公开(公告)号：US09231561B2

公开(公告)日：2016-01-05

申请号：US13341872

申请日：2011-12-30

Applicant: Yang-Seok Choi

Inventor： Yang-Seok Choi

IPC: H03H17/00 ,  H03H17/02 ,  H03H21/00 ,  H04L25/03

CPC classification number: H03H17/00 ,  H03H17/0294 ,  H03H21/0012 ,  H03H2021/0072 ,  H04L25/03038 ,  H04L2025/03636 ,  H04L2025/037

Abstract: A multi-stage adaptive filter is disclosed, which exhibits a smaller mean square error than in prior art adaptive filters. The adaptive filter selectively manipulates the weights, in multiple stages, so as to achieve a global minimum of the error function, such that the filtered signal has as small an error as possible.

Abstract translation: 公开了一种多级自适应滤波器，其表现出比现有技术的自适应滤波器更小的均方误差。 自适应滤波器在多个阶段中选择性地操纵权重，以便实现误差函数的全局最小值，使得经滤波的信号具有尽可能小的误差。

公开(公告)号：US09166847B2

公开(公告)日：2015-10-20

申请号：US14597391

申请日：2015-01-15

Applicant: MStar Semiconductor, Inc.

Inventor： Po-Nien Lin ,  Jyun-Yang Shih ,  Jiunn-Yih Lee

IPC: H04L27/01 ,  H04L7/027

CPC classification number: H04L27/01 ,  H04L7/027 ,  H04L25/03006 ,  H04L2025/037

Abstract: A signal receiving apparatus includes an equalization module, a coarse tuning module and a fine tuning module. The equalization module receives an input signal, and performs an equalization process on the input signal according to an equalization strength to generate an equalized signal. The coarse tuning module adjusts the equalization strength according to the equalized signal until the equalized signal satisfies a preliminary convergence condition. When the preliminary convergence condition is satisfied, the fine tuning module adjusts the equalization strength according to the equalized signal until the equalization strength satisfies a final convergence condition.

Abstract translation: 信号接收装置包括均衡模块，粗调模块和微调模块。 均衡模块接收输入信号，根据均衡强度对输入信号进行均衡处理，生成均衡信号。 粗调模块根据均衡信号调整均衡强度，直到均衡信号满足预收敛条件。 当满足预收敛条件时，微调模块根据均衡信号调整均衡强度，直到均衡强度满足最终的收敛条件。

公开(公告)号：US20150163076A1

公开(公告)日：2015-06-11

申请号：US14566970

申请日：2014-12-11

Applicant: THALES

Inventor： Francois BAPTISTE

IPC: H04L25/03

CPC classification number: H04L25/03057 ,  H04L25/03012 ,  H04L25/03853 ,  H04L25/03885 ,  H04L25/03949 ,  H04L27/01 ,  H04L2025/03611 ,  H04L2025/037

Abstract: An iterative method for synthesizing digital filters comprises the following steps: generation of a transmit filter intended to be applied to a signal to be transmitted; and generation of a receive filter intended to be applied to a received signal. The method comprises the following iteratively executed steps: convolution of the transmit filter and the receive filter in order to generate a transmission filter; determination of a criterion that is representative of the level of intersymbol interference on said transmission filter and whether the level of intersymbol interference is higher than a given level; calculation of an equalizing filter for the intersymbol interference; replacement of the transmit filter with the convoluted transmit filter having the equalizing filter or the replacement of the receive filter with the convoluted receive filter having the equalizing filter.

Abstract translation: 用于合成数字滤波器的迭代方法包括以下步骤：产生要施加到待传输信号的发射滤波器; 以及产生要被应用于接收信号的接收滤波器。 该方法包括以下迭代执行步骤：发送滤波器和接收滤波器的卷积，以便产生发送滤波器; 确定表示所述传输滤波器上符号间干扰水平的标准，以及符号间干扰程度是否高于给定级别; 用于符号间干扰的均衡滤波器的计算; 用具有均衡滤波器的卷积发射滤波器替换发射滤波器或用具有均衡滤波器的具有复数接收滤波器的接收滤波器的替换。

