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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：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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2.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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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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4.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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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：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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8.发明申请公开(公告)号：US20070064845A1
公开(公告)日：2007-03-22
申请号：US11553019
申请日：2006-10-26
申请人： Abhijit Phanse , Abhijit Shanbhag
发明人： Abhijit Phanse , Abhijit Shanbhag
IPC分类号： H04B1/10
CPC分类号： H04L25/03057 , H04B10/6971 , H04L25/03038 , H04L25/03878 , H04L2025/03624 , H04L2025/03656 , H04L2025/037
摘要： A compensation circuit and method for reducing ISI products within an electrical data signal corresponding to a detected data signal received via a signal transmission medium introduces distinct compensation effects for individual ISI products within the electrical data signal. Distinct data signal components within the detected data signal and corresponding to such ISI products can be selectively and individually compensated, thereby producing a compensated data signal in which each selected one of such individual data signal components is substantially removed. Individual data signal components or selected combinations of data signal components can be compensated as desired.
摘要翻译： 用于减少与通过信号传输介质接收的检测数据信号相对应的电数据信号内的ISI产品的补偿电路和方法对电数据信号内的各个ISI产品引入不同的补偿效果。 检测到的数据信号中对应于这种ISI产品的不同数据信号分量可以被选择性和单独地补偿，从而产生补偿数据信号，其中基本上去除了这些单个数据信号分量中的每一个。 可以根据需要补偿单个数据信号分量或数据信号分量的选定组合。
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公开(公告)号：US08229027B2
公开(公告)日：2012-07-24
申请号：US12909649
申请日：2010-10-21
CPC分类号： H04L27/368 , H03F1/0222 , H03F1/0266 , H03F1/3211 , H03F1/3247 , H03F1/3258 , H03F3/45183 , H03F2200/102 , H03F2200/369 , H03F2200/451 , H03F2203/45352
摘要： Pre-distortion and memory compensation apparatuses and methods for a non-linear component are provided. The apparatus comprises an adaptive block for generating a plurality of correlation coefficients, which are used to weight a plurality of synthesis work functions to pre-distort a given signal. The adaptive block can be driven by an error signal generated from a feedback signal from the non-linear component output signal and a delayed version of the input signal. The apparatus is capable of being operated directly at radio frequency. Also provided are apparatuses and methods for generation of quadrature signals, transconductance amplification employing negative resistance, variable-gain amplification, and envelope detection.
摘要翻译： 提供了用于非线性分量的预失真和存储器补偿装置和方法。 该装置包括用于产生多个相关系数的自适应块，其用于加权多个合成工作函数以对给定信号进行预失真。 自适应块可以由从非线性分量输出信号的反馈信号和输入信号的延迟版本产生的误差信号驱动。 该装置能够以射频直接操作。 还提供了用于产生正交信号，采用负电阻的跨导放大，可变增益放大和包络检测的装置和方法。
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公开(公告)号：US20060262805A1
公开(公告)日：2006-11-23
申请号：US11397874
申请日：2006-04-03
申请人： Abhijit Shanbhag
发明人： Abhijit Shanbhag
IPC分类号： H04B7/216
CPC分类号： H04J13/18 , H04J13/0048
摘要： A method is taught for transmitting message signals in a communication system having a new call entering the communication system and Walsh codes that can be active and inactive. The method includes dividing the Walsh codes into bins and determining the number of active Walsh codes in the bins. Selecting a Walsh code in accordance with the Walsh code number determination and assigning the selected Walsh code to the new call are set forth.
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