公开(公告)号：US08743939B2

公开(公告)日：2014-06-03

申请号：US12215222

申请日：2008-06-26

申请人： Xiaopeng Chen ,  Runsheng He ,  Shuran Wei

发明人： Xiaopeng Chen ,  Runsheng He ,  Shuran Wei

IPC分类号： H03H7/30 ,  H03H7/40 ,  H03K5/159

CPC分类号： H04B3/32 ,  H04B3/231

摘要： A nonlinear echo compensator comprises a mapping circuit that includes a weighting circuit that generates a weighted signal based on a current symbol and a prior symbol and a function generating circuit that selects one of N functions based on the weighted signal, where N is an integer greater than one. The mapping circuit generates a driving signal based on the selected one of the N functions and the weighted signal. A canceling circuit generates a nonlinear echo compensation signal based on the driving signal.

摘要翻译： 非线性回波补偿器包括映射电路，该映射电路包括基于当前符号和先前符号产生加权信号的加权电路，以及基于加权信号选择N个函数之一的函数产生电路，其中N是更大的整数 比一个。 映射电路根据N个功能和加权信号中选择的一个产生驱动信号。 消除电路基于驱动信号产生非线性回波补偿信号。

公开(公告)号：US07409057B1

公开(公告)日：2008-08-05

申请号：US10189321

申请日：2002-07-03

申请人： Xiaopeng Chen ,  Runsheng He ,  Shuran Wei

发明人： Xiaopeng Chen ,  Runsheng He ,  Shuran Wei

IPC分类号： H04M9/08

CPC分类号： H04B3/32 ,  H04B3/231

摘要： A nonlinear echo compensator compensates for nonlinear echo in a transceiver including a transmitter line driver with current cells that are operated in a Class B operating mode. A mapping circuit generates a pattern dependent driving signal. A coefficient generator generates a compensator coefficient. A canceling circuit communicates with the mapping circuit and the coefficient generator and compensates for nonlinear echo in a received signal based on the pattern dependent driving signal and the compensator coefficient.

摘要翻译： 非线性回波补偿器补偿收发器中的非线性回波，包括具有在B类操作模式下操作的当前单元的发射机线路驱动器。 映射电路产生与图形相关的驱动信号。 系数发生器产生补偿系数。 取消电路与映射电路和系数发生器通信，并且基于模式相关的驱动信号和补偿器系数来补偿接收信号中的非线性回波。

公开(公告)号：US20080267327A1

公开(公告)日：2008-10-30

申请号：US12215222

申请日：2008-06-26

申请人： Xiaopeng Chen ,  Runsheng He ,  Shuran Wei

发明人： Xiaopeng Chen ,  Runsheng He ,  Shuran Wei

IPC分类号： H03D1/04

CPC分类号： H04B3/32 ,  H04B3/231

摘要： A nonlinear echo compensator comprises a mapping circuit that includes a weighting circuit that generates a weighted signal based on a current symbol and a prior symbol and a function generating circuit that selects one of N functions based on the weighted signal, where N is an integer greater than one. The mapping circuit generates a driving signal based on the selected one of the N functions and the weighted signal. A canceling circuit generates a nonlinear echo compensation signal based on the driving signal.

摘要翻译： 非线性回波补偿器包括映射电路，该映射电路包括基于当前符号和先前符号产生加权信号的加权电路，以及基于加权信号选择N个函数之一的函数产生电路，其中N是更大的整数 比一个。 映射电路根据N个功能和加权信号中选择的一个产生驱动信号。 消除电路基于驱动信号产生非线性回波补偿信号。

公开(公告)号：US08270394B1

公开(公告)日：2012-09-18

申请号：US12345440

申请日：2008-12-29

申请人： Xiaopeng Chen ,  Runsheng He

发明人： Xiaopeng Chen ,  Runsheng He

IPC分类号： H04B1/06

CPC分类号： H04B3/32 ,  H04B3/23

摘要： Methods and apparatus describe techniques for reducing interference signals in a communication signal. An apparatus includes, in at least one aspect, a transceiver circuit to receive a communication signal that includes one or more interference signals and a compensation circuit to generate a compensation signal to compensate for the one or more interference signals in the communication signal based on one or more cancellation coefficients and one or more data symbols.

