公开(公告)号：WO2010025749A1

公开(公告)日：2010-03-11

申请号：PCT/EP2008/007239

申请日：2008-09-04

Applicant: TELECOM ITALIA S.p.A ,  MELIS, Bruno ,  CAMPANALE, Rosalba ,  RUSCITTO, Alfredo ,  CALDARA, Federica

Inventor： MELIS, Bruno ,  CAMPANALE, Rosalba ,  RUSCITTO, Alfredo ,  CALDARA, Federica

IPC: H04B7/08 ,  H04B1/707

CPC classification number: H04B7/0845 ,  H04B1/71055 ,  H04B1/712

Abstract: Signals received (14, 16) from channels exposed to multi-path propagation via a plurality of diversity antennas (12) and comprising at least one pilot signal are processed by detecting (18) a set of multi-path components for each of the received signal and computing (22) a set of channel coefficients from multi-path components of the at least one pilot signal in the set of multi-path components, wherein the set of channel coefficients is organized as a channel coefficient vector. From said channel coefficient vector, a set of combining weights (w) is estimated (22) to be applied (24) to the received signals by: - computing (22) 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 comprising null coefficients other than for non-null sub-matrixes arranged along the diagonal of said correlation matrix, wherein said sub-matrixes have a size equal to the number of diversity antennas; - deriving (22) from the spatial correlation matrix a resulting matrix by calculating the inverse of said sub-matrixes or a scaled version thereof; and - multiplying (22) the resulting matrix and the channel coefficient vector in order to obtain the desired set of combining weights (w).

Abstract translation: 通过经由多个分集天线（12）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（14,16）通过检测（18）一组多路径分量来处理 信号和计算（22）来自所述多路径分量集合中的所述至少一个导频信号的多径分量的一组信道系数，其中所述信道系数集合被组织为信道系数向量。 从所述信道系数向量中，通过以下方式来估计（22）对所接收的信号（24）应用组合权重（w）（22）： - 通过忽略信道系数向量之间的相关性来计算（22）空间相关矩阵 具有不同延迟的信道系数向量的多路径分量，由此相关矩阵是包括除了对应于所述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，其中所述子矩阵具有 大小等于分集天线的数量; - 通过计算所述子矩阵的逆或其缩放版本从所述空间相关矩阵导出所得到的矩阵（22）; 以及 - 乘以（22）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（w）。

公开(公告)号：WO2007073758A1

公开(公告)日：2007-07-05

申请号：PCT/EP2005/014066

申请日：2005-12-28

Applicant: TELECOM ITALIA S.P.A. ,  MELIS, Bruno ,  RUSCITTO, Alfredo ,  CAMPANALE, Rosalba

Inventor： MELIS, Bruno ,  RUSCITTO, Alfredo ,  CAMPANALE, Rosalba

IPC: G06F17/17 ,  H04L25/02

CPC classification number: H04L25/0232 ,  G06F17/17

Abstract: It is described a method for interpolating between a first (A) and a second point (B), said method comprising the steps of calculating a first distance (Δx) between a first (x A ) and a second (x B ) independent value and a second distance (Δy) between a first (y A ) and a second (y B ) dependent value, right shifting said first (Δx) and said second (Δy) distances by a predetermined number of bits (L) for obtaining respectively a hold step (1x) and a variations step (1y) and generating a number (N) of interpolated points, having independent values comprised between said first (x A ) and said second (x B ) independent values and corresponding dependent values obtained by alternating hold and variations phases, wherein said hold phase consists in generating a number of points corresponding to said hold step (1x)having the same dependent value, and wherein said variations phase consists in varying the dependent value by said variations step (1y), until said number (N) of interpolated points has been calculated. The method is particularly suitable for channel estimation in communication systems.

Abstract translation: 描述了一种用于在第一（A）和第二点（B）之间进行内插的方法，所述方法包括以下步骤：计算第一（xA）和（II）之间的第一距离（Δx） 第一（（Y）A）/（SUB）和第二（y））之间的第二距离（Δy） 分别将所述第一（Δx）和所述第二（Δy）的距离移动预定位数（L），分别获得保持步骤（1x）和变化步骤 （1y）并且生成数量（N）个内插点，其具有包括在所述第一（x）A / N）和所述第二（x B B）之间的独立值， 通过交替保持和变化相位获得的独立值和相应的依赖值，其中所述保持相位包括产生与具有相同的相关值的所述保持步骤（1x）相对应的点数，并且其中所述变化阶段包括变化依赖值 由 所述变化步骤（1y）直到已经计算出所述数量（N）的内插点为止。 该方法特别适用于通信系统中的信道估计。