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1.发明授权Adaptive signal equalizer with adaptive error timing and precursor/postcursor configuration control 有权自适应信号均衡器，具有自适应误差定时和前置/后端配置控制公开(公告)号：US07266145B2
公开(公告)日：2007-09-04
申请号：US10321876
申请日：2002-12-17
申请人： Venugopal Balasubramonian , Jishnu Bhattacharjee , Edem Ibragimov , Debanjan Mukherjee , Abhijit Phanse , Abhijit G. Shanbhag , Qian Yu
发明人： Venugopal Balasubramonian , Jishnu Bhattacharjee , Edem Ibragimov , Debanjan Mukherjee , Abhijit Phanse , Abhijit G. Shanbhag , Qian Yu
CPC分类号： H04L25/03057 , H03H21/0012 , H03H2021/0096 , H04L7/0029 , H04L7/0062 , H04L7/0079 , H04L2025/0349 , H04L2025/03611
摘要： An adaptive signal equalizer with a feedforward filter in which the feedback error signal and corresponding incoming data signal are dynamically aligned in time using signal interpolation, and further, to control the precursor/postcursor filter taps configuration, thereby producing more adaptive filter tap coefficient signals for significantly improved and robust signal equalization.
摘要翻译： 一种具有前馈滤波器的自适应信号均衡器，其中反馈误差信号和相应的输入数据信号在时间上使用信号插值动态对准，此外，控制前驱/后沿滤波器抽头配置，由此产生更多的自适应滤波器抽头系数信号， 显着改善和鲁棒的信号均衡。
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公开(公告)号：US07627031B2
公开(公告)日：2009-12-01
申请号：US11186241
申请日：2005-07-21
申请人： Qian Yu , Venugopal Balasubramonian , Jishnu Bhattacharjee , Debanjan Mukherjee , Abhijit Phanse , Abhijit G. Shanbhag , Edem Ibragimov , Fabian Giroud
发明人： Qian Yu , Venugopal Balasubramonian , Jishnu Bhattacharjee , Debanjan Mukherjee , Abhijit Phanse , Abhijit G. Shanbhag , Edem Ibragimov , Fabian Giroud
IPC分类号： H03H7/30
CPC分类号： H04L7/0062 , H04L7/0029 , H04L25/03057 , H04L2025/03503
摘要： An apparatus and method for adaptively introducing a compensating signal latency related to a signal latency of a data symbol decision circuit. Adaptive timing control circuitry, including an interpolating mixer implemented as a tapped delay line with correlated tap coefficients, introduces a latency adaptively and substantially matching the latency of the data decision circuit for use within an adaptive equalizer, thereby minimizing the mean-squared error of such decision circuit. This adaptive latency is used in generating the feedback error signal which, in turn, can be used by the feedforward equalizer for dynamically adjusting its adaptive filter tap coefficients.
摘要翻译： 一种用于自适应地引入与数据符号判定电路的信号等待时间相关的补偿信号延迟的装置和方法。 自适应定时控制电路，包括实现为具有相关抽头系数的抽头延迟线的内插混频器，自适应地和基本上匹配数据判决电路的等待时间以在自适应均衡器内使用，从而最小化这样的均方误差 决策电路。 该自适应等待时间用于产生反馈误差信号，反馈误差信号又可由前馈均衡器用于动态调整其自适应滤波器抽头系数。
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3.发明授权Method for robust and stable convergence of blind LMS based adaptation of coefficients for a continuous time FFE-DFE 有权用于连续时间FFE-DFE的基于LMS的盲系数适应系数的稳健和稳定收敛的方法公开(公告)号：US07421022B2
公开(公告)日：2008-09-02
申请号：US11115506
申请日：2005-04-27
申请人： Prashant Choudhary , Venugopal Balasubramonian , Jishnu Bhattacharjee , Debanjan Mukherjee , Abhijit Phanse , Abhijit Shanbhag , Qian Yu
发明人： Prashant Choudhary , Venugopal Balasubramonian , Jishnu Bhattacharjee , Debanjan Mukherjee , Abhijit Phanse , Abhijit Shanbhag , Qian Yu
CPC分类号： H04L25/0307 , H04L2025/03598
摘要： A continuous time electronic dispersion compensation architecture using feed forward equalization and a non-linear decision feedback equalization forms an output signal by a linear combination of successively delayed versions of the input signal and the sliced output signal weighted by appropriate coefficients. A selected number of taps in the mixer used to generate a corresponding number of coefficients for use in the feed forward equalizer are held to a selected voltage to ensure that the coefficients associated with these two taps do not drift. This causes the other coefficients to converge to a unique minimum square error value. In one embodiment the selected voltage is the maximum system voltage.
