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    Systems and Methods for Mitigating Self-Induced Far-End Crosstalk
    1.
    发明申请
    Systems and Methods for Mitigating Self-Induced Far-End Crosstalk 有权
    减轻自感远端串扰的系统和方法

    公开(公告)号：US20100220823A1

    公开(公告)日：2010-09-02

    申请号：US12713482

    申请日：2010-02-26

    申请人： Pravesh Biyani ,  Laurent Francis Alloin ,  Shankar Prakriya ,  Surendra Prasad ,  Amitkumar Mahadevan

    发明人： Pravesh Biyani ,  Laurent Francis Alloin ,  Shankar Prakriya ,  Surendra Prasad ,  Amitkumar Mahadevan

    IPC分类号： H04B1/10

    CPC分类号： H04B3/32 ,  H04J1/12 ,  H04L2025/03414 ,  H04L2025/03426

    摘要： Systems and methods for partial self-FEXT (far-end crosstalk) are described. One method, among others, comprises determining one or more instantaneous characteristics of an input signal, wherein the one or more instantaneous characteristics comprise one or more of amplitude of the input signal and an energy level of the input signal. The method further comprises selecting one or more disturbers to cancel according to the one or more instantaneous characteristics, wherein selecting one or more disturbers is performed on a per-DMT (discrete multi-tone) symbol basis.

    摘要翻译： 描述了部分自FEXT（远端串扰）的系统和方法。 一种方法包括确定输入信号的一个或多个瞬时特性，其中一个或多个瞬时特性包括输入信号的幅度和输入信号的能级中的一个或多个。 该方法还包括根据一个或多个瞬时特性选择一个或多个干扰器来取消，其中，对每个DMT（离散多音调）符号进行选择一个或多个干扰器。

    Systems and methods of resource allocation for cancellation of crosstalk
    3.
    发明授权
    Systems and methods of resource allocation for cancellation of crosstalk 有权
    用于消除串扰的资源分配的系统和方法

    公开(公告)号：US09042211B2

    公开(公告)日：2015-05-26

    申请号：US12969332

    申请日：2010-12-15

    申请人： Pravesh Biyani ,  Laurent Francis Alloin ,  Shankar Prakriya ,  Surendra Prasad

    发明人： Pravesh Biyani ,  Laurent Francis Alloin ,  Shankar Prakriya ,  Surendra Prasad

    IPC分类号： H04J1/12 ,  H04J3/10

    CPC分类号： H04J3/10 ,  H04B3/32

    摘要： A method implemented in a multi-user communication system is described for performing far-end crosstalk (FEXT) cancellation for each victim user. The method comprises performing dynamic programming to allocate resources according to (N−1) normalized disturber coupling values and difference rate function values associated with N total users in the system involved in partial FEXT cancellation. In accordance with some embodiments, dynamic programming comprises selecting a tone and one or more disturbers to be cancelled for the tone.

    摘要翻译： 描述了在多用户通信系统中实现的方法，用于为每个受害者用户执行远端串扰（FEXT）取消。 该方法包括执行动态规划以根据涉及部分FEXT消除的系统中与N个总用户相关联的（N-1）标准化干扰耦合值和差分率函数值来分配资源。 根据一些实施例，动态规划包括选择音调和要为音调取消的一个或多个干扰器。

    Systems and Methods of Resource Allocation for Cancellation of Crosstalk
    4.
    发明申请
    Systems and Methods of Resource Allocation for Cancellation of Crosstalk 有权
    用于取消串扰的资源分配的系统和方法

    公开(公告)号：US20110150121A1

    公开(公告)日：2011-06-23

    申请号：US12969332

    申请日：2010-12-15

    申请人： Pravesh Biyani ,  Laurent Francis Alloin ,  Shankar Prakriya ,  Surendra Prasad

    发明人： Pravesh Biyani ,  Laurent Francis Alloin ,  Shankar Prakriya ,  Surendra Prasad

    IPC分类号： H04B15/00

    CPC分类号： H04J3/10 ,  H04B3/32

    摘要： A method implemented in a multi-user communication system is described for performing far-end crosstalk (FEXT) cancellation for each victim user. The method comprises performing dynamic programming to allocate resources according to (N−1) normalized disturber coupling values and difference rate function values associated with N total users in the system involved in partial FEXT cancellation. In accordance with some embodiments, dynamic programming comprises selecting a tone and one or more disturbers to be cancelled for the tone.

