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1. 发明授权

US07289557B2 Adaptive equalization using a conditional update sign-sign least mean square algorithm 有权
标题翻译：使用条件更新符号最小均方算法进行自适应均衡
公开(公告)号：US07289557B2
公开(公告)日：2007-10-30
申请号：US10660228
申请日：2003-09-10
申请人： Ganesh Balamurugan , Bryan K. Casper , James E. Jaussi , Stephen R. Mooney
发明人： Ganesh Balamurugan , Bryan K. Casper , James E. Jaussi , Stephen R. Mooney
IPC分类号： H03D3/22 , H04L27/22
CPC分类号： H03H21/0043 , H03H21/0001 , H03H2021/0065 , H04L25/03038 , H04L25/03885 , H04L2025/03477 , H04L2025/03617
摘要： An adaptive equalizer finite impulse response (FIR) filter for high-speed communication channels with modest complexity, where the filter is iteratively updated during a training sequence by a circuit performing the update: h(t+1)= h(t)+μ[sgn{d(t)}−sgn{z(t)−Kd(t)}]sgn{ x(t)}, where h(t) is the filter vector representing the filter taps of the FIR filter, x(t) is the data vector representing present and past samples of the received data x(t), d(t) is the desired data used for training, z(t) is the output of the FIR filter, μ determines the memory or window size of the adaptation, and K is a scale factor taking into account practical limitations of the communication channel, receiver, and equalizer. Furthermore, a procedure and circuit structure is provided for calibrating the scale factor K.
摘要翻译：用于具有适度复杂度的高速通信信道的自适应均衡器有限脉冲响应（FIR）滤波器，其中通过执行更新的电路在训练序列期间迭代地更新滤波器：<？in-line-formula description =“In-line 公式“end =”lead“？> h（t + 1）= h（t）+ mu [sgn {d（t）} - t）-Kd（t）}] sgn { x（t）}，<？in-line-formula description =“In-line Formulas”end =“tail”？> OSTYLE =“SINGLE”> h（t）是表示FIR滤波器的滤波器抽头的滤波器向量，x（t）是表示接收数据的当前和过去采样的数据x（t） t），d（t）是用于训练的期望数据，z（t）是FIR滤波器的输出，mu决定适配的存储器或窗口大小，K是考虑到实际限制的比例因子通信信道，接收机和均衡器。此外，提供了用于校准比例因子K的过程和电路结构。

2. 发明申请

US20050285667A1 Sign-sign least means square filter 有权
标题翻译：符号最小的意思是方形滤波器
公开(公告)号：US20050285667A1
公开(公告)日：2005-12-29
申请号：US10879417
申请日：2004-06-28
申请人： James Jaussi , Bryan Casper , Ganesh Balamuragan , Stephen Mooney
发明人： James Jaussi , Bryan Casper , Ganesh Balamuragan , Stephen Mooney
IPC分类号： H03B1/00 , H03H21/00
CPC分类号： H03H21/0043 , H03H21/0001 , H03H2021/0065
摘要： In some embodiments, an adaptive filter employs two adaptation modes, where during one adaptation mode the adaptive filter is updated only when the received training sample is a first binary value and during the other adaptation mode the adaptive filter is updated only when the received sample is a second binary value. Each adaptation mode provides a set of filter weights, and these two sets of filter weights are averaged to provide an adapted set of filter weights. The use of two adaptation mode allows for a clock boundary in which the digital portion of the filter operates at a lower clock rate than the analog portion. In other embodiments, a filter architecture is described for providing the algebraic signs of the received data samples, important for sign-sign least means square filtering algorithms. In other embodiments, a filter architecture is described in which efficient use is made of voltage-to-current converters so as to achieve a high throughput rate during filtering. Embodiments of the present invention have application to channel equalization.
摘要翻译：在一些实施例中，自适应滤波器采用两种适应模式，其中在一个自适应模式期间，只有当所接收的训练样本是第一二进制值时才自动滤波器被更新，并且在另一自适应模式期间，仅当所接收的样本是第二个二进制值。每个适配模式提供一组滤波器权重，并且将这两组滤波器权重进行平均以提供一组适用的滤波器权重。使用两个适配模式允许滤波器的数字部分以比模拟部分更低的时钟速率工作的时钟边界。在其他实施例中，描述了用于提供接收数据样本的代数符号的滤波器架构，对于符号最小均方滤波算法而言是重要的。在其他实施例中，描述了一种滤波器架构，其中有效地使用电压 - 电流转换器，以便在滤波期间实现高吞吐率。本发明的实施例具有对信道均衡的应用。

