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1. 发明申请

US20120275591A1 Systems and Methods for G.Vector Initialization 有权
标题翻译： G.Vector初始化的系统和方法
公开(公告)号：US20120275591A1
公开(公告)日：2012-11-01
申请号：US13458865
申请日：2012-04-27
申请人： Amitkumar Mahadevan , Kevin D. Fisher , Nicholas P. Sands
发明人： Amitkumar Mahadevan , Kevin D. Fisher , Nicholas P. Sands
IPC分类号： H04M1/76
CPC分类号： H04M11/062 , H04B3/32
摘要： Methods, apparatuses (e.g., DSL system hardware, DSL systems, vectoring control entities), techniques, systems, etc. are used for initializing one or more DSL lines joining a vectored DSL line group operating in Showtime. A super-periodic orthogonal pilot sequence from a set of super-periodic orthogonal pilot sequences is assigned to each joining DSL line, wherein each such super-periodic orthogonal pilot sequence in the set has length L and is orthogonal to other sequences in the set over length T. These super-periodic orthogonal pilot sequences are used on the joining DSL lines to generate at least T sync-symbols worth of initialization data, which is processed to generate initialization data and FEXT mitigation coefficients for use when the joining DSL lines become part of the vectored DSL line group.
摘要翻译：方法，装置（例如，DSL系统硬件，DSL系统，向量控制实体），技术，系统等用于初始化连接在Showtime中操作的向量DSL线路组的一个或多个DSL线路。从一组超周期正交导频序列的超周期正交导频序列被分配给每个加入DSL线，其中集合中的每个这样的超周期正交导频序列具有长度L，并且与组中的其他序列正交这些超周期正交导频序列用于加入DSL线路以产生至少T个同步符号的初始化数据，其被处理以产生初始化数据和当加入DSL线路成为部分时使用的FEXT缓解系数的矢量DSL线组。

2. 发明授权

US09270831B2 Systems and methods for G.vector initialization 有权
标题翻译： G.vector初始化的系统和方法
公开(公告)号：US09270831B2
公开(公告)日：2016-02-23
申请号：US13458865
申请日：2012-04-27
申请人： Amitkumar Mahadevan , Kevin D. Fisher , Nicholas P. Sands
发明人： Amitkumar Mahadevan , Kevin D. Fisher , Nicholas P. Sands
IPC分类号： H04M11/06 , H04B3/32
CPC分类号： H04M11/062 , H04B3/32
摘要： Methods, apparatuses (e.g., DSL system hardware, DSL systems, vectoring control entities), techniques, systems, etc. are used for initializing one or more DSL lines joining a vectored DSL line group operating in Showtime. A super-periodic orthogonal pilot sequence from a set of super-periodic orthogonal pilot sequences is assigned to each joining DSL line, wherein each such super-periodic orthogonal pilot sequence in the set has length L and is orthogonal to other sequences in the set over length T. These super-periodic orthogonal pilot sequences are used on the joining DSL lines to generate at least T sync-symbols worth of initialization data, which is processed to generate initialization data and FEXT mitigation coefficients for use when the joining DSL lines become part of the vectored DSL line group.
摘要翻译：方法，装置（例如，DSL系统硬件，DSL系统，向量控制实体），技术，系统等用于初始化连接在Showtime中操作的向量DSL线路组的一个或多个DSL线路。从一组超周期正交导频序列的超周期正交导频序列被分配给每个加入DSL线，其中集合中的每个这样的超周期正交导频序列具有长度L，并且与组中的其他序列正交这些超周期正交导频序列用于加入DSL线路以产生至少T个同步符号的初始化数据，其被处理以产生初始化数据和当加入DSL线路成为部分时使用的FEXT缓解系数的矢量DSL线组。

