利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

138 条记录 (耗时 0.023 秒)

    Far-end crosstalk (FEXT) canceller
    2.
    发明授权
    Far-end crosstalk (FEXT) canceller 有权
    远端串扰（FEXT）消除器

    公开(公告)号：US07826568B2

    公开(公告)日：2010-11-02

    申请号：US11617845

    申请日：2006-12-29

    申请人： Naftali Sommer ,  Itay Lusky

    发明人： Naftali Sommer ,  Itay Lusky

    IPC分类号： H03D1/04 ,  H04J1/12

    CPC分类号： H04B3/32 ,  H04B3/235 ,  H04M3/34 ,  H04M11/062

    摘要： A novel and useful mechanism for the detection, estimation and correction of far-end cross talk (FEXT) caused by transmissions over adjacent wire pairs or cables. The detection, estimation and correction technique of the invention can be used to identify and compensate for FEXT impairments in Ethernet and DSL systems. The detection, estimation and correction is performed utilizing one of several techniques including linear forward filtering, backward decision feedback based filtering and a combination thereof. Results of simulations are presented illustrating the performance improvements provided by the present invention.

    摘要翻译： 一种用于通过相邻线对或电缆传输引起的远端串扰（FEXT）的检测，估计和校正的新颖有用的机制。 本发明的检测，估计和校正技术可用于识别和补偿以太网和DSL系统中的FEXT损伤。 使用包括线性正向滤波，基于反向判决反馈的滤波及其组合的几种技术之一来执行检测，估计和校正。 进行模拟的结果示出了本发明提供的性能改进。

    Baseline wander correction for communication receivers
    3.
    发明授权
    Baseline wander correction for communication receivers 有权
    通信接收机的基线漂移校正

    公开(公告)号：US07738567B2

    公开(公告)日：2010-06-15

    申请号：US11617644

    申请日：2006-12-28

    申请人： Mor Miller ,  Ariel Yagil ,  Itay Lusky ,  Liran Brecher ,  Amir Peleg ,  Naftali Sommer

    发明人： Mor Miller ,  Ariel Yagil ,  Itay Lusky ,  Liran Brecher ,  Amir Peleg ,  Naftali Sommer

    IPC分类号： H04B3/04 ,  H04B3/20

    CPC分类号： H04L25/063 ,  H04L25/0266

    摘要： A novel and useful baseline wander correction mechanism for use with transformer coupled baseband communication receivers. Parametric estimation of the transformer model is used estimate and cancel the baseline wander effect. A parametric model is used to model the baseline wander impairment created by the transmitter and receiver transformers as a high pass filter having an exponential decay parameter alpha. A correction signal for both the far end and echo signal paths are calculated and summed to generate a total correction signal. The total correction signal is partitioned into an analog correction signal that is applied to the analog portion of the communications receiver and into a digital correction signal that is similarly applied to the analog portion of the communications receiver.

    摘要翻译： 一种用于变压器耦合基带通信接收机的新颖有用的基线漂移校正机制。 使用变压器模型的参数估计估计并消除基线漂移效应。 参数模型用于将由发射机和接收机变压器产生的基线漂移损伤建模为具有指数衰减参数α的高通滤波器。 对远端和回波信号路径的校正信号进行计算并求和以产生总校正信号。 总校正信号被分割成模拟校正信号，该信号被施加到通信接收机的模拟部分并且被类似地应用于通信接收机的模拟部分的数字校正信号。

    Noise analysis in a communication system
    4.
    发明授权
    Noise analysis in a communication system 有权
    通信系统中的噪声分析

    公开(公告)号：US07492703B2

    公开(公告)日：2009-02-17

    申请号：US10273561

    申请日：2002-10-18

    申请人： Itay Lusky ,  Daniel Wajcer ,  Yosef Bendel ,  Yigal Bitran ,  Naftali Sommer ,  Ofir Shalvi ,  Zvi Reznic ,  Ariel Yagil ,  Ran Senderovitz ,  Eli Haim

    发明人： Itay Lusky ,  Daniel Wajcer ,  Yosef Bendel ,  Yigal Bitran ,  Naftali Sommer ,  Ofir Shalvi ,  Zvi Reznic ,  Ariel Yagil ,  Ran Senderovitz ,  Eli Haim

