公开(公告)号：US20060126707A1

公开(公告)日：2006-06-15

申请号：US11009710

申请日：2004-12-13

申请人： Patrick Duvaut ,  Ehud Langberg ,  Anupama Ramalingam

发明人： Patrick Duvaut ,  Ehud Langberg ,  Anupama Ramalingam

IPC分类号： H04L5/16

CPC分类号： H04B3/32 ,  H04B3/487

摘要： A method and apparatus implements a Virtual Exchange Reference Impact (VERI) technique to define a pattern to shape the spectrum of a cabinet deployed system to minimize its impact, e.g., FEXT, into an exchange deployed system while achieving effective cabinet system performance, e.g., in terms of data transmission rate. The invention shapes the cabinet system to replicate a self-impact of the exchange system on itself based on the known distance of the cabinet from the exchange. The shaping is required when both exchange and cabinet systems share the same bundle and exhibit overlapped bandwidths. A particular example consists of VDSL deployed from remote cabinet impacting ADSL2/ADSL2+ deployed from the exchange.

摘要翻译： 一种方法和装置实现了虚拟交换参考影响（VERI）技术，以定义一种模式来形成柜部署系统的频谱，以将其影响（例如FEXT）最小化到交换部署系统中，同时实现有效的机柜系统性能， 在数据传输率方面。 本发明根据柜与交换机的已知距离对橱柜系统进行整形以将交换系统的自身影响复制到其自身上。 交换和机柜系统共享相同的捆绑包并展示重叠的带宽时，需要进行整形。 一个特定的例子包括从远程机柜部署的VDSL，影响从交换机部署的ADSL2 / ADSL2 +。

公开(公告)号：US20060114976A1

公开(公告)日：2006-06-01

申请号：US11197524

申请日：2005-08-05

申请人： Ehud Langberg ,  Lujing Cai ,  Avi Rapaport

发明人： Ehud Langberg ,  Lujing Cai ,  Avi Rapaport

IPC分类号： H04L5/16 ,  H04K1/10

CPC分类号： H04B3/23

摘要： An economic low-complexity system and method for echo cancellation are disclosed. The system and method are particularly suited for multi-carrier VDSL using the U0 band. The techniques taught herein may be implemented in VDSL and VDSL2 systems and used to receive signals in three bands (e.g., U0, U1 and U2) simultaneously.

摘要翻译： 公开了用于回波消除的经济低复杂度系统和方法。 该系统和方法特别适用于使用U0频段的多载波VDSL。 本文教导的技术可以在VDSL和VDSL2系统中实现，并且用于同时在三个频带（例如，U0，U1和U2）中接收信号。

公开(公告)号：US20060104339A1

公开(公告)日：2006-05-18

申请号：US11282109

申请日：2005-11-18

申请人： Ehud Langberg ,  Lujing Cai

发明人： Ehud Langberg ,  Lujing Cai

IPC分类号： H04L5/16 ,  H04K1/10

CPC分类号： H04L5/1438 ,  H04B17/0085 ,  H04L25/03012 ,  H04L25/03019 ,  H04L27/2602 ,  H04L27/2607 ,  H04L27/2628 ,  H04L27/265 ,  H04L2025/03414 ,  H04L2025/03445 ,  H04L2025/03585

摘要： A method and system for enhancing reach-performance of a multi-carrier VDSL System estimates loop length, estimates maximum available bandwidth that can be utilized at that particular loop length, optimally selects an FFT size and sampling rate, and decides whether to apply a time domain equalization to its receiver and if so, selects a cyclic extension size. To minimize the implementation complexity, the sampling frequencies at receiver and transmitter are lowered to match the actual usable bandwidth. The FFT/IFFT sizes in the implementation are also required to set appropriately accordingly.

摘要翻译： 一种用于增强多载波VDSL系统的达到性能的方法和系统估计环路长度，估计可以在该特定环路长度下使用的最大可用带宽，最佳地选择FFT大小和采样率，并且决定是否应用时间 域均衡到其接收器，如果是，则选择循环扩展大小。 为了最小化实现复杂度，降低接收机和发射机的采样频率以匹配实际可用带宽。 执行中的FFT / IFFT大小也需要适当地进行设置。

公开(公告)号：US20050018837A1

公开(公告)日：2005-01-27

申请号：US10849569

申请日：2004-05-20

申请人： Patrick Duvaut ,  Ehud Langberg ,  Albert Rapaport ,  William Sholtz ,  Faina Shmulyian

发明人： Patrick Duvaut ,  Ehud Langberg ,  Albert Rapaport ,  William Sholtz ,  Faina Shmulyian

IPC分类号： H04L27/26 ,  H04M1/24 ,  H04M3/08 ,  H04M3/22

CPC分类号： H04L27/2602 ,  H04L27/2614

摘要： The present invention is directed to implementing theoretical foundations of frequency domain methods aiming to locally decrease the impact of aggregate side lobes of a few discrete frequency tones, in the vicinity of other “victim” frequencies. The family of frequency methods referred to makes use of one or more “canceller tones.” The “canceller tones” loads are optimized to minimize the aggregate power in the neighborhood of the victim frequencies. An exemplary method for decreasing an impact of aggregate side lobes of one or more discrete frequency tones in the vicinity of one or more victim tones comprises the steps of calculating an aggregate power of one or more side lobes of one or more disturber tones within a victim bandwidth; determining at least one optimal load to minimize the aggregate power wherein the at least one optimal load comprises a linear combination of the one or more disturber tones; and applying the at least one optimal load to one or more canceller tones for minimizing the impact of the one or more side lobes of the one or more disturber tones.

摘要翻译： 本发明旨在实现频域方法的理论基础，旨在局部地减小在其他“受害者”频率附近的几个离散频率的聚集旁瓣的影响。 所提及的频率方法族使用一个或多个“消除音”。 优化“消除音”负载以最小化受害者频率附近的总功率。 减少一个或多个受害音调附近的一个或多个离散频率音调的聚集旁瓣的影响的示例性方法包括以下步骤：计算受害者中一个或多个干扰音的一个或多个旁波的总功率 带宽; 确定至少一个最佳负载以最小化所述总功率，其中所述至少一个最佳负载包括所述一个或多个干扰调制音的线性组合; 以及将所述至少一个最佳负载应用于一个或多个消除器音调，以最小化一个或多个干扰音调的一个或多个旁瓣的影响。