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    BASELINE WANDER CORRECTION FOR COMMUNICATION RECEIVERS
    2.
    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。

    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
    7.
    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。

    Constellation selection in a communication system
    8.
    发明授权
    Constellation selection in a communication system 有权
    通讯系统中的星座选择

    公开(公告)号：US07274735B2

    公开(公告)日：2007-09-25

    申请号：US10273558

    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 ,  Eli Haim

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

    IPC分类号： H04B3/46

    CPC分类号： H04L1/20 ,  H04L1/0001 ,  H04L1/0003 ,  H04L1/0017 ,  H04L1/0019

    摘要： A method is provided to provide data to automatically estimate channel performance in a communication system if a different order constellation is used comprising the steps of: receiving an input signal from the channel; passing the input signal to a slicer having an output signal; determining signal noise by taking the difference between the input signal and output signal; identifying a beginning of a noise event when the signal noise is greater than a predefined first threshold; identifying an end of a noise event when the signal noise is less than a predefined second threshold; and providing for output the beginning of the noise event and the end of the noise event. Other systems and methods are disclosed.

    摘要翻译： 提供一种提供数据以自动估计通信系统中的信道性能的方法，如果使用不同的订单星座包括以下步骤：从信道接收输入信号; 将输入信号传递到具有输出信号的限幅器; 通过取输入信号和输出信号之差来确定信号噪声; 当信号噪声大于预定义的第一阈值时，识别噪声事件的开始; 当信号噪声小于预定义的第二阈值时，识别噪声事件的结束; 并提供输出噪声事件的开始和噪声事件的结束。 公开了其它系统和方法。