公开(公告)号：US20220224375A1

公开(公告)日：2022-07-14

申请号：US17571928

申请日：2022-01-10

Applicant: Alcatel Lucent

Inventor： Jochen MAES ,  Michael TIMMERS ,  Dirk VANDERHAEGEN ,  Carl NUZMAN ,  Danny VAN BRUYSSEL

IPC: H04B3/32

Abstract: In accordance with an embodiment, the method includes detecting an update event whereupon a precoder needs to be updated, sending signal adjustment information to a receiver remotely coupled to a subscriber line out of the plurality of subscriber lines indicative of a signal compensation factor to be applied to a receive communication signal to compensate for a channel bias caused by the scheduled precoder update, and time-coordinating the precoder update with the enforcement of the signal compensation factor at the receiver.

公开(公告)号：US20150326278A1

公开(公告)日：2015-11-12

申请号：US14654690

申请日：2014-01-07

Applicant: ALCATEL-LUCENT

Inventor： Jochen MAES ,  Michael TIMMERS ,  Dirk VANDERHAEGEN ,  Carl NUZMAN ,  Danny VAN BRUYSSEL

IPC: H04B3/32

CPC classification number: H04B3/32

Abstract: In accordance with an embodiment, the method includes detecting an update event whereupon a precoder needs to be updated, sending signal adjustment information to a receiver remotely coupled to a subscriber line out of the plurality of subscriber lines indicative of a signal compensation factor to be applied to a receive communication signal to compensate for a channel bias caused by the scheduled precoder update, and time-coordinating the precoder update with the enforcement of the signal compensation factor at the receiver.

Abstract translation: 根据实施例，所述方法包括检测更新事件，因此需要更新预编码器，将信号调整信息发送到远程耦合到多个用户线中的用户线的接收机，其指示要应用的信号补偿因子 到接收通信信号以补偿由调度的预编码器更新引起的信道偏移，并且在接收机处执行信号补偿因子来对预编码器更新进行时间协调。

公开(公告)号：US20170054473A1

公开(公告)日：2017-02-23

申请号：US15119584

申请日：2015-03-09

Applicant: Alcatel Lucent

Inventor： MAES JOCHEN ,  Michael TIMMERS

IPC: H04B3/32 ,  H04L1/00 ,  H04L5/00 ,  H04B7/04 ,  H04L5/14

CPC classification number: H04B3/32 ,  H03M13/353 ,  H04B7/0413 ,  H04B7/0465 ,  H04L1/0011 ,  H04L1/0033 ,  H04L5/0048 ,  H04L5/143 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/03343 ,  H04L25/4975

Abstract: A network unit includes a non-linear precoder for jointly pre-processing transmit samples to be transmitted over respective communication channels for crosstalk mitigation. The non-linear precoder includes a first non-linear precoding stage configured to operate according to a first triangular precoding matrix and including a modulo function, followed by a second linear precoding stage configured to operate according to a second precoding matrix. The network unit further includes a first pilot signal generator configured to generate first pilot signals for pre-processing by the second precoding stage only to yield partially-precoded pilot signals for further transmission over the respective communication channels, and a controller configured to update the second precoding matrix based on first error measurements performed during the transmission of the partially-precoded pilot signals over the respective communication channels while keeping the first precoding matrix unaltered.

Abstract translation: 网络单元包括非线性预编码器，用于联合预处理要通过各个通信信道发送的用于串扰减轻的发送样本。 非线性预编码器包括第一非线性预编码级，其被配置为根据第一三角形预编码矩阵并且包括模函数，随后是被配置为根据第二预编码矩阵进行操作的第二线性预编码级。 网络单元还包括第一导频信号发生器，其被配置为产生用于由第二预编码级进行预处理的第一导频信号，以产生部分预编码的导频信号，用于通过各个通信信道进一步传输;以及控制器，被配置为更新第二导频信号 基于在通过各个通信信道传输部分预编码的导频信号期间执行的第一误差测量同时保持第一预编码矩阵不变的预编码矩阵。

公开(公告)号：US20160043786A1

公开(公告)日：2016-02-11

申请号：US14782730

申请日：2014-04-28

Applicant: ALCATEL LUCENT

Inventor： Jochen MAES ,  Michael TIMMERS

IPC: H04B7/04

CPC classification number: H04B7/0456 ,  H04B3/32 ,  H04L25/03159 ,  H04L25/03343 ,  H04L2025/03636

Abstract: The present invention relates to a signal processing unit for pre-processing signals for crosstalk mitigation.In accordance with an embodiment of the invention, the signal processing unit comprises a modulo unit configured to determine individual modulo shifts (Δ) for respective transmit samples (U) to be transmitted over respective communication channels (H) based on first channel coupling information (L), and to add the modulo shifts to the respective transmit samples, and a linear precoder configured to jointly process the resulting transmit samples based on second channel coupling information (p′) that aim at effectively diagonalizing an overall channel matrix (HP′) resulting from the concatenation of the linear precoder with the communication channels.The present invention also relates to a method for pre-processing signals for crosstalk mitigation.

Abstract translation: 本发明涉及一种用于预处理用于串扰减轻的信号的信号处理单元。 根据本发明的实施例，信号处理单元包括模数单元，其被配置为基于第一信道耦合信息来确定要通过各个通信信道（H）发送的相应发射样本（U）的各个模移（＆Dgr） （L），并且向相应的发射样本添加模移;以及线性预编码器，被配置为基于第二信道耦合信息（p'）联合处理所得到的发射样本，所述第二信道耦合信息（p'）旨在有效对角化整个信道矩阵（HP' ）由线性预编码器与通信信道的级联产生。 本发明还涉及用于预处理用于串扰减轻的信号的方法。