3. 发明授权

US07286006B2 Sign-sign least means square filter 有权
标题翻译：符号最小的意思是方形滤波器
公开(公告)号：US07286006B2
公开(公告)日：2007-10-23
申请号：US10879417
申请日：2004-06-28
申请人： James E. Jaussi , Bryan K. Casper , Ganesh Balamurugan , Stephen R. Mooney
发明人： James E. Jaussi , Bryan K. Casper , Ganesh Balamurugan , Stephen R. Mooney
IPC分类号： H03K5/00
CPC分类号： H03H21/0043 , H03H21/0001 , H03H2021/0065
摘要： In some embodiments, an adaptive filter employs two adaptation modes, where during one adaptation mode the adaptive filter is updated only when the received training sample is a first binary value and during the other adaptation mode the adaptive filter is updated only when the received sample is a second binary value. Each adaptation mode provides a set of filter weights, and these two sets of filter weights are averaged to provide an adapted set of filter weights. The use of two adaptation mode allows for a clock boundary in which the digital portion of the filter operates at a lower clock rate than the analog portion. In other embodiments, a filter architecture is described for providing the algebraic signs of the received data samples, important for sign-sign least means square filtering algorithms. In other embodiments, a filter architecture is described in which efficient use is made of voltage-to-current converters so as to achieve a high throughput rate during filtering. Embodiments of the present invention have application to channel equalization.
摘要翻译：在一些实施例中，自适应滤波器采用两种适应模式，其中在一个自适应模式期间，只有当所接收的训练样本是第一二进制值时才自动滤波器被更新，并且在另一自适应模式期间，仅当所接收的样本是第二个二进制值。每个适配模式提供一组滤波器权重，并且将这两组滤波器权重进行平均以提供一组适用的滤波器权重。使用两个适配模式允许滤波器的数字部分以比模拟部分更低的时钟速率工作的时钟边界。在其他实施例中，描述了用于提供接收数据样本的代数符号的滤波器架构，对于符号最小均方滤波算法而言是重要的。在其他实施例中，描述了一种滤波器架构，其中有效地使用电压 - 电流转换器，以便在滤波期间实现高吞吐率。本发明的实施例具有对信道均衡的应用。

4. 发明申请

US20170279428A1 SYSTEM AND METHOD FOR SETTING ANALOG FRONT END DC GAIN 审中-公开
公开(公告)号：US20170279428A1
公开(公告)日：2017-09-28
申请号：US15621979
申请日：2017-06-13
申请人： Samsung Display Co., Ltd.
发明人： Gaurav Malhotra , Amir Amirkhany
IPC分类号： H03G3/30 , H04B1/16 , H04L25/03
CPC分类号： H03G3/3036 , H03H2021/0065 , H04B1/16 , H04L25/03057 , H04L25/03114 , H04L25/03885 , H04L2025/03636
摘要： A system and method for setting analog front end in a serial receiver. The serial receiver includes a decision feedback equalizer. During initialization, taps of the decision feedback equalizer other than the zeroth tap are disabled, and the zeroth tap is used to estimate the amplitude of the signal at the output of the analog front end. The analog front end gain is iteratively adjusted until the estimated value of the zeroth tap is within a set range.