摘要翻译： 使用前馈均衡和非线性判决反馈均衡的连续时间电子色散补偿架构通过输入信号的连续延迟版本和由适当系数加权的分片输出信号的线性组合形成输出信号。 用于产生用于前馈均衡器的相应数量的系数的混频器中的选定数量的抽头被保持到所选择的电压，以确保与这两个抽头相关联的系数不漂移。 这导致其他系数收敛到唯一的最小平方误差值。 在一个实施例中，所选择的电压是最大系统电压。
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4.发明授权Adaptive signal equalizer with adaptive error timing and precursor/postcursor configuration control 有权自适应信号均衡器，具有自适应误差定时和前置/后端配置控制公开(公告)号：US07421021B2
公开(公告)日：2008-09-02
申请号：US11759720
申请日：2007-06-07
申请人： Venugopal Balasubramonian , Jishnu Bhattacharjee , Edem Ibragimov , Debanjan Mukherjee , Abhijit Phanse , Abhijit Shanbhag , Qian Yu
发明人： Venugopal Balasubramonian , Jishnu Bhattacharjee , Edem Ibragimov , Debanjan Mukherjee , Abhijit Phanse , Abhijit Shanbhag , Qian Yu
CPC分类号： H04L25/03057 , H03H21/0012 , H03H2021/0096 , H04L7/0029 , H04L7/0062 , H04L7/0079 , H04L2025/0349 , H04L2025/03611
摘要： An adaptive signal equalizer with a feedforward filter in which the feedback error signal and corresponding incoming data signal are dynamically aligned in time using signal interpolation, and further, to control the precursor/postcursor filter taps configuration, thereby producing more adaptive filter tap coefficient signals for significantly improved and robust signal equalization.
摘要翻译： 一种具有前馈滤波器的自适应信号均衡器，其中反馈误差信号和相应的输入数据信号在时间上使用信号插值动态对准，此外，控制前驱/后沿滤波器抽头配置，由此产生更多的自适应滤波器抽头系数信号， 显着改善和鲁棒的信号均衡。
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5.发明授权Adaptive coefficient signal generator for adaptive signal equalizers with fractionally-spaced feedback 有权用于具有分数间隔反馈的自适应信号均衡器的自适应系数信号发生器公开(公告)号：US07203233B2
公开(公告)日：2007-04-10
申请号：US11284391
申请日：2005-11-21
申请人： Abhijit Shanbhag , Qian Yu , Abhijit Phanse , Jishnu Bhattacharjee , Debanjan Mukherjee , Fabian Giroud , Venugopal Balasubramonian
发明人： Abhijit Shanbhag , Qian Yu , Abhijit Phanse , Jishnu Bhattacharjee , Debanjan Mukherjee , Fabian Giroud , Venugopal Balasubramonian
CPC分类号： H04L25/03063 , H03H21/0012 , H03H2021/0096 , H04L25/0307 , H04L2025/0349 , H04L2025/03509 , H04L2025/03611
摘要： An adaptive coefficient signal generator for use in an adaptive signal equalizer with fractionally-spaced feedback. The signals representing the feedback tap coefficients are generated in conjunction with a timing interpolation parameter such that the fractionally-spaced feedback circuitry dynamically emulates symbol-spaced feedback circuitry.