3. 发明授权

US08780686B2 Reduced memory vectored DSL 有权
标题翻译：减少存储器矢量DSL
公开(公告)号：US08780686B2
公开(公告)日：2014-07-15
申请号：US13189095
申请日：2011-07-22
申请人： Nicholas P. Sands , Stephanie F. Pereira , Darren B. Hutchinson , Kevin D. Fisher , Amitkumar Mahadevan
发明人： Nicholas P. Sands , Stephanie F. Pereira , Darren B. Hutchinson , Kevin D. Fisher , Amitkumar Mahadevan
IPC分类号： H04J1/12 , H04B3/20
CPC分类号： H04B3/32
摘要： The memory storage, transmission and processing demands of a vectored DSL system are reduced by sampling a subset of DSL tones in the DSL tone range used in the vectored system. This data is smoothed (denoised) to further reduce the data's size, sacrificing some fidelity or precision as a result. Finally, lossless entropy coding or the like is performed to encode the FEXT cancellation data for storage and use. The resulting data is less likely to cause transmission bottlenecks in the vectored system, can be stored and used more efficiently for both on-chip and off-chip vectoring implementations, and can be readily updated in various ways.
摘要翻译：矢量DSL系统的存储器存储，传输和处理需求通过在矢量系统中使用的DSL音调范围中采样DSL音调的子集来减少。该数据被平滑（去噪），以进一步减少数据的大小，从而牺牲一些保真度或精度。最后，执行无损熵编码等以对用于存储和使用的FEXT取消数据进行编码。所得到的数据不太可能导致向量系统中的传输瓶颈，可以在片上和片外向量实现方面更有效地存储和使用，并且可以以各种方式容易地更新。

4. 发明授权

US08854941B2 Vectored DSL crosstalk cancellation 有权
标题翻译：导频DSL串扰消除
公开(公告)号：US08854941B2
公开(公告)日：2014-10-07
申请号：US12997222
申请日：2009-06-09
申请人： Kevin D. Fisher , Nicholas P. Sands
发明人： Kevin D. Fisher , Nicholas P. Sands
IPC分类号： H04J1/12 , H04M11/06 , H04B3/32 , H04M3/30 , H04M3/34 , H04M3/22
CPC分类号： H04B3/32 , H04M3/2209 , H04M3/304 , H04M3/34 , H04M11/062
摘要： A vector DSL system includes a plurality of modems, which may be multi-port devices. Unprocessed user data is extracted from the modems and passed through a private vectoring data routing apparatus to one or more vectoring modules, such as vectoring cards. Each vectoring module includes one or more vector processors that include processing units configured to process the unprocessed user data on the basis of all modems' data for a given DSL tone grouping. Processing of the unprocessed user data removes the effects of FEXT from upstream and downstream user data and returns the processed user data to the modems using the vectoring data routing apparatus, which can be a specialized data transmission network utilizing one or more vector routers.
摘要翻译：矢量DSL系统包括多个调制解调器，其可以是多端口设备。从调制解调器提取未处理的用户数据，并通过专用向量化数据路由装置传送到一个或多个向量模块，例如向量卡。每个矢量模块包括一个或多个矢量处理器，其包括被配置为基于给定DSL音调分组的所有调制解调器的数据来处理未处理的用户数据的处理单元。未处理的用户数据的处理从上游和下游用户数据中消除FEXT的影响，并使用向量化数据路由装置将处理过的用户数据返回到调制解调器，矢量化数据路由装置可以是利用一个或多个向量路由器的专用数据传输网络。

5. 发明申请

US20110080938A1 VECTORED DSL CROSSTALK CANCELLATION 有权
公开(公告)号：US20110080938A1
公开(公告)日：2011-04-07
申请号：US12997222
申请日：2009-06-09
申请人： Kevin D. Fisher , Nicholas P. Sands
发明人： Kevin D. Fisher , Nicholas P. Sands
IPC分类号： H04B1/38
CPC分类号： H04B3/32 , H04M3/2209 , H04M3/304 , H04M3/34 , H04M11/062
摘要： A vector DSL system includes a plurality of modems, which may be multi-port devices. Unprocessed user data is extracted from the modems and passed through a private vectoring data routing apparatus to one or more vectoring modules, such as vectoring cards. Each vectoring module includes one or more vector processors that include processing units configured to process the unprocessed user data on the basis of all modems' data for a given DSL tone grouping. Processing of the unprocessed user data removes the effects of FEXT from upstream and downstream user data and returns the processed user data to the modems using the vectoring data routing apparatus, which can be a specialized data transmission network utilizing one or more vector routers.
摘要翻译：矢量DSL系统包括多个调制解调器，其可以是多端口设备。从调制解调器提取未处理的用户数据，并通过专用向量化数据路由装置传送到一个或多个向量模块，例如向量卡。每个矢量模块包括一个或多个矢量处理器，其包括被配置为基于给定DSL音调分组的所有调制解调器的数据来处理未处理的用户数据的处理单元。未处理的用户数据的处理从上游和下游用户数据中消除FEXT的影响，并使用向量化数据路由装置将处理过的用户数据返回到调制解调器，矢量化数据路由装置可以是利用一个或多个向量路由器的专用数据传输网络。