公开(公告)号：US20110243212A1

公开(公告)日：2011-10-06

申请号：US13027710

申请日：2011-02-15

Applicant: DoHan Kim ,  Beom Kon Kim ,  Sergey Zhidkov

Inventor： DoHan Kim ,  Beom Kon Kim ,  Sergey Zhidkov

IPC: H04L27/01

CPC classification number: H04L25/03057 ,  H04L25/03203 ,  H04L2025/03382 ,  H04L2025/03484 ,  H04L2025/03617 ,  H04L2025/037

Abstract: A symbol sequence corresponding to a vestigial sideband (VSB) signal is divided into a plurality of sections, respective ones of which correspond to respective time periods. Individual ones of the sections are recursively adaptively equalized to produce respective equalized sections. A bit stream is constructed from the equalized sections.

Abstract translation: 对应于残留边带（VSB）信号的符号序列被划分为多个部分，其中各个对应于各个时间段。 这些部分中的各个部分被递归地自适应地均衡以产生相应的相等部分。 从均衡部分构建位流。

公开(公告)号：US20110211656A1

公开(公告)日：2011-09-01

申请号：US13102946

申请日：2011-05-06

Applicant: Mark Kent ,  Vinko Erceg ,  Jun Zheng

Inventor： Mark Kent ,  Vinko Erceg ,  Jun Zheng

IPC: H04L25/49

CPC classification number: H04L25/03343 ,  H04B7/0639 ,  H04B7/0663 ,  H04L1/06 ,  H04L25/0204 ,  H04L25/0248 ,  H04L2025/03426 ,  H04L2025/03687 ,  H04L2025/037 ,  H04L2025/03808

Abstract: A delta quantizer for MIMO pre-coders with finite rate channel state information feedback may comprise partly quantizing a change in channel state information in a MIMO pre-coding system onto at least a first and a second codebook, each of which comprises one or more unitary matrices, using a cost function; and generating the at least first and second codebook based on at least the channel state information. The channel state information may be a matrix V and the cost function may be defined by the following relationship: f  ( A ) = ( 1 N  ∑ j = 1 N   a jj  2 ) where A is a matrix of size N by N and aij is element (i,j) of matrix A. One or more unitary matrices may be generated for the at least first codebook from at least a first set of matrices and a second set of matrices.

Abstract translation: 用于具有有限速率信道状态信息反馈的MIMO预编码器的增量量化器可以包括将MIMO预编码系统中的信道状态信息的改变部分地量化到至少第一和第二码本上，每个码本包括一个或多个单位 矩阵，使用成本函数; 以及至少基于所述信道状态信息生成所述至少第一和第二码本。 信道状态信息可以是矩阵V，并且可以通过以下关系来定义成本函数：f（A）=（1NΣΣ= 1 Na jj her 2）其中A是大小的矩阵 N是N，aij是矩阵A的元素（i，j）。可以从至少第一组矩阵和第二组矩阵为至少第一码本生成一个或多个酉矩阵。

公开(公告)号：US07961775B2

公开(公告)日：2011-06-14

申请号：US11767108

申请日：2007-06-22

Applicant: Mark Kent ,  Vinko Erceg ,  Jun Zheng

Inventor： Mark Kent ,  Vinko Erceg ,  Jun Zheng

IPC: H04L27/30

CPC classification number: H04L25/03343 ,  H04B7/0639 ,  H04B7/0663 ,  H04L1/06 ,  H04L25/0204 ,  H04L25/0248 ,  H04L2025/03426 ,  H04L2025/03687 ,  H04L2025/037 ,  H04L2025/03808

Abstract: Aspects of a method and system for a delta quantizer for MIMO pre-coders with finite rate channel state information feedback may comprise quantizing a change in channel state information in a MIMO pre-coding system onto at least a first and a second codebook, each of which comprises one or more unitary matrices, using a cost function; and generating the at least first and second codebook based on at least the channel state information. The channel state information may be a matrix V and the cost function may be defined by the following relationship: f ⁡ ( A ) = ( 1 N ⁢ ∑ j = 1 N ⁢  a j ⁢ ⁢ j  2 ) where A is a matrix of size N by N and aij is element (i,j) of matrix A. One or more unitary matrices may be generated for the at least first codebook from at least a first set of matrices and a second set of matrices.