摘要翻译： 一种用于具有分数间隔反馈的自适应信号均衡器中的自适应系数信号发生器。 代表反馈抽头系数的信号与定时内插参数一起产生，使得分数间隔的反馈电路动态地仿真符号间隔反馈电路。
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6.发明申请Method for robust and stable convergence of blind LMS based adaptation of coefficients for a continuous time FFE-DFE 有权用于连续时间FFE-DFE的基于LMS的盲系数适应系数的稳健和稳定收敛的方法公开(公告)号：US20060245486A1
公开(公告)日：2006-11-02
申请号：US11115506
申请日：2005-04-27
申请人： Prashant Choudhary , Venugopal Balasubramonian , Jishnu Bhattacharjee , Debanjan Mukherjee , Abhijit Phanse , Abhijit Shanbhag , Qian Yu
发明人： Prashant Choudhary , Venugopal Balasubramonian , Jishnu Bhattacharjee , Debanjan Mukherjee , Abhijit Phanse , Abhijit Shanbhag , Qian Yu
IPC分类号： H03H7/30
CPC分类号： H04L25/0307 , H04L2025/03598
摘要： A continuous time electronic dispersion compensation architecture using feed forward equalization and a non-linear decision feedback equalization forms an output signal by a linear combination of successively delayed versions of the input signal and the sliced output signal weighted by appropriate coefficients. A selected number of taps in the mixer used to generate a corresponding number of coefficients for use in the feed forward equalizer are held to a selected voltage to ensure that the coefficients associated with these two taps do not drift. This causes the other coefficients to converge to a unique minimum square error value. In one embodiment the selected voltage is the maximum system voltage.
摘要翻译： 使用前馈均衡和非线性判决反馈均衡的连续时间电子色散补偿架构通过输入信号的连续延迟版本和由适当系数加权的分片输出信号的线性组合形成输出信号。 用于产生用于前馈均衡器的相应数量的系数的混频器中的选定数量的抽头被保持到所选择的电压，以确保与这两个抽头相关联的系数不漂移。 这导致其他系数收敛到唯一的最小平方误差值。 在一个实施例中，所选择的电压是最大系统电压。
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公开(公告)号：US20050114428A1
公开(公告)日：2005-05-26
申请号：US10724443
申请日：2003-11-26
CPC分类号： H03F3/45183 , H03F2203/45634 , H03F2203/45638 , H03H11/265 , H03H15/02 , H04L2025/03477 , H04L2025/03617
摘要： Systems and methods provide analog delay elements, which may be utilized in isolation or in a cascade. For example, a delay element may include a broadband amplifier and a passive, programmable filter, which may provide a desired magnitude and group delay response over a wide frequency range while being tolerant of process variations.
摘要翻译： 系统和方法提供模拟延迟元件，其可以在隔离或级联中使用。 例如，延迟元件可以包括宽带放大器和无源可编程滤波器，其可以在宽的频率范围内提供期望的幅度和组延迟响应，同时容忍工艺变化。
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公开(公告)号：US08117249B1
公开(公告)日：2012-02-14
申请号：US11926869
申请日：2007-10-29
IPC分类号： G06F17/10
CPC分类号： H03F3/45183 , H03F2203/45634 , H03F2203/45638 , H03H11/265 , H03H15/02 , H04L2025/03477 , H04L2025/03617
摘要： Systems and methods provide analog delay elements, which may be utilized in isolation or in a cascade, such as for use within equalizers or other types of applications. For example, a delay element may include a broadband amplifier and a passive, programmable filter, which may provide a desired magnitude and group delay response over a wide frequency range while being tolerant of process variations. An equalizer, for example, may include the delay element within its feed forward filter and/or within its other circuits, such as within its adaptive coefficient generator or slicer input time-align circuit.