6. 发明授权

US08619843B2 Alien interference removal in vectored DSL 有权
标题翻译：矢量DSL中的外来干扰消除
公开(公告)号：US08619843B2
公开(公告)日：2013-12-31
申请号：US13058477
申请日：2009-08-08
申请人： Nicholas P. Sands , Kevin D. Fisher
发明人： Nicholas P. Sands , Kevin D. Fisher
IPC分类号： H04B1/38 , H04L5/16
CPC分类号： H04B3/32 , H04B3/487 , H04M11/062 , Y02D50/44
摘要： A vectored DSL system reduces or eliminates correlated alien interference in active DSL lines in the vectored system by collecting pseudo signals from inactive lines that do not carry upstream DSL transmissions and/or from common-mode voltage signals from active lines. The collected pseudo signals contain in-domain interference, such as FEXT interference from the active DSL lines in the vectored system, and correlated alien interference. After removing the in-domain interference from the pseudo signals, the remaining alien interference data can be used to generate FEXT cancellation coefficients or the like that are used in DSL vectoring to remove the correlated alien interference from upstream DSL user signals from the active DSL lines. The generated FEXT cancellation coefficients are used in a manner analogous to in-domain FEXT data collected from the active lines during training, tracking, etc. The vectored DSL system can include modems coupled to a private vectoring data routing apparatus to one or more vectoring modules The vectoring modules can employ vector processors that include processing units configured to process collected user data on the basis of all modems' data for a given DSL tone grouping, thus removing FEXT effects from the user data and returning vectored user data to the modems using the routing apparatus, which can be a specialized data transmission network utilizing one or more vector routers.
摘要翻译：矢量DSL系统通过从不带有上行DSL传输和/或来自有源线路的共模电压信号的非活动线路收集伪信号来减少或消除向量系统中活动DSL线路中的相关外来干扰。所收集的伪信号包含域内干扰，例如来自向量系统中的活动DSL线路的FEXT干扰以及相关的外部干扰。在从伪信号中去除域内干扰之后，剩余的外来干扰数据可用于产生用于DSL矢量化中的FEXT消除系数等，以消除来自有源DSL线路的上游DSL用户信号的相关外来干扰。生成的FEXT消除系数以类似于在训练，跟踪等期间从活动线收集的域内FEXT数据的方式使用。矢量DSL系统可以包括耦合到专用向量化数据路由装置的调制解调器到一个或多个矢量模块矢量化模块可以使用矢量处理器，其包括被配置为基于用于给定DSL音调分组的所有调制解调器的数据来处理所收集的用户数据的处理单元，从而从用户数据中消除FEXT效应，并使用路由设备，其可以是利用一个或多个向量路由器的专用数据传输网络。

7. 发明授权

US08687497B2 Reduced memory vectored DSL 有权
标题翻译：减少存储器矢量DSL
公开(公告)号：US08687497B2
公开(公告)日：2014-04-01
申请号：US13002213
申请日：2009-06-30
申请人： Nicholas P. Sands , Kevin D. Fisher
发明人： Nicholas P. Sands , Kevin D. Fisher
IPC分类号： G01R31/08
CPC分类号： H04B3/487 , H04B3/32
摘要： A reduced-memory vectored DSL system includes methods and apparatus for reducing the bandwidth and memory storage demands on a vectored DSL system in which FEXT data is transmitted and stored. An upstream-end device such as a DSLAM communicates with a plurality of downstream-end devices such as CPE modems. When test signal data, such as training and/or tracking data, is sent to determine FEXT characteristics of the DSL system, error signals are available for all or substantially all of the upstream and/or downstream frequency band DSL tones used in the system. Dividing a frequency band into sub-bands, only a subset of tones in each sub-band is used for deriving FEXT data, such as a FEXT channel response, FEXT channel coefficients and/or FEXT cancellation coefficients. For tones in the sub-band subsets, full-precision FEXT data values can be derived. For other tones, approximations of the FEXT data can be derived.
摘要翻译：减少存储器向量的DSL系统包括用于减少其中发送和存储FEXT数据的向量DSL系统的带宽和存储器存储需求的方法和装置。诸如DSLAM的上游设备与多个下游端设备（例如CPE调制解调器）通信。当测试信号数据（例如训练和/或跟踪数据）被发送以确定DSL系统的FEXT特性时，错误信号可用于系统中使用的所有或基本上所有上游和/或下游频带DSL音调。将频带划分为子带，每个子带中仅有一个音调子集用于导出FEXT数据，例如FEXT信道响应，FEXT信道系数和/或FEXT抵消系数。对于子带子集中的音调，可以导出全精度FEXT数据值。对于其他色调，可以导出FEXT数据的近似值。