摘要翻译： 方法和装置描述了用于减少通信信号中的干扰信号的技术。 一种装置在至少一个方面包括收发器电路，用于接收包括一个或多个干扰信号的通信信号和补偿电路，以产生补偿信号，以补偿通信信号中的一个或多个干扰信号 或更多的取消系数和一个或多个数据符号。

公开(公告)号：US07471670B1

公开(公告)日：2008-12-30

申请号：US10762153

申请日：2004-01-20

申请人： Xiaopeng Chen ,  Runsheng He

发明人： Xiaopeng Chen ,  Runsheng He

IPC分类号： H04B1/06

CPC分类号： H04B3/32 ,  H04B3/23

摘要： Methods and apparatus describe techniques for reducing interference signals in a communication signal. A communication signal is received through a receiver. The communication signal contains an interference signal. A digital replica of the interference signal is generated, the digital replica is converted into a corresponding analog replica of the interference signal. The analog replica of the interference signal is subtracted from the communication signal.

摘要翻译： 方法和装置描述了用于减少通信信号中的干扰信号的技术。 通过接收机接收通信信号。 通信信号包含干扰信号。 产生干扰信号的数字副本，将数字副本转换为相应的干扰信号的模拟副本。 从通信信号中减去干扰信号的模拟副本。

公开(公告)号：US08787861B1

公开(公告)日：2014-07-22

申请号：US13607547

申请日：2012-09-07

申请人： Xiaopeng Chen ,  Runsheng He

发明人： Xiaopeng Chen ,  Runsheng He

IPC分类号： H04B1/10

CPC分类号： H04B3/32 ,  H04B3/23

摘要： In some implementations, an apparatus includes an echo canceller that generates an echo interference compensation signal that compensates for an echo interference signal in a communication signal, a crosstalk canceller that generates a crosstalk interference compensation signal that compensates for a crosstalk interference signal in the communication signal, and a combiner that generates a combined interference compensation signal based on the echo interference compensation signal and the crosstalk interference compensation signal.

摘要翻译： 在一些实施方式中，一种装置包括产生补偿通信信号中的回波干扰信号的回波干扰补偿信号的回波抵消器，产生用于补偿通信信号中的串扰干扰信号的串扰干扰补偿信号的串扰消除器 以及基于回波干扰补偿信号和串扰干扰补偿信号产生组合干扰补偿信号的组合器。

公开(公告)号：US08712034B1

公开(公告)日：2014-04-29

申请号：US13476418

申请日：2012-05-21

申请人： Xiaopeng Chen ,  Runsheng He

发明人： Xiaopeng Chen ,  Runsheng He

IPC分类号： H04M9/08

CPC分类号： H04B3/32 ,  H04B3/23

摘要： An adaptive analog echo/near-end crosstalk (NEXT) cancellation system includes a processor configured to receive a first digital signal corresponding to a first signal received by the system, receive a second digital signal corresponding to a second signal transmitted by the system, and generate a first error control signal based on each of the first digital signal and the second digital signal. A cancellation device is configured to generate a second error control signal based on a first analog signal corresponding to the first signal. The cancellation device selectively outputs the second error control signal or the first error control signal based on whether the system is operating in a first mode or a second mode, respectively. The cancellation device selectively outputs a cancellation signal according to one of the second error control signal and the first error control signal, and a second analog signal corresponding to the second signal.

摘要翻译： 自适应模拟回波/近端串扰（NEXT）消除系统包括：处理器，被配置为接收对应于由系统接收到的第一信号的第一数字信号;接收对应于系统发送的第二信号的第二数字信号;以及 基于第一数字信号和第二数字信号中的每一个产生第一误差控制信号。 取消装置被配置为基于与第一信号相对应的第一模拟信号来产生第二错误控制信号。 取消装置基于系统是否分别以第一模式或第二模式操作来选择性地输出第二错误控制信号或第一错误控制信号。 取消装置根据第二误差控制信号和第一误差控制信号之一选择性地输出消除信号，以及对应于第二信号的第二模拟信号。

公开(公告)号：US08203975B1

公开(公告)日：2012-06-19

申请号：US12215967

申请日：2008-07-01

申请人： Xiaopeng Chen ,  Runsheng He

发明人： Xiaopeng Chen ,  Runsheng He

IPC分类号： H04L12/16 ,  H04B1/38 ,  H04B3/20 ,  H04B15/00

CPC分类号： H04B3/32 ,  H04B3/23

摘要： A transceiver includes an analog front end (AFE) device and first, second, third, and fourth transmitters. A digital signal processor (DSP) receives digital receive signal and digital transmit signals and generates a shared error control signal and first, second, third, and fourth individual error control signals. An echo canceller system generates an estimated echo signal. First, second, and third NEXT canceller systems generate first, second, and third estimated NEXT signals, respectively, each based on the second analog receive signal and respective ones of the analog transmit signals from the second, third, and fourth transmitters during the first mode and each based on the shared error control signal, respective ones of the second, third, and fourth individual error control signals, and the respective ones of the analog transmit signals from the second, third, and fourth transmitters during the second mode.

