公开(公告)号：US08830907B2

公开(公告)日：2014-09-09

申请号：US13062184

申请日：2008-09-04

申请人： Bruno Melis ,  Rosalba Campanale ,  Alfredo Ruscitto ,  Federica Caldara

发明人： Bruno Melis ,  Rosalba Campanale ,  Alfredo Ruscitto ,  Federica Caldara

IPC分类号： H04W4/00 ,  H04B7/08 ,  H04B1/712 ,  H04B1/7105

CPC分类号： H04B7/0845 ,  H04B1/71055 ,  H04B1/712

摘要： Signals received from channels exposed to multi-path propagation via a plurality of diversity antennas and including at least one pilot signal are processed by detecting a set of multi-path components for each received signal and computing a set of channel coefficients from multi-path components of the at least one pilot signal in the set of multi-path components. The set of channel coefficients is organized as a channel coefficient vector. From the channel coefficient vector, a set of combining weights is estimated to be applied to the received signals by: computing a spatial correlation matrix of the channel coefficient vector by neglecting the correlations between multi-path components of the channel coefficient vector having different delays, whereby the correlation matrix is a block diagonal matrix including null coefficients other than for non-null sub-matrixes arranged along the diagonal of the correlation matrix, wherein the sub-matrixes have a size equal to the number of diversity antennas; deriving from the spatial correlation matrix a resulting matrix by calculating the inverse of the sub-matrixes or a scaled version thereof; and multiplying the resulting matrix and the channel coefficient vector in order to obtain the desired set of combining weights.

摘要翻译： 通过经由多个分集天线暴露于多路径传播并且包括至少一个导频信号的信道接收到的信号通过检测每个接收信号的多路径分量集合并且从多路径分量计算一组信道系数来处理 的多路径分量集合中的至少一个导频信号。 信道系数集合被组织为信道系数向量。 从信道系数向量，通过以下方式估计组合权重集合：通过忽略具有不同延迟的信道系数向量的多径分量之间的相关性来计算信道系数向量的空间相关矩阵， 由此相关矩阵是包括除了相关矩阵的对角线排列的非零子矩阵之外的空系数的块对角矩阵，其中子矩阵的大小等于分集天线的数量; 通过计算子矩阵的逆或其缩放版本从空间相关矩阵导出得到的矩阵; 并乘以所得到的矩阵和信道系数向量，以便获得期望的组合权重集合。

公开(公告)号：US20110158180A1

公开(公告)日：2011-06-30

申请号：US13062184

申请日：2008-09-04

申请人： Bruno Melis ,  Rosalba Campanale ,  Alfredo Ruscitto ,  Federica Caldara

发明人： Bruno Melis ,  Rosalba Campanale ,  Alfredo Ruscitto ,  Federica Caldara

IPC分类号： H04L27/06 ,  H04W4/00

CPC分类号： H04B7/0845 ,  H04B1/71055 ,  H04B1/712

摘要： Signals received from channels exposed to multi-path propagation via a plurality of diversity antennas and including at least one pilot signal are processed by detecting a set of multi-path components for each received signal and computing a set of channel coefficients from multi-path components of the at least one pilot signal in the set of multi-path components. The set of channel coefficients is organized as a channel coefficient vector. From the channel coefficient vector, a set of combining weights is estimated to be applied to the received signals by: computing a spatial correlation matrix of the channel coefficient vector by neglecting the correlations between multi-path components of the channel coefficient vector having different delays, whereby the correlation matrix is a block diagonal matrix including null coefficients other than for non-null sub-matrixes arranged along the diagonal of the correlation matrix, wherein the sub-matrixes have a size equal to the number of diversity antennas; deriving from the spatial correlation matrix a resulting matrix by calculating the inverse of the sub-matrixes or a scaled version thereof; and multiplying the resulting matrix and the channel coefficient vector in order to obtain the desired set of combining weights.

摘要翻译： 通过经由多个分集天线暴露于多路径传播并且包括至少一个导频信号的信道接收到的信号通过检测每个接收信号的多路径分量集合并从多路径分量计算一组信道系数来处理 的多路径分量集合中的至少一个导频信号。 信道系数集合被组织为信道系数向量。 从信道系数向量，通过以下方式估计组合权重集合：通过忽略具有不同延迟的信道系数向量的多径分量之间的相关性来计算信道系数向量的空间相关矩阵， 由此相关矩阵是包括除了相关矩阵的对角线排列的非零子矩阵之外的空系数的块对角矩阵，其中子矩阵的大小等于分集天线的数量; 通过计算子矩阵的逆或其缩放版本从空间相关矩阵导出得到的矩阵; 并乘以所得到的矩阵和信道系数向量，以便获得期望的组合权重集合。

公开(公告)号：US20090067518A1

公开(公告)日：2009-03-12

申请号：US12087098

申请日：2005-12-28

申请人： Bruno Melis ,  Alfredo Ruscitto ,  Rosalba Campanale

发明人： Bruno Melis ,  Alfredo Ruscitto ,  Rosalba Campanale

IPC分类号： H04L25/02

CPC分类号： H04L25/0232 ,  G06F17/17

摘要： A method for interpolating between a first and a second point includes the steps of calculating a first distance between a first and a second independent value and a second distance between a first and a second dependent value, right shifting the first and the second distances by a predetermined number of bits for obtaining respectively a hold step and a variations step and generating a number of interpolated points, having independent values between the first and the second independent values and corresponding dependent values obtained by alternating hold and variations phases, wherein the hold phase consists of generating a number of points corresponding to the hold step having the same dependent value, and wherein the variations phase consists of varying the dependent value by the variations step until the number of interpolated points has been calculated. The method is particularly suitable for channel estimation in communication systems.

摘要翻译： 用于在第一和第二点之间进行内插的方法包括以下步骤：计算第一和第二独立值之间的第一距离和第一和第二从属值之间的第二距离，右移第一和第二距离乘以 用于获得分别保持步骤和变化步骤并产生多个插值点的预定数量的比特，其具有通过交替保持和变化阶段获得的第一和第二独立值和相应的依赖值之间的独立值，其中保持阶段包括 产生对应于具有相同相关值的保持步骤的点数，并且其中所述变化阶段包括通过所述变化步骤改变所述依赖值，直到已经计算出内插点数。 该方法特别适用于通信系统中的信道估计。