Abstract translation: 用于具有有限速率信道状态信息反馈的MIMO预编码器的Δ量化器的方法和系统的方面可以包括将MIMO预编码系统中的信道状态信息的改变量化到至少第一和第二码本上， 其包括使用成本函数的一个或多个酉矩阵; 以及至少基于所述信道状态信息生成所述至少第一和第二码本。 信道状态信息可以是矩阵V，并且可以通过以下关系来定义成本函数：f⁡（A）=（1NΣj = 1 Naj⁢j2）其中A是矩阵 大小为N的N和aij是矩阵A的元素（i，j）。可以从至少第一组矩阵和第二组矩阵为至少第一码本生成一个或多个酉矩阵。

公开(公告)号：US20090097538A1

公开(公告)日：2009-04-16

申请号：US11870063

申请日：2007-10-10

Applicant: Pervez M. Aziz ,  Mohammad S. Mobin

Inventor： Pervez M. Aziz ,  Mohammad S. Mobin

IPC: H03H7/30

CPC classification number: H04L25/03146 ,  H04L25/03019 ,  H04L2025/0349 ,  H04L2025/03624 ,  H04L2025/03687 ,  H04L2025/037 ,  H04L2025/0377 ,  H04L2025/03783

Abstract: Methods and apparatus are provided for adaptive equalization using pattern detection methods. A signal is equalized by detecting one or more predefined patterns in the signal; and then changing one or more parameters of the equalization, such as an equalization adaptation rate, based on the detected predefined patterns. The equalization adaptation rate can be increased upon the detection of one or more predefined patterns and then gradually reduced to a steady state value. Equalization parameters that have been previously obtained for various patterns can optionally be loaded upon detection of a corresponding pattern The equalization can optionally be suppressed for one or more predefined patterns. The patterns can be detected, for example, by searching for the one or more predefined patterns in the signal, or by performing a statistical correlation of the signal to detect the one or more predefined patterns.

Abstract translation: 提供了使用模式检测方法进行自适应均衡的方法和装置。 通过检测信号中的一个或多个预定义模式来使信号相等; 然后基于检测到的预定义模式改变均衡的一个或多个参数，例如均衡适配速率。 可以在检测到一个或多个预定义模式时增加均衡适配速率，然后逐渐减小到稳态值。 先前为各种图案获得的均衡参数可以可选地在检测到对应图案时加载。可以可选地抑制一个或多个预定义模式的均衡。 可以例如通过搜索信号中的一个或多个预定义模式或者通过执行信号的统计相关来检测一个或多个预定义模式来检测模式。

公开(公告)号：US07433434B2

公开(公告)日：2008-10-07

申请号：US10956658

申请日：2004-10-01

Applicant: Carl Steven Gifford ,  John Eric Kleider ,  Chad Scott Bergstrom ,  Jeffery Scott Chuprun ,  Bruce Alan Fette

Inventor： Carl Steven Gifford ,  John Eric Kleider ,  Chad Scott Bergstrom ,  Jeffery Scott Chuprun ,  Bruce Alan Fette

IPC: H04B1/10

CPC classification number: H04L25/0212 ,  H04L5/0023 ,  H04L25/0222 ,  H04L25/0226 ,  H04L25/0236 ,  H04L25/0238 ,  H04L25/025 ,  H04L2025/037

Abstract: Apparatus are provided for a communication signal processing apparatus having a channel estimator configured to generate a first channel estimation at a first time point, a linear predictor coupled to the channel estimator, and an adaptive filter coupled with the linear predictor. The linear predictor is configured to predict a second channel estimation based on a second time point and a channel frequency. The second time point is concurrent or subsequent to the first time point. The second channel estimation includes a first coefficient. The linear predictor includes a first predictor having a sample time point. The first predictor is configured to generate the first coefficient of the second channel estimation based on the sample time point and the second time point. The sample time point is prior to the second time point. The adaptive filter is configured to recursively determine the second channel estimation.

