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公开(公告)号：US20050271138A1
公开(公告)日：2005-12-08
申请号：US11186241
申请日：2005-07-21
申请人： Qian Yu , Venugopal Balasubramonian , Jishnu Bhattacharjee , Debanjan Mukherjee , Abhijit Phanse , Abhijit Shanbhag , Edem Ibragimov , Fabian Giroud
发明人： Qian Yu , Venugopal Balasubramonian , Jishnu Bhattacharjee , Debanjan Mukherjee , Abhijit Phanse , Abhijit Shanbhag , Edem Ibragimov , Fabian Giroud
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.
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2.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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公开(公告)号：US20060104342A1
公开(公告)日：2006-05-18
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
IPC分类号： H03H7/30
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.
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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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5.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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6.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：US06940898B2
公开(公告)日：2005-09-06
申请号：US10290571
申请日：2002-11-08
申请人： Abhijit G. Shanbhag , Qian Yu , Abhijit Phanse , Jishnu Bhattacharjee , Debanjan Mukherjee , Fabian Giroud , Venugopal Balasubramonian
发明人： Abhijit G. Shanbhag , Qian Yu , Abhijit Phanse , Jishnu Bhattacharjee , Debanjan Mukherjee , Fabian Giroud , Venugopal Balasubramonian
CPC分类号： H04L25/0307 , H03H21/0012 , H03H2021/0096 , H04L25/03063 , 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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7.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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8.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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9.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：US07379495B2
公开(公告)日：2008-05-27
申请号：US10789702
申请日：2004-02-27
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： H04B3/46
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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