5. 发明申请

US20050053125A1 Adaptive equalization using a conditional update sign-sign least mean square algorithm 有权
标题翻译：使用条件更新符号最小均方算法进行自适应均衡
公开(公告)号：US20050053125A1
公开(公告)日：2005-03-10
申请号：US10660228
申请日：2003-09-10
申请人： Ganesh Balamurugan , Bryan Casper , James Jaussi , Stephen Mooney
发明人： Ganesh Balamurugan , Bryan Casper , James Jaussi , Stephen Mooney
IPC分类号： H03H21/00 , H04L25/03 , H03K5/159
CPC分类号： H03H21/0043 , H03H21/0001 , H03H2021/0065 , H04L25/03038 , H04L25/03885 , H04L2025/03477 , H04L2025/03617
摘要： An adaptive equalizer finite impulse response (FIR) filter for high-speed communication channels with modest complexity, where the filter is iteratively updated during a training sequence by a circuit performing the update: {overscore (h)}(t+1)={overscore (h)}(t)+μ[sgn{d(t)}−sgn{z(t)−Kd(t)}]sgn{{overscore (x)}(t)}, where {overscore (h)}(t) is the filter vector representing the filter taps of the FIR filter, {overscore (x)}(t) is the data vector representing present and past samples of the received data x(t), d(t) is the desired data used for training, z(t) is the output of the FIR filter, μ determines the memory or window size of the adaptation, and K is a scale factor taking into account practical limitations of the communication channel, receiver, and equalizer. Furthermore, a procedure and circuit structure is provided for calibrating the scale factor K.
摘要翻译：用于具有适度复杂度的高速通信信道的自适应均衡器有限脉冲响应（FIR）滤波器，其中在训练序列期间通过执行更新的电路迭代地更新滤波器：{overscore（h（t + 1）= {overscore（ h（t）+ mu [sgn {d（t）} - sgn {z（t）-Kd（t）}] sgn {{overscore（x（t）}，其中{overscore（h（t）表示FIR滤波器的滤波器抽头的向量{overscore（x（t））是表示接收数据x（t）的当前和过去样本的数据向量，d（t）是用于训练的期望数据，z ）是FIR滤波器的输出，mu确定适配的存储器或窗口大小，K是考虑到通信信道，接收机和均衡器的实际限制的比例因子，并且提供了一个过程和电路结构用于校准比例因子K.

6. 发明授权

US09680436B1 System and method for setting analog front end DC gain 有权
公开(公告)号：US09680436B1
公开(公告)日：2017-06-13
申请号：US15083211
申请日：2016-03-28
申请人： Samsung Display Co., Ltd.
发明人： Gaurav Malhotra , Amir Amirkhany
IPC分类号： H03G3/30 , H04B1/16 , H04L25/03
CPC分类号： H03G3/3036 , H03H2021/0065 , H04B1/16 , H04L25/03057 , H04L25/03114 , H04L25/03885 , H04L2025/03636
摘要： A system and method for setting analog front end in a serial receiver. The serial receiver includes a decision feedback equalizer. During initialization, taps of the decision feedback equalizer other than the zeroth tap are disabled, and the zeroth tap is used to estimate the amplitude of the signal at the output of the analog front end. The analog front end gain is iteratively adjusted until the estimated value of the zeroth tap is within a set range.