摘要翻译： 系统和方法提供模拟延迟元件，其可以在隔离或级联中使用，例如用于均衡器或其他类型的应用中。 例如，延迟元件可以包括宽带放大器和无源可编程滤波器，其可以在宽的频率范围内提供期望的幅度和组延迟响应，同时容忍工艺变化。 例如，均衡器可以包括其前馈滤波器内和/或其其它电路内的延迟元件，例如在其自适应系数发生器或限幅器输入时间对准电路内。
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9.发明授权Channel monitoring and identification and performance monitoring in a flexible high speed signal processor engine 有权在灵活的高速信号处理器引擎中进行信道监控和识别和性能监控公开(公告)号：US07561617B1
公开(公告)日：2009-07-14
申请号：US11859649
申请日：2007-09-21
申请人： Abhijit G. Shanbhag , Abhijit Phanse , Jishnu Bhattacharjee , Debanjan Mukherjee , Prashant Choudhary , Edem Ibragimov , Venugopal Balasubramonian , Qian Yu , Madabusi Govindarajan
发明人： Abhijit G. Shanbhag , Abhijit Phanse , Jishnu Bhattacharjee , Debanjan Mukherjee , Prashant Choudhary , Edem Ibragimov , Venugopal Balasubramonian , Qian Yu , Madabusi Govindarajan
IPC分类号： H03H7/30
CPC分类号： H04L25/03063 , H04L25/03044 , H04L2025/03617
摘要： Systems and methods are disclosed to provide channel monitoring and/or performance monitoring for a communication channel. For example, in accordance with an embodiment of the present invention, an equalizer is disclosed that equalizes for channel distortions and also provides channel and performance monitoring information, such as for example bandwidth estimation, channel identification, signal-to-noise ratio, chromatic dispersion, and/or polarization-mode dispersion.
摘要翻译： 公开了系统和方法来为通信信道提供信道监测和/或性能监测。 例如，根据本发明的实施例，公开了一种对于信道失真进行均衡的均衡器，并且还提供信道和性能监视信息，例如带宽估计，信道识别，信噪比，色散 ，和/或偏振模色散。
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10.发明申请ADAPTIVE SIGNAL EQUALIZER WITH ADAPTIVE ERROR TIMING AND PRECURSOR/POSTCURSOR CONFIGURATION CONTROL 有权具有自适应错误时序的自适应信号均衡器和前端/ POSTAURSOR配置控制公开(公告)号：US20070230557A1
公开(公告)日：2007-10-04
申请号：US11759720
申请日：2007-06-07
申请人： Venugopal Balasubramonian , Jishnu Bhattacharjee , Edem Ibragimov , Debanjan Mukherjee , Abhijit Phanse , Abhijit Shanbhag , Qian Yu
发明人： Venugopal Balasubramonian , Jishnu Bhattacharjee , Edem Ibragimov , Debanjan Mukherjee , Abhijit Phanse , Abhijit Shanbhag , Qian Yu
IPC分类号： H03H7/40
CPC分类号： H04L25/03057 , H03H21/0012 , H03H2021/0096 , H04L7/0029 , H04L7/0062 , H04L7/0079 , H04L2025/0349 , H04L2025/03611
摘要： An adaptive signal equalizer with a feedforward filter in which the feedback error signal and corresponding incoming data signal are dynamically aligned in time using signal interpolation, and further, to control the precursor/postcursor filter taps configuration, thereby producing more adaptive filter tap coefficient signals for significantly improved and robust signal equalization.
摘要翻译： 一种具有前馈滤波器的自适应信号均衡器，其中反馈误差信号和相应的输入数据信号在时间上使用信号插值动态对准，此外，控制前驱/后沿滤波器抽头配置，由此产生更多的自适应滤波器抽头系数信号， 显着改善和鲁棒的信号均衡。
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