Abstract translation: 提供了一种用于具有信道估计器的通信信号处理装置的装置，其被配置为在第一时间点产生第一信道估计，耦合到信道估计器的线性预测器和与线性预测器耦合的自适应滤波器。 线性预测器被配置为基于第二时间点和信道频率来预测第二信道估计。 第二个时间点是第一个时间点的同时或之后。 第二信道估计包括第一系数。 线性预测器包括具有采样时间点的第一预测器。 第一预测器被配置为基于采样时间点和第二时间点产生第二信道估计的第一系数。 采样时间点在第二个时间点之前。 自适应滤波器被配置为递归地确定第二信道估计。

公开(公告)号：US20080107165A1

公开(公告)日：2008-05-08

申请号：US11593652

申请日：2006-11-07

Applicant: Alex Nicolescu ,  Kenji Suzuki ,  Brian Wall ,  Michael McDonnell

Inventor： Alex Nicolescu ,  Kenji Suzuki ,  Brian Wall ,  Michael McDonnell

IPC: H04L27/01

CPC classification number: H04L25/03057 ,  H04J3/0602 ,  H04J2203/006 ,  H04J2203/0089 ,  H04L2025/037

Abstract: A novel method and apparatus is disclosed, that embeds with, or otherwise makes available to an adaptive equalizer, suitable for use in IEEE 10G-LRM standard compliant receivers, digital logic that monitors some of the Layer 1 and preferably some of the Layer 2 processing that typically occurs after the equalization step during decoding and processing of the record data stream. From this additional logic information, the equalizer is able to make a much more accurate prediction of equalizer convergence by counting processing errors and prove convergence by calculation of BER. The novel method and apparatus are applicable to ASIC embodiments and the complexity of the logic information obtained can be programmably scaled back or enhanced as appropriate in light of the particular communication environment.

Abstract translation: 公开了一种新颖的方法和装置，其嵌入或适用于适用于IEEE 10G-LRM标准兼容接收器的自适应均衡器，数字逻辑监视第1层中的一些，并且优选地监视第2层处理中的一些 这通常在解码和处理记录数据流之后的均衡步骤之后发生。 根据该附加逻辑信息，均衡器能够通过对处理误差进行计数并通过计算BER来证明收敛，从而对均衡器收敛进行更准确的预测。 新颖的方法和装置适用于ASIC实施例，并且根据特定通信环境，所获得的逻辑信息的复杂性可以根据特定的可编程地缩减或增强。

公开(公告)号：US20070147489A1

公开(公告)日：2007-06-28

申请号：US10583813

申请日：2003-12-26

Applicant: Changyin Sun ,  Yunfeng Wang

Inventor： Changyin Sun ,  Yunfeng Wang

IPC: H03K5/159 ,  H03H7/30

CPC classification number: H04L25/03057 ,  H04L2025/0349 ,  H04L2025/037 ,  H04L2025/03732 ,  H04L2025/03815

Abstract: A method for uplink burst equalization in broad wide access system, using the form of combining pre-training and burst equalization, that is, before transmitting user data, training the equalizer, then starting transmitting user data, in which, the equalizer uses decision user data as reference to track the changed wireless channel; if the change of channel exceeds the tracking region of equalizer, for example, the error rate exceeds threshold 1 but doesn't exceed threshold 2, the burst equalization will be performed; if the channel change exceeds the equalization region of equalizer, for example, the error rate exceeds threshold 2, the training will be performed again. By using the form of combining pre-training and burst equalization, setting different thresholds for handoff, the present invention greatly prolongs the intervals of subsequent pre-training process, thereby reducing the times of pre-training and increasing the effective bandwidth; By introducing burst equalization process, the present invention also decreases the requirement of system on operation occasion (for example, the static channel or the interval of bursts should be short), thereby increasing the application occasions of product.

Abstract translation: 一种广域接入系统中上行链路突发均衡的方法，采用组合预训练和突发均衡的方式，即在发送用户数据之前，训练均衡器，然后开始发送用户数据，其中均衡器使用决策用户 数据作为跟踪改变的无线信道的参考; 如果信道的改变超过均衡器的跟踪区域，例如，错误率超过阈值1但不超过阈值2，将执行突发均衡; 如果信道改变超过均衡器的均衡区域，则例如，错误率超过阈值2，则将再次执行训练。 通过使用组合预训练和突发均衡的形式，设置切换的不同阈值，本发明大大延长了后续训练过程的间隔，从而减少了训练前的时间并增加了有效带宽; 通过引入突发均衡处理，本发明还降低了系统在操作场合的要求（例如，静态信道或突发间隔应该较短），从而增加了产品的应用场合。