    IPC分类号： H04J11/00

    CPC分类号： H04L1/20 ,  H04L1/0001 ,  H04L1/0003

    摘要： A system is provided to automatically estimate performance of a receiver for receiving input signals, the input signals having a carrier frequency and a baud rate, from a channel in a communication system and the effect of highly correlated noise cancellation on performance of the receiver, while no active transmission is occurring on the channel, comprising: a digital front end in the receiver for receiving samples of the input signals; a predictor coupled to the digital front end for predicting highly correlated noise in a second sample of the input signal; and a subtraction unit coupled to the predictor for subtracting the predictor output from the second sample to determine residual noise in the second sample. Other systems and methods are disclosed.

    摘要翻译： 提供一种系统，用于自动估计用于从通信系统中的信道接收输入信号，输入信号具有载波频率和波特率的接收机的性能以及高度相关的噪声消除对接收机性能的影响，同时 在频道上没有发生主动传输，包括：接收机中的数字前端，用于接收输入信号的采样; 耦合到所述数字前端的预测器，用于预测所述输入信号的第二样本中的高度相关噪声; 以及减法单元，耦合到所述预测器，用于从所述第二样本减去所述预测器输出，以确定所述第二样本中的残余噪声。 公开了其它系统和方法。

    FAR-END CROSSTALK (FEXT) CANCELLER
    5.
    发明申请
    FAR-END CROSSTALK (FEXT) CANCELLER 有权
    FAR-END CROSSTALK（FEXT）CANCELLER

    公开(公告)号：US20080160915A1

    公开(公告)日：2008-07-03

    申请号：US11617845

    申请日：2006-12-29

    申请人： Naftali Sommer ,  Itay Lusky

    发明人： Naftali Sommer ,  Itay Lusky

    IPC分类号： H04B15/00 ,  H04B1/00

    CPC分类号： H04B3/32 ,  H04B3/235 ,  H04M3/34 ,  H04M11/062

    摘要： A novel and useful mechanism for the detection, estimation and correction of far-end cross talk (FEXT) caused by transmissions over adjacent wire pairs or cables. The detection, estimation and correction technique of the invention can be used to identify and compensate for FEXT impairments in Ethernet and DSL systems. The detection, estimation and correction is performed utilizing one of several techniques including linear forward filtering, backward decision feedback based filtering and a combination thereof. Results of simulations are presented illustrating the performance improvements provided by the present invention

    摘要翻译： 一种用于通过相邻线对或电缆传输引起的远端串扰（FEXT）检测，估计和校正的新颖有用的机制。 本发明的检测，估计和校正技术可用于识别和补偿以太网和DSL系统中的FEXT损伤。 使用包括线性正向滤波，基于反向判决反馈的滤波及其组合的几种技术之一来执行检测，估计和校正。 进行模拟的结果示出了本发明提供的性能改进

    Active link cable diagnostics
    6.
    发明授权
    Active link cable diagnostics 有权
    主动链接电缆诊断

    公开(公告)号：US07769090B2

    公开(公告)日：2010-08-03

    申请号：US11694942

    申请日：2007-03-31

    申请人： Amir Peleg ,  Daniel Wajcer ,  Itay Lusky ,  Naftali Sommer ,  Nohik Semel

    发明人： Amir Peleg ,  Daniel Wajcer ,  Itay Lusky ,  Naftali Sommer ,  Nohik Semel

    IPC分类号： H04B3/00

    CPC分类号： H04B3/48

    摘要： A novel apparatus for and method of estimating the cable length of an active network link. The cable diagnostics mechanism of the invention is particularly suited for use in estimating the length of Ethernet network between two edges when the link is active, i.e. data is being transmitted in both directions simultaneously and the transmission of test pulses is not possible. The cable length estimation mechanism of the present invention is based on a well-known property of the spectrum of the insertion loss of the cable, namely, the linear relationship between the attenuation of the cable at a given frequency in decibels and the cable length. Information characterizing this relationship is extracted and used to determine the length of the cable.

