公开(公告)号：WO2003098832A3

公开(公告)日：2003-11-27

申请号：PCT/BE2003/000087

申请日：2003-05-19

Applicant: STMICROELECTRONICS N.V. ,  STMICROELECTRONICS BELGIUM N.V. ,  PISONI, Fabio ,  HUG, Roland ,  BONAVENTURA, Marco

Inventor： PISONI, Fabio ,  HUG, Roland ,  BONAVENTURA, Marco

IPC: H04L27/26

Abstract: An equalizer for a multi carrier transmission system, converts a transmitted multi carrier signal into sampled frequency domain signals, and suppresses time domain delay dispersion, on the sampled frequency domain signals. It exploits circulant decomposition of a Toeplitz matrix to enable the computationally heavy evaluation of a matrix multiplied by a vector, to be avoided. Increased precision arises from the frequency domain processing being equivalent to a longer time domain FIR filter than is normally practical. The amount of compensation for different carriers can be adjusted, which can lead to increased precision.

公开(公告)号：WO2003098833A3

公开(公告)日：2003-11-27

申请号：PCT/BE2003/000088

申请日：2003-05-19

Applicant: STMICROELECTRONICS N.V. ,  PISONI, Fabio ,  HUG, Roland ,  BONAVENTURA, Marco

Inventor： PISONI, Fabio ,  HUG, Roland ,  BONAVENTURA, Marco

IPC: H04B3/23

Abstract: There is disclosed a multi-carrier transceiver system for use in echo-cancellation. The transceiver system is arranged to generate from input data (1) a multi-carrier transmit signal (u) comprising a plurality of multi-carrier data blocks. The transceiver system also has a multi-carrier signal receiver responsive to an input multi-carrier receive signal (Yi) received from a remote signal transmitter. An echo canceller (2000) is arranged to generate from a pair of multi-carrier data blocks (u) a set of frequency-domain echo parameters (W) for use in generating an echo signal, (Y), to generate the echo signal using the frequency-domain echo parameters (W), and to input the echo signal (Y) to the multi-carrier signal receiver for use in generating an echo-cancelled receive signal (Ei) from the input receive signal (Yi) and the echo signal (Y).

公开(公告)号：WO2003098832A2

公开(公告)日：2003-11-27

申请号：PCT/BE2003/000087

申请日：2003-05-19

Applicant: STMICROELECTRONICS N.V. ,  STMICROELECTRONICS BELGIUM N.V. ,  PISONI, Fabio ,  HUG, Roland ,  BONAVENTURA, Marco

Inventor： PISONI, Fabio ,  HUG, Roland ,  BONAVENTURA, Marco

IPC: H04B3/23

CPC classification number: H04B3/23 ,  H04L25/03012 ,  H04L25/03159 ,  H04L27/2647

Abstract: An equalizer for a multi carrier transmission system, converts a transmitted multi carrier signal into sampled frequency domain signals, and suppresses time domain delay dispersion, on the sampled frequency domain signals. It exploits circulant decomposition of a Toeplitz matrix to enable the computationally heavy evaluation of a matrix multiplied by a vector, to be avoided. Increased precision arises from the frequency domain processing being equivalent to a longer time domain FIR filter than is normally practical. The amount of compensation for different carriers can be adjusted, which can lead to increased precision.

Abstract translation: 一种用于多载波传输系统的均衡器，将所发送的多载波信号转换成采样的频域信号，并对采样的频域信号抑制时域延迟色散。 它利用Toeplitz矩阵的循环分解，使得可以计算重估计矩阵乘以向量，以避免。 与通常实际相比，频域处理相当于更长时间的FIR滤波器产生的精度提高。 可以调整不同载体的补偿量，从而提高精度。

公开(公告)号：EP1506653B1

公开(公告)日：2007-04-11

申请号：EP03724678.2

申请日：2003-05-19

Applicant: STMicroelectronics N.V. ,  STMicroelectronics Belgium N.V.