    摘要翻译： 描述了在多用户通信系统中实现的方法，用于为每个受害者用户执行远端串扰（FEXT）取消。 该方法包括执行动态规划以根据涉及部分FEXT消除的系统中与N个总用户相关联的（N-1）标准化干扰耦合值和差分率函数值来分配资源。 根据一些实施例，动态规划包括选择音调和要为音调取消的一个或多个干扰器。

    Cooperative MIMO for alien noise cancellation (COMAC) for upstream VDSL systems
    5.
    发明授权
    Cooperative MIMO for alien noise cancellation (COMAC) for upstream VDSL systems 有权
    用于上游VDSL系统的外来噪声消除（COMAC）的合作MIMO

    公开(公告)号：US08300803B2

    公开(公告)日：2012-10-30

    申请号：US12100253

    申请日：2008-04-09

    申请人： Pravesh Biyani ,  Amitkumar Mahadevan ,  Patrick Duvaut

    发明人： Pravesh Biyani ,  Amitkumar Mahadevan ,  Patrick Duvaut

    IPC分类号： H04M9/00 ,  H04M1/76 ,  H04M7/00

    CPC分类号： H04L27/2647 ,  H04B3/32

    摘要： Included are embodiments for reducing alien crosstalk. At least one embodiment of a method includes receiving noise data associated with a first user signal on a first tone, receiving noise data associated with a second user signal on the first tone, and receiving at least one alien crosstalk canceller coefficient for the first user on the first tone. Some embodiments include applying the at least one alien crosstalk canceller coefficient to the second user signal to reduce alien crosstalk for the first user signal.

    摘要翻译： 包括减少外来串扰的实施例。 方法的至少一个实施例包括接收与第一音调上的第一用户信号相关联的噪声数据，接收与第一音调上的第二用户信号相关联的噪声数据，以及为第一用户接收至少一个外来串扰消除器系数 第一音 一些实施例包括将至少一个外来串扰消除器系数应用于第二用户信号以减少第一用户信号的外来串扰。

    Systems and Methods for Mitigating the Effects of Upstream Far-End Cross Talk
    7.
    发明申请
    Systems and Methods for Mitigating the Effects of Upstream Far-End Cross Talk 有权
    减轻上游远端交谈影响的系统与方法

    公开(公告)号：US20090122855A1

    公开(公告)日：2009-05-14

    申请号：US12123925

    申请日：2008-05-20

    申请人： Patrick Duvaut ,  Amitkumar Mahadevan ,  Pravesh Biyani ,  Shailendra Singh ,  Satyavardhan Maheshwari

    发明人： Patrick Duvaut ,  Amitkumar Mahadevan ,  Pravesh Biyani ,  Shailendra Singh ,  Satyavardhan Maheshwari

    IPC分类号： H04L27/01 ,  H04L27/06

    CPC分类号： H04L25/03159 ,  H04B3/32 ,  H04L27/2601 ,  H04L2025/03426 ,  H04L2025/03522

    摘要： Systems and methods for mitigating the effects of self-FEXT within an xDSL system are described. At least one embodiment is a method for reducing self-induced far end crosstalk (self-FEXT) in a multiple input multiple output (MIMO) digital subscriber line (xDSL) system. The method comprises deriving an initial value for an off-diagonal multiple input multiple output canceller (ODMC) while the ODMC is inactive and while in data mode. The method further comprises activating the initial ODMC and converging towards an steady-state value for the ODMC by performing an adaptive algorithm to maximize the Shannon's capacity of the system and to reduce upstream self-FEXT. The method also comprises performing bit loading and updating a frequency domain equalizer (FEQ).

    摘要翻译： 描述了在xDSL系统中减轻自身FEXT影响的系统和方法。 至少一个实施例是用于减少多输入多输出（MIMO）数字用户线（xDSL）系统中的自感应远端串扰（self-FEXT）的方法。 该方法包括：当ODMC处于非活动状态并处于数据模式时，得到非对角多输入多输出消除器（ODMC）的初始值。 该方法还包括通过执行自适应算法激活初始ODMC并朝向ODMC的稳态值收敛，以使香农的系统容量最大化并减少上游自FEXT。 该方法还包括执行比特加载和更新频域均衡器（FEQ）。

    Cooperative MIMO for Alien Noise Cancellation (COMAC) for Upstream VDSL Systems
    8.
    发明申请
    Cooperative MIMO for Alien Noise Cancellation (COMAC) for Upstream VDSL Systems 有权
    用于上行VDSL系统的外部噪声消除（COMAC）的合作MIMO

    公开(公告)号：US20090257581A1

    公开(公告)日：2009-10-15

    申请号：US12100253

    申请日：2008-04-09

    申请人： Pravesh Biyani ,  Amitkumar Mahadevan ,  Patrick Duvaut

    发明人： Pravesh Biyani ,  Amitkumar Mahadevan ,  Patrick Duvaut

    IPC分类号： H04M1/74

    CPC分类号： H04L27/2647 ,  H04B3/32

    摘要： Included are embodiments for reducing alien crosstalk. At least one embodiment of a method includes receiving noise data associated with a first user signal on a first tone, receiving noise data associated with a second user signal on the first tone, and receiving at least one alien crosstalk canceller coefficient for the first user on the first tone. Some embodiments include applying the at least one alien crosstalk canceller coefficient to the second user signal to reduce alien crosstalk for the first user signal.

    摘要翻译： 包括减少外来串扰的实施例。 方法的至少一个实施例包括接收与第一音调上的第一用户信号相关联的噪声数据，接收与第一音调上的第二用户信号相关联的噪声数据，以及为第一用户接收至少一个外来串扰消除器系数 第一音 一些实施例包括将至少一个外来串扰消除器系数应用于第二用户信号以减少第一用户信号的外来串扰。