)号：WO2006053340A2
公开(公告)日：2006-05-18
申请号：PCT/US2005/041783
申请日：2005-11-15
申请人： QUALCOMM INCORPORATED , KETCHUM, John W. , WALTON, J. Rodney , WALLACE, Mark S. , HOWARD, Steven J. , INANOGLU, Hakan
发明人： KETCHUM, John W. , WALTON, J. Rodney , WALLACE, Mark S. , HOWARD, Steven J. , INANOGLU, Hakan
IPC分类号： G06F17/16
CPC分类号： H04L25/0248 , G06F17/16
摘要： Techniques for decomposing matrices using Jacobi rotation are described. Multiple iterations of Jacobi rotation are performed on a first matrix of complex values with multiple Jacobi rotation matrices of complex values to zero out the off-diagonal elements in the first matrix. For each iteration, a submatrix may be formed based on the first matrix and decomposed to obtain eigenvectors for the submatrix, and a Jacobi rotation matrix may be formed with the eigenvectors and used to update the first matrix. A second matrix of complex values, which contains orthogonal vectors, is derived based on the Jacobi rotation matrices. For eigenvalue decomposition, a third matrix of eigenvalues may be derived based on the Jacobi rotation matrices. For singular value decomposition, a fourth matrix with left singular vectors and a matrix of singular values may be derived based on the Jacobi rotation matrices.
摘要翻译：描述了使用雅可比旋转分解矩阵的技术。对具有复数值的多个Jacobi旋转矩阵的复数值的第一矩阵执行Jacobi旋转的多次迭代，以将第一矩阵中的非对角线元素归零。对于每个迭代，可以基于第一矩阵形成子矩阵并且被分解以获得子矩阵的特征向量，并且可以与特征向量形成雅可比旋转矩阵并用于更新第一矩阵。基于Jacobi旋转矩阵导出包含正交向量的第二个复数值矩阵。对于特征值分解，可以基于Jacobi旋转矩阵导出特征值的第三矩阵。对于奇异值分解，可以基于雅可比旋转矩阵导出具有左奇异矢量的第四矩阵和奇异值矩阵。

7. 发明申请

WO2012009574A1 METHOD IN A WIRELESS REPEATER EMPLOYING AN ANTENNA ARRAY INCLUDING VERTICAL AND HORIZONTAL FEEDS FOR INTERFERENCE REDUCTION 审中-公开
标题翻译：采用天线阵列的无线中继器的方法，包括垂直和水平馈线用于干扰减少
公开(公告)号：WO2012009574A1
公开(公告)日：2012-01-19
申请号：PCT/US2011/044070
申请日：2011-07-14
申请人： QUALCOMM Incorporated , PROCTOR, James A. Jr. , GAINEY, Kenneth, M. , HOWARD, Steven, J. , INANOGLU, Hakan
发明人： PROCTOR, James A. Jr. , GAINEY, Kenneth, M. , HOWARD, Steven, J. , INANOGLU, Hakan
IPC分类号： H04B7/155
CPC分类号： H04B7/15571 , H01Q21/28 , H04B7/0691 , H04B7/0874 , H04W24/10 , H04W84/047
摘要： An echo cancellation wireless repeater with first and second antenna arrays having vertical and horizontal feed antenna elements selects a combination of antenna elements for reception and transmission to reduce interference and improve the quality of signal reception. In one embodiment, the antenna elements are switchably connected to transceiver circuits and a combination of antenna elements is selected based on the best desired performance result. In another embodiment, the antenna elements are each connected to its own transceiver circuit and the echo cancellation repeater performs beamforming in baseband to select a combination of antenna elements.
摘要翻译：具有垂直和水平馈送天线元件的第一和第二天线阵列的回波消除无线中继器选择用于接收和发送的天线元件的组合以减少干扰并提高信号接收的质量。在一个实施例中，天线元件可切换地连接到收发器电路，并且基于最佳期望性能结果来选择天线元件的组合。在另一个实施例中，天线元件各自连接到其自己的收发器电路，并且回波消除中继器在基带中执行波束成形以选择天线元件的组合。

8. 发明申请

WO2010132449A1 WIDEBAND ECHO CANCELLATION IN A REPEATER 审中-公开
标题翻译：一个重复的宽带ECHO取消
公开(公告)号：WO2010132449A1
公开(公告)日：2010-11-18
申请号：PCT/US2010/034387
申请日：2010-05-11
申请人： QUALCOMM INCORPORATED , GORE, Dhananjay Ashok , BARRIAC, Gwendolyn Denise , PROCTOR, James, Arthur, Jr. , HOWARD, Steven J. , INANOGLU, Hakan , GAINEY, Kenneth M. , WANG, Michael Mao , TIAN, Tao
发明人： GORE, Dhananjay Ashok , BARRIAC, Gwendolyn Denise , PROCTOR, James, Arthur, Jr. , HOWARD, Steven J. , INANOGLU, Hakan , GAINEY, Kenneth M. , WANG, Michael Mao , TIAN, Tao
IPC分类号： H04B7/155
CPC分类号： H04B7/15535 , H04B7/15585 , H04L27/2607 , H04L27/2613
摘要： A wireless repeater having a receiving antenna for receiving an input signal and a transmitting antenna for transmitting an amplified signal includes first and second front-end circuits and a repeater baseband block coupled between the first and second front-end circuits. The repeater baseband block includes a channel estimation block, an echo canceller implementing time domain echo cancellation, a variable gain stage controlled by a gain control block implementing digital gain control, a first variable delay element introducing a first delay before or after the echo canceller, a second variable delay element introducing a second delay to the output signal. The delayed output signal is coupled to the channel estimation block as a reference signal for estimating the feedback channel, to the echo canceller as a reference signal for estimating the feedback signal, and to the gain control block for monitoring the stability of the repeater.
摘要翻译：具有用于接收输入信号的接收天线和用于发送放大信号的发射天线的无线中继器包括耦合在第一和第二前端电路之间的第一和第二前端电路和中继器基带块。中继器基带块包括信道估计块，实现时域回声消除的回波消除器，实现数字增益控制的增益控制块控制的可变增益级，在回波消除器之前或之后引入第一延迟的第一可变延迟元件，向输出信号引入第二延迟的第二可变延迟元件。延迟输出信号作为用于估计反馈信道的参考信号，作为用于估计反馈信号的参考信号的回波消除器和用于监视中继器的稳定性的增益控制块耦合到信道估计块。