8. 发明申请

US20110142111A1 ALIEN INTERFERENCE REMOVAL IN VECTORED DSL 有权
标题翻译：已经在DSL中的ALIEN干扰去除
公开(公告)号：US20110142111A1
公开(公告)日：2011-06-16
申请号：US13058477
申请日：2009-08-08
申请人： Nicholas P. Sands , Kevin D. Fisher
发明人： Nicholas P. Sands , Kevin D. Fisher
IPC分类号： H04B1/38
CPC分类号： H04B3/32 , H04B3/487 , H04M11/062 , Y02D50/44
摘要： A vectored DSL system reduces or eliminates correlated alien interference in active DSL lines in the vectored system by collecting pseudo signals from inactive lines that do not carry upstream DSL transmissions and/or from common-mode voltage signals from active lines. The collected pseudo signals contain in-domain interference, such as FEXT interference from the active DSL lines in the vectored system, and correlated alien interference. After removing the in-domain interference from the pseudo signals, the remaining alien interference data can be used to generate FEXT cancellation coefficients or the like that are used in DSL vectoring to remove the correlated alien interference from upstream DSL user signals from the active DSL lines. The generated FEXT cancellation coefficients are used in a manner analogous to in-domain FEXT data collected from the active lines during training, tracking, etc. The vectored DSL system can include modems coupled to a private vectoring data routing apparatus to one or more vectoring modules The vectoring modules can employ vector processors that include processing units configured to process collected user data on the basis of all modems' data for a given DSL tone grouping, thus removing FEXT effects from the user data and returning vectored user data to the modems using the routing apparatus, which can be a specialized data transmission network utilizing one or more vector routers.
摘要翻译：矢量DSL系统通过从不带有上行DSL传输和/或来自有源线路的共模电压信号的非活动线路收集伪信号来减少或消除向量系统中活动DSL线路中的相关外来干扰。所收集的伪信号包含域内干扰，例如来自向量系统中的活动DSL线路的FEXT干扰以及相关的外部干扰。在从伪信号中去除域内干扰之后，剩余的外来干扰数据可用于产生用于DSL矢量化中的FEXT消除系数等，以消除来自有源DSL线路的上游DSL用户信号的相关外来干扰。生成的FEXT消除系数以类似于在训练，跟踪等期间从有效行收集的域内FEXT数据的方式使用。矢量DSL系统可以包括耦合到专用向量化数据路由装置的调制解调器到一个或多个矢量模块矢量化模块可以使用矢量处理器，其包括被配置为基于用于给定DSL音调分组的所有调制解调器的数据来处理所收集的用户数据的处理单元，从而从用户数据中消除FEXT效应，并使用路由设备，其可以是利用一个或多个向量路由器的专用数据传输网络。

