公开(公告)号：US09191240B2

公开(公告)日：2015-11-17

申请号：US14343082

申请日：2012-10-02

Applicant: ST-Ericsson SA

Inventor： Aravindh Krishnamoorthy

IPC: H04L27/06 ,  H04L1/00 ,  H04L25/02 ,  H04L25/03 ,  H04L27/26 ,  H04W52/02

CPC classification number: H04L25/0212 ,  H04L25/0224 ,  H04L25/03006 ,  H04L27/2695 ,  H04W52/0209 ,  Y02D70/122 ,  Y02D70/1242 ,  Y02D70/164

Abstract: The present subject matter discloses a system and a method for processing of channel coefficients of networks. In one embodiment, the method includes ascertaining at least one probable synchronization position of a received sequence and projecting, by oblique projection, at least one given noise basis vector spanning a given noise space onto the null space, so as to determine a channel impulse response at the at least one probable synchronization position. Based on a criterion related to the channel impulse response, a synchronization point for the received sequence is identified from the at least one probable synchronization position. The method also includes determining the noise contribution at the synchronization point and determining the noise coefficient of the at least one given noise basis vector based on the noise contribution so as to recover a signal substantially similar to the originally transmitted signal.

Abstract translation: 本主题公开了一种用于处理网络的信道系数的系统和方法。 在一个实施例中，该方法包括确定接收到的序列的至少一个可能的同步位置，并通过倾斜投影将跨过给定噪声空间的至少一个给定噪声基矢量投影到零空间上，以便确定信道脉冲响应 在所述至少一个可能的同步位置。 基于与信道脉冲响应相关的准则，从所述至少一个可能的同步位置识别所接收序列的同步点。 该方法还包括确定同步点处的噪声贡献，并且基于噪声贡献确定至少一个给定噪声基矢量的噪声系数，以恢复基本上类似于原始发射信号的信号。

公开(公告)号：US09225566B2

公开(公告)日：2015-12-29

申请号：US14361399

申请日：2012-12-10

Applicant: ST-Ericsson SA

Inventor： Leela Srikar Muppirisetty ,  Aravindh Krishnamoorthy

IPC: H04L27/00

CPC classification number: H04L27/0014 ,  H04L2027/0028 ,  H04L2027/0042

Abstract: The present subject matter discloses a system and a method for estimating a frequency offset in communication devices. In one embodiment, the method of estimating a frequency offset in a communication device comprises generating a reconstructed signal based at least in part on a channel impulse response (CIR) corresponding to a received signal. Further, a normalization matrix is determined for the reconstructed signal. Thereafter, based at least in part on the normalization matrix and the reconstructed signal, the frequency offset is estimated such that the frequency offset corresponds to a maximum normalized-correlation between the reconstructed signal and the received signal.

Abstract translation: 本主题公开了一种用于估计通信设备中的频率偏移的系统和方法。 在一个实施例中，估计通信设备中的频率偏移的方法包括至少部分地基于对应于接收信号的信道脉冲响应（CIR）来生成重构信号。 此外，为重构信号确定归一化矩阵。 此后，至少部分地基于归一化矩阵和重构信号，估计频率偏移，使得频率偏移对应于重构信号和接收信号之间的最大归一化相关。

公开(公告)号：US20140328379A1

公开(公告)日：2014-11-06

申请号：US14343082

申请日：2012-10-02

Applicant: ST-Ericsson SA

Inventor： Aravindh Krishnamoorthy

IPC: H04L25/02 ,  H04W52/02

CPC classification number: H04L25/0212 ,  H04L25/0224 ,  H04L25/03006 ,  H04L27/2695 ,  H04W52/0209 ,  Y02D70/122 ,  Y02D70/1242 ,  Y02D70/164

Abstract: The present subject matter discloses a system and a method for processing of channel coefficients of networks. In one embodiment, the method includes ascertaining at least one probable synchronization position of a received sequence and projecting, by oblique projection, at least one given noise basis vector spanning a given noise space onto the null space, so as to determine a channel impulse response at the at least one probable synchronization position. Based on a criterion related to the channel impulse response, a synchronization point for the received sequence is identified from the at least one probable synchronization position. The method also includes determining the noise contribution at the synchronization point and determining the noise coefficient of the at least one given noise basis vector based on the noise contribution so as to recover a signal substantially similar to the originally transmitted signal.

Abstract translation: 本主题公开了一种用于处理网络的信道系数的系统和方法。 在一个实施例中，该方法包括确定接收到的序列的至少一个可能的同步位置，并通过倾斜投影将跨过给定噪声空间的至少一个给定噪声基矢量投影到零空间上，以便确定信道脉冲响应 在所述至少一个可能的同步位置。 基于与信道脉冲响应相关的准则，从所述至少一个可能的同步位置识别所接收序列的同步点。 该方法还包括确定同步点处的噪声贡献，并且基于噪声贡献确定至少一个给定噪声基矢量的噪声系数，以恢复基本上类似于原始发射信号的信号。

公开(公告)号：US20140321526A1

公开(公告)日：2014-10-30

申请号：US14361399

申请日：2012-12-10

Applicant: ST-Ericsson SA

Inventor： Leela Srikar Muppirisetty ,  Aravindh Krishnamoorthy

IPC: H04L27/00

CPC classification number: H04L27/0014 ,  H04L2027/0028 ,  H04L2027/0042

Abstract: The present subject matter discloses a system and a method for estimating a frequency offset in communication devices. In one embodiment, the method of estimating a frequency offset in a communication device comprises generating a reconstructed signal based at least in part on a channel impulse response (CIR) corresponding to a received signal. Further, a normalization matrix is determined for the reconstructed signal. Thereafter, based at least in part on the normalization matrix and the reconstructed signal, the frequency offset is estimated such that the frequency offset corresponds to a maximum normalized-correlation between the reconstructed signal and the received signal.

Abstract translation: 本主题公开了一种用于估计通信设备中的频率偏移的系统和方法。 在一个实施例中，估计通信设备中的频率偏移的方法包括至少部分地基于对应于接收信号的信道脉冲响应（CIR）来生成重构信号。 此外，为重构信号确定归一化矩阵。 此后，至少部分地基于归一化矩阵和重构信号，估计频率偏移，使得频率偏移对应于重构信号和接收信号之间的最大归一化相关。