9. 发明申请

WO2010124298A2 I/Q IMBALANCE ESTIMATION AND COMPENSATION FOR A TRANSMITTER AND A RECEIVER 审中-公开
标题翻译： I / Q发射机和接收机的不平等估计和补偿
公开(公告)号：WO2010124298A2
公开(公告)日：2010-10-28
申请号：PCT/US2010/032458
申请日：2010-04-26
申请人： QUALCOMM Incorporated , METREAUD, Leon T. , INANOGLU, Hakan , ZHANG, Xiangdong , CHEN, Zhenqi
发明人： METREAUD, Leon T. , INANOGLU, Hakan , ZHANG, Xiangdong , CHEN, Zhenqi
IPC分类号： H04L27/00
CPC分类号： H04L27/0014 , H04L27/364 , H04L27/3863 , H04L2027/0016
摘要： Techniques for performing inphase/quadrature (I/Q) imbalance estimation and compensation are described. In one exemplary design, I/Q imbalances in a receiver may be estimated by (i) applying a continuous wave signal at different frequencies to the receiver and (ii) processing I and Q input samples from the receiver to determine I/Q imbalances at different frequencies. In another exemplary design, I/Q imbalances may be estimated by (i) downconverting an input RF signal with an LO signal that is offset in frequency from the input RF signal, (ii) transforming I and Q input samples from the receiver to the frequency domain to obtain I and Q symbols, and (iii) determining I/Q imbalances based on the I and Q symbols. In one exemplary design, I/Q imbalances may be corrected by compensating for frequency-dependent and frequency-independent I/Q imbalances separately. I/Q imbalances in a transmitter may also be estimated and compensated.
摘要翻译：描述了执行同相/正交（I / Q）不平衡估计和补偿的技术。在一个示例性设计中，可以通过（i）将不同频率的连续波信号应用于接收机来估计接收机中的I / Q不平衡，以及（ii）处理来自接收机的I和Q输入样本以确定I / Q不平衡不同的频率。在另一示例性设计中，I / Q不平衡可以通过以下方式来估计：（i）利用从输入RF信号偏移频率的LO信号来下变频输入RF信号，（ii）将I和Q输入样本从接收机变换到频域以获得I和Q符号，以及（iii）基于I和Q符号来确定I / Q不平衡。在一个示例性设计中，可以通过分别补偿频率相关和频率独立的I / Q不平衡来校正I / Q不平衡。也可以估计和补偿发射机中的I / Q不平衡。

10. 发明申请

WO2010002801A1 ANTENNA ARRAY CONFIGURATIONS FOR HIGH THROUGHPUT MIMO WLAN SYSTEMS 审中-公开
标题翻译：天线阵列配置用于高速吞吐MIMO无线局域网系统
公开(公告)号：WO2010002801A1
公开(公告)日：2010-01-07
申请号：PCT/US2009/049081
申请日：2009-06-29
申请人： QUALCOMM INCORPORATED , INANOGLU, Hakan , KETCHUM, John, W. , METREAUD, Leon , WALLACE, Mark, S.
发明人： INANOGLU, Hakan , KETCHUM, John, W. , METREAUD, Leon , WALLACE, Mark, S.
IPC分类号： H01Q13/10 , H01Q21/06 , H01Q21/26 , H01Q1/22 , H04B7/04
CPC分类号： H01Q21/064 , H01Q1/2258 , H01Q1/2291 , H01Q13/106 , H01Q21/26 , H04B7/04 , H04B7/10
摘要： The present disclosure provides techniques for configuring multi-element antenna arrays. Such antenna arrays may be designed with slot pairs separated by lambda/2 along perpendicular axes (e.g., x and y-directions). One such array (210) may have four or more co-located antenna element pairs (212) formed with cross slots having the same rotational orientation. Another such array (220) may have four or more co-located antenna element pairs (222) formed with some cross slots having the same rotational orientation and other cross slots having a different rotational orientation.
摘要翻译：本公开提供了用于配置多元件天线阵列的技术。这样的天线阵列可以被设计成沿着垂直轴（例如，x和y方向）以λ/ 2分隔的槽对。一个这样的阵列（210）可以具有形成有具有相同旋转取向的十字槽的四个或更多个共同定位的天线元件对（212）。另一个这种阵列（220）可以具有四个或更多个共同定位的天线元件对（222），其形成有具有相同旋转定向的一些十字槽和具有不同旋转取向的其他十字槽。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式