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1. 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。

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

WO2006053340A3 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：WO2006053340A3
公开(公告)日：2008-07-31
申请号：PCT/US2005041783
申请日：2005-11-15
申请人： QUALCOMM INC , 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： H04J99/00 , H04L25/02 , H04B7/02
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。

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