摘要翻译： 收发器包括模拟前端（AFE）装置和第一，第二，第三和第四发射器。 数字信号处理器（DSP）接收数字接收信号和数字发射信号，并产生共用的误差控制信号和第一，第二，第三和第四单独的误差控制信号。 回波消除器系统产生估计的回波信号。 第一，第二和第三NEXT消除器系统分别产生第一，第二和第三估计的NEXT信号，每个NEXT信号分别基于第二模拟接收信号和来自第二，第三和第四发射机的模拟发射信号在第一 模式，并且各自基于共享误差控制信号，第二，第三和第四单独误差控制信号中的相应的，以及在第二模式期间来自第二，第三和第四发射器的模拟发射信号中的相应的。

公开(公告)号：US07688968B1

公开(公告)日：2010-03-30

申请号：US10942761

申请日：2004-09-16

申请人： Xiaopeng Chen ,  Runsheng He

发明人： Xiaopeng Chen ,  Runsheng He

IPC分类号： H04M9/08

CPC分类号： H04B3/32 ,  H04B3/23

摘要： An adaptive analog echo/near-end crosstalk (NEXT) cancellation system includes a selector that outputs a first error control signal when a first receive signal does not include a remotely transmitted signal and a second error control signal when the first receive signal includes a remotely transmitted signal. An echo/NEXT cancellation module communicates with the selector and generates an estimated echo/NEXT signal based on the first error control signal and a first transmit signal when the first receive signal does not include a remotely transmitted signal and based on the second error control signal and the first transmit signal when the first receive signal includes a remotely transmitted signal. A summing module receives the first receive signal and the estimated echo/NEXT signal and generates an echo/NEXT filtered receive signal by subtracting the estimated echo/NEXT signal from the first receive signal.

摘要翻译： 自适应模拟回波/近端串扰（NEXT）消除系统包括：当第一接收信号不包括远程发送信号时输出第一误差控制信号的选择器和当第一接收信号包括远程发送信号时的第二错误控制信号 传输信号。 回波/ NEXT取消模块与选择器进行通信，并且当第一接收信号不包括远程发送的信号并基于第二误差控制信号时，基于第一误差控制信号和第一发射信号产生估计回波/ NEXT信号 以及当第一接收信号包括远程发送信号时的第一发送信号。 求和模块接收第一接收信号和估计的回波/ NEXT信号，并通过从第一接收信号减去估计的回波/ NEXT信号来产生回波/ NEXT滤波的接收信号。

公开(公告)号：US20070206707A1

公开(公告)日：2007-09-06

申请号：US11367026

申请日：2006-03-01

申请人： Xiaopeng Chen

发明人： Xiaopeng Chen

IPC分类号： H03D1/24

CPC分类号： H04L27/3845 ,  H04L25/03057 ,  H04L2025/0342 ,  H04L2025/03617

摘要： Methods and apparatuses for blind equalizers with multiple constant modules. In one embodiment, a circuit, includes: a filter to produce an output based on an input that represents a symbol being received, the symbol being one of a Quadrature Amplitude Modulation (QAM) constellation; a decision engine coupled to the filter to generate a result indicating one region of a plurality of regions in a QAM constellation diagram, the output of the filter being in the indicated region which includes a plurality of symbols of different radii in the constellation diagram; and an error reduction engine coupled to the decision engine and the filter to reduce a difference between a selected one of a plurality of constants and a modulus of the output; where each of the plurality of constants correspond to one of the plurality of regions; and the selected one of the plurality of constants is selected according to the result of the decision engine.

摘要翻译： 具有多个恒定模块的盲均衡器的方法和装置。 在一个实施例中，电路包括：滤波器，用于基于表示正在接收的符号的输入产生输出，该符号是正交幅度调制（QAM）星座中的一个; 耦合到所述滤波器以产生指示QAM星座图中的多个区域的一个区域的结果的判定引擎，所述滤波器的输出在所述指示区域中，所述指示区域包括星座图中的不同半径的多个符号; 以及错误减少引擎，其耦合到所述决策引擎和所述过滤器，以减少所述多个常数中的所选择的一个和所述输出的模数之间的差; 其中所述多个常数中的每一个对应于所述多个区域中的一个; 并且根据判定引擎的结果选择多个常数中的所选择的一个。