9. 发明申请

US20110110409A1 REDUCED MEMORY VECTORED DSL 有权
标题翻译：减少存储量的DSL
公开(公告)号：US20110110409A1
公开(公告)日：2011-05-12
申请号：US13002213
申请日：2009-06-30
申请人： Nicholas P. Sands , Kevin D. Fisher
发明人： Nicholas P. Sands , Kevin D. Fisher
IPC分类号： H04L29/02 , H04B1/38
CPC分类号： H04B3/487 , H04B3/32
摘要： A reduced-memory vectored DSL system includes methods and apparatus for reducing the bandwidth and memory storage demands on a vectored DSL system in which FEXT data is transmitted and stored. An upstream-end device such as a DSLAM communicates with a plurality of downstream-end devices such as CPE modems. When test signal data, such as training and/or tracking data, is sent to determine FEXT characteristics of the DSL system, error signals are available for all or substantially all of the upstream and/or downstream frequency band DSL tones used in the system. Dividing a frequency band into sub-bands, only a subset of tones in each sub-band is used for deriving FEXT data, such as a FEXT channel response, FEXT channel coefficients and/or FEXT cancellation coefficients. For tones in the sub-band subsets, full-precision FEXT data values can be derived. For other tones, approximations of the FEXT data can be derived. Alternatively, FEXT data can be defined as a base point and associated differential/incremental values that define full-precision and/or approximation FEXT data with fewer bits by utilizing a Δ value relative to either a sub-band base point or relative to another tone's value. Memory is reduced in both the transmission of such FEXT data (between upstream and downstream ends of the DSL system) as well as within an upstream-end device such as a DSLAM that performs vectoring using a separate or internal vectoring processing apparatus. Memory also is reduced in the storage of such FEXT data in or off of the DSLAM or other upstream-end device.
摘要翻译：减少存储器向量的DSL系统包括用于减少其中发送和存储FEXT数据的向量DSL系统的带宽和存储器存储需求的方法和装置。诸如DSLAM的上游设备与多个下游端设备（例如CPE调制解调器）通信。当测试信号数据（例如训练和/或跟踪数据）被发送以确定DSL系统的FEXT特性时，错误信号可用于系统中使用的所有或基本上所有上游和/或下游频带DSL音调。将频带划分成子带，每个子带中只有一个音调子集用于导出FEXT数据，例如FEXT信道响应，FEXT信道系数和/或FEXT抵消系数。对于子带子集中的音调，可以导出全精度FEXT数据值。对于其他色调，可以导出FEXT数据的近似值。或者，FEXT数据可以被定义为通过利用＆Dgr来定义具有较少位的全精度和/或近似FEXT数据的基点和相关联的差分/增量值。相对于子带基点或相对于另一个音调的值。在这种FEXT数据（在DSL系统的上游和下游端之间）的传输以及诸如使用单独的或内部的向量化处理设备执行向量化的DSLAM的上游设备中，存储器都被减少。将这样的FEXT数据存储在DSLAM或其他上游设备中或之外的存储器也减少了。

10. 发明授权

US6134283A Method and system for synchronizing time-division-duplexed transceivers 失效
标题翻译：用于同步时分双工收发器的方法和系统
公开(公告)号：US6134283A
公开(公告)日：2000-10-17
申请号：US972842
申请日：1997-11-18
申请人： Nicholas P. Sands , John A. C. Bingham
发明人： Nicholas P. Sands , John A. C. Bingham
IPC分类号： H04J3/06 , H04J11/00 , H04L5/02 , H04L5/14 , H04L7/08 , H04L7/00
CPC分类号： H04L5/1492 , H04L5/023
摘要： An improved techniques for synchronizing transmissions and receptions of a data transmission system utilizing time division duplexing is disclosed. The improved synchronization techniques utilize the time-varying nature of the energy of the received data to obtain synchronization. In one embodiment, the improved synchronization technique uses the output signals from a multicarrier modulation unit (FFT unit) and thus provides the ability to avoid frequency tones that are susceptible to RF interference. The improved synchronization techniques can also utilize crosstalk interference levels to obtain synchronization. Remote receivers in the data transmission system are able to synchronize to central transmitters, central receivers in the data transmission system are able to synchronize to remote transmitters, and central transmitters are able to synchronize with one another.
摘要翻译：公开了一种利用时分双工技术同步数据传输系统的传输和接收的改进技术。改进的同步技术利用接收到的数据的能量的时变特性来获得同步。在一个实施例中，改进的同步技术使用来自多载波调制单元（FFT单元）的输出信号，从而提供避免易受RF干扰的频率音调的能力。改进的同步技术还可以利用串扰干扰电平来获得同步。数据传输系统中的远程接收器能够与中央发射机同步，数据传输系统中的中央接收机能够与远程发射机同步，中央发射机能够相互同步。

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