Inventor： PISONI, Fabio ,  HUG, Roland ,  BONAVENTURA, Marco

IPC: H04L27/26

CPC classification number: H04B3/23 ,  H04L25/03012 ,  H04L25/03159 ,  H04L27/2647

Abstract: An equalizer for a multi carrier transmission system, converts a transmitted multi carrier signal into sampled frequency domain signals, and suppresses time domain delay dispersion, on the sampled frequency domain signals. It exploits circulant decomposition of a Toeplitz matrix to enable the computationally heavy evaluation of a matrix multiplied by a vector, to be avoided. Increased precision arises from the frequency domain processing being equivalent to a longer time domain FIR filter than is normally practical. The amount of compensation for different carriers can be adjusted, which can lead to increased precision.

公开(公告)号：EP1506624A2

公开(公告)日：2005-02-16

申请号：EP03724679.0

申请日：2003-05-19

Applicant: STMicroelectronics N.V.

Inventor： PISONI, Fabio ,  HUG, Roland ,  BONAVENTURA, Marco

IPC: H04B3/23

CPC classification number: H04L25/03159 ,  H04B3/23 ,  H04L27/2647

Abstract: There is disclosed a multi-carrier transceiver system for use in echo-cancellation. The transceiver system is arranged to generate from input data (1) a multi-carrier transmit signal (u) comprising a plurality of multi-carrier data blocks. The transceiver system also has a multi-carrier signal receiver responsive to an input multi-carrier receive signal (Yi) received from a remote signal transmitter. An echo canceller (2000) is arranged to generate from a pair of multi-carrier data blocks (u) a set of frequency-domain echo parameters (W) for use in generating an echo signal, (Y), to generate the echo signal using the frequency-domain echo parameters (W), and to input the echo signal (Y) to the multi-carrier signal receiver for use in generating an echo-cancelled receive signal (Ei) from the input receive signal (Yi) and the echo signal (Y).

公开(公告)号：EP1506624B1

公开(公告)日：2007-12-12

申请号：EP03724679.0

申请日：2003-05-19

Applicant: STMicroelectronics N.V.

Inventor： PISONI, Fabio ,  HUG, Roland ,  BONAVENTURA, Marco

IPC: H04B3/23

CPC classification number: H04L25/03159 ,  H04B3/23 ,  H04L27/2647

Abstract: There is disclosed a multi-carrier transceiver system for use in echo-cancellation. The transceiver system is arranged to generate from input data (1) a multi-carrier transmit signal (u) comprising a plurality of multi-carrier data blocks. The transceiver system also has a multi-carrier signal receiver responsive to an input multi-carrier receive signal (Yi) received from a remote signal transmitter. An echo canceller (2000) is arranged to generate from a pair of multi-carrier data blocks (u) a set of frequency-domain echo parameters (W) for use in generating an echo signal, (Y), to generate the echo signal using the frequency-domain echo parameters (W), and to input the echo signal (Y) to the multi-carrier signal receiver for use in generating an echo-cancelled receive signal (Ei) from the input receive signal (Yi) and the echo signal (Y).

公开(公告)号：EP1506653A2

公开(公告)日：2005-02-16

申请号：EP03724678.2

申请日：2003-05-19

Applicant: STMicroelectronics N.V. ,  STMicroelectronics Belgium N.V.

Inventor： PISONI, Fabio ,  HUG, Roland ,  BONAVENTURA, Marco

IPC: H04L27/26

CPC classification number: H04B3/23 ,  H04L25/03012 ,  H04L25/03159 ,  H04L27/2647

Abstract: An equalizer for a multi carrier transmission system, converts a transmitted multi carrier signal into sampled frequency domain signals, and suppresses time domain delay dispersion, on the sampled frequency domain signals. It exploits circulant decomposition of a Toeplitz matrix to enable the computationally heavy evaluation of a matrix multiplied by a vector, to be avoided. Increased precision arises from the frequency domain processing being equivalent to a longer time domain FIR filter than is normally practical. The amount of compensation for different carriers can be adjusted, which can lead to increased precision.