7. 发明授权

US07313181B2 Calibration of scale factor in adaptive equalizers 有权
标题翻译：自适应均衡器中比例因子校准
公开(公告)号：US07313181B2
公开(公告)日：2007-12-25
申请号：US10660415
申请日：2003-09-10
申请人： Ganesh Balamurugan , Bryan K. Casper , James E. Jaussi , Stephen R. Mooney
发明人： Ganesh Balamurugan , Bryan K. Casper , James E. Jaussi , Stephen R. Mooney
IPC分类号： H03H7/30 , G06F17/10
CPC分类号： H04L25/03038 , H03H21/0001 , H03H2021/0065 , H04L2025/03477
摘要： An adaptive equalizer finite impulse response (FIR) filter for high-speed communication channels with modest complexity, where the filter is iteratively updated during a training sequence by a circuit performing the update: h(t+1)= h(t)+μ[sgn{d(t)}−sgn{z(t)−Kd(t)}]sgn{ x(t)}, where h(t) is the filter vector representing the filter taps of the FIR filter, x(t) is the data vector representing present and past samples of the received data x(t), d(t) is the desired data used for training, z(t) is the output of the FIR filter, μ determines the memory or window size of the adaptation, and K is a scale factor taking into account practical limitations of the communication channel, receiver, and equalizer. Furthermore, a procedure and circuit structure is provided for calibrating the scale factor K.
摘要翻译：用于具有适度复杂度的高速通信信道的自适应均衡器有限脉冲响应（FIR）滤波器，其中通过执行更新的电路在训练序列期间迭代地更新滤波器： h（t + 1 ）= h（t）+ mu [sgn {d（t-sgn {z（t）-Kd（t）sgn { x（t）}，其中 h（t）是表示FIR滤波器的滤波器抽头的滤波器向量， x（t）是表示接收到的当前和过去样本的数据向量数据x（t），d（t）是用于训练的期望数据，z（t）是FIR滤波器的输出，μ确定适配的存储器或窗口大小，K是考虑到的比例因子通信信道，接收机和均衡器的实际限制。此外，提供了用于校准比例因子K的过程和电路结构。

8. 发明申请

US20050053126A1 Calibration of scale factor in adaptive equalizers 有权
标题翻译：自适应均衡器中比例因子校准
公开(公告)号：US20050053126A1
公开(公告)日：2005-03-10
申请号：US10660415
申请日：2003-09-10
申请人： Ganesh Balamurugan , Bryan Casper , James Jaussi , Stephen Mooney
发明人： Ganesh Balamurugan , Bryan Casper , James Jaussi , Stephen Mooney
IPC分类号： H03H21/00 , H04L25/03 , H03K5/159
CPC分类号： H04L25/03038 , H03H21/0001 , H03H2021/0065 , H04L2025/03477
摘要： An adaptive equalizer finite impulse response (FIR) filter for high-speed communication channels with modest complexity, where the filter is iteratively updated during a training sequence by a circuit performing the update: {overscore (h)}(t+1)={overscore (h)}(t)+μ[sgn{d(t)}−sgn{z(t)−Kd(t)}]sgn{{overscore (x)}(t)}, where {overscore (h)}(t) is the filter vector representing the filter taps of the FIR filter, {overscore (x)}(t) is the data vector representing present and past samples of the received data x(t), d(t) is the desired data used for training, z(t) is the output of the FIR filter, μ determines the memory or window size of the adaptation, and K is a scale factor taking into account practical limitations of the communication channel, receiver, and equalizer. Furthermore, a procedure and circuit structure is provided for calibrating the scale factor K.
摘要翻译：用于具有适度复杂度的高速通信信道的自适应均衡器有限脉冲响应（FIR）滤波器，其中在训练序列期间通过执行更新的电路迭代地更新滤波器：{overscore（h（t + 1）= {overscore（ h（t）+ mu [sgn {d（t）} - sgn {z（t）-Kd（t）}] sgn {{overscore（x（t）}，其中{overscore（h（t）表示FIR滤波器的滤波器抽头的向量{overscore（x（t））是表示接收数据x（t）的当前和过去样本的数据向量，d（t）是用于训练的期望数据，z ）是FIR滤波器的输出，mu确定适配的存储器或窗口大小，K是考虑到通信信道，接收机和均衡器的实际限制的比例因子，并且提供了一个过程和电路结构用于校准比例因子K.

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