    摘要翻译： 一种用于估计有源网络链路的电缆长度的新型装置和方法。 本发明的电缆诊断机构特别适用于当链路处于活动状态时估计两个边缘之间的以太网网络的长度，即同时在两个方向上发送数据，并且测试脉冲的传输是不可能的。 本发明的电缆长度估计机构是基于电缆的插入损耗频谱的众所周知的特性，即以给定频率以分贝计的电缆的衰减与电缆长度之间的线性关系。 提取表征该关系的信息，并用于确定电缆的长度。

    BASELINE WANDER CORRECTION FOR COMMUNICATION RECEIVERS
    7.
    发明申请
    BASELINE WANDER CORRECTION FOR COMMUNICATION RECEIVERS 有权
    用于通信接收机的基线宽带校正

    公开(公告)号：US20080159415A1

    公开(公告)日：2008-07-03

    申请号：US11617644

    申请日：2006-12-28

    申请人： Mor Miller ,  Ariel Yagil ,  Itay Lusky ,  Liran Brecher ,  Amir Peleg ,  Naftali Sommer

    发明人： Mor Miller ,  Ariel Yagil ,  Itay Lusky ,  Liran Brecher ,  Amir Peleg ,  Naftali Sommer

    IPC分类号： H04B3/04

    CPC分类号： H04L25/063 ,  H04L25/0266

    摘要： A novel and useful baseline wander correction mechanism for use with transformer coupled baseband communication receivers. Parametric estimation of the transformer model is used estimate and cancel the baseline wander effect. A parametric model is used to model the baseline wander impairment created by the transmitter and receiver transformers as a high pass filter having an exponential decay parameter alpha. A correction signal for both the far end and echo signal paths are calculated and summed to generate a total correction signal. The total correction signal is partitioned into an analog correction signal that is applied to the analog portion of the communications receiver and into a digital correction signal that is similarly applied to the analog portion of the communications receiver.

    摘要翻译： 一种用于变压器耦合基带通信接收机的新颖有用的基线漂移校正机制。 使用变压器模型的参数估计估计并消除基线漂移效应。 参数模型用于将由发射机和接收机变压器产生的基线漂移损伤建模为具有指数衰减参数α的高通滤波器。 对远端和回波信号路径的校正信号进行计算并求和以产生总校正信号。 总校正信号被分割成模拟校正信号，该信号被施加到通信接收机的模拟部分并且被类似地应用于通信接收机的模拟部分的数字校正信号。

    Phase, frequency and gain characterization and mitigation in SCDMA burst receiver using multi-pass processing
    9.
    发明授权
    Phase, frequency and gain characterization and mitigation in SCDMA burst receiver using multi-pass processing 有权
    使用多通道处理的SCDMA突发接收机中的相位，频率和增益表征和抑制

    公开(公告)号：US07209513B2

    公开(公告)日：2007-04-24

    申请号：US10437480

    申请日：2003-05-14

    申请人： Naftali Sommer ,  Itay Lusky ,  Mor Miller

    发明人： Naftali Sommer ,  Itay Lusky ,  Mor Miller

    IPC分类号： H04B1/69 ,  H04L27/06

    CPC分类号： H04L27/38 ,  H04B2001/70706 ,  H04L2027/0057

    摘要： A method and apparatus provide phase, frequency and gain characterization and mitigation in a synchronized code division multiple access (SCDMA) burst receiver via use of dedicated phase and frequency correction loops that implemented to deal with the unique characteristics of a SCDMA signal. The way coded and un-coded bits are interleaved within a given frame requires that all symbols related to that frame be captured in a dedicated storage medium such as a RAM prior to the beginning of the data processing. The method and apparatus substantially eliminate gain, phase, and frequency, among other impairments caused by the transmitter, channel and analog parts of the SCDMA burst receiver.

    摘要翻译： 一种方法和装置通过使用专门的相位和频率校正环来提供同步码分多址（SCDMA）突发接收机中的相位，频率和增益表征和减轻，以实现以处理SCDMA信号的独特特性。 编码和未编码比特在给定帧内进行交织的方式要求，在数据处理开始之前，将所有与该帧有关的符号在诸如RAM之类的专用存储介质中进行捕获。 所述方法和装置基本上消除了由SCDMA突发接收机的发射机，信道和模拟部分引起的其他损伤之外的增益，相位和频率。