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公开(公告)号：US08817857B2
公开(公告)日：2014-08-26
申请号：US13189666
申请日：2011-07-25
摘要： Residual FEXT resulting from intended and/or inherent partial cancellation of crosstalk in vectored DSL systems impairs upstream power back-off (UPBO) as traditionally implemented. By considering and taking into account the effects of residual crosstalk on vectored DSL system performance and operation, improved data rates and/or other vectored DSL system performance are realized through the use of UPBO parameters generated for a given residual FEXT environment.
摘要翻译： 由于矢量DSL系统中串扰的预期和/或固有部分消除而导致的剩余FEXT损害了传统实现的上游功率回退（UPBO）。 通过考虑并考虑残留串扰对矢量DSL系统性能和操作的影响，通过使用为给定的剩余FEXT环境生成的UPBO参数来实现改进的数据速率和/或其他矢量DSL系统性能。
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公开(公告)号：US20110274147A1
公开(公告)日：2011-11-10
申请号：US13103063
申请日：2011-05-07
IPC分类号： H04B1/38
CPC分类号： H04L1/1887
摘要： Disclosed are various embodiments for performing retransmission with on-line reconfiguration. A data stream is encoded into first frames according to a framing configuration. A request is obtained for an on-line reconfiguration of the framing configuration from a receiver. The encoding of the data stream into the first frames is suspended in response to the request. One or more first frames are retransmitted to the receiver during a retransmission time period that commences relative to the suspending of the encoding of the data stream into the first frames. The encoding of the data stream into second frames is resumed according to a modified framing configuration consistent with the on-line reconfiguration. The second frames are transmitted to the receiver upon expiration of the retransmission time period.
摘要翻译： 公开了通过在线重新配置执行重发的各种实施例。 数据流根据帧配置被编码成第一帧。 从接收机获取帧配置的在线重新配置的请求。 响应于该请求暂停将数据流编码到第一帧中。 在从数据流的编码暂停到第一帧的重传时间周期期间，将一个或多个第一帧重新发送到接收机。 根据与在线重新配置一致的修改的帧配置，恢复到第二帧的数据流的编码。 第二帧在重传时间段到期时被发送到接收机。
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公开(公告)号：US09054931B2
公开(公告)日：2015-06-09
申请号：US13483016
申请日：2012-05-29
IPC分类号： H04L12/413 , H04L27/26 , H04L1/18 , H04L5/00
CPC分类号： H04L27/2626 , H04B3/54 , H04L1/1854 , H04L5/0005 , H04L5/0037 , H04L5/0091 , H04L27/2647
摘要： A multi-tone modem with components forming a transmit path and a receive path configured to couple to a wired communication medium for at least intermittent communication of frequency division multiplexed multi-tone modulated communication channels thereon. A Fourier transform component transforms received communication channels between a time domain and a frequency domain and vice-versa. Selected components on the receive path determine alignments between the received multiplexed communication channels in the time domain using alignment determinations made in both a time domain and frequency domain portions of the receive path. The Fourier transform component transforms a stream of digitized samples of the received multiplexed communication channels from the time to the frequency domain using the alignment determinations made by the selected components on the receive path.
摘要翻译： 具有形成发送路径的组件的多音调制解调器和被配置为耦合到有线通信介质的接收路径，用于至少间歇地通信其频分复用多音调调制通信信道。 傅里叶变换分量在时域和频域之间变换接收到的通信信道，反之亦然。 接收路径上的所选择的组件使用在接收路径的时域和频域部分中进行的对准确定来确定时域中所接收的复用通信信道之间的对准。 傅立叶变换分量使用由接收路径上的所选择的分量进行的对准确定，将接收到的复用的通信信道的数字化样本流从时间变换到频域。
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4.发明授权Systems and methods for transporting time-of-day information in a communication system 有权在通信系统中传送时间信息的系统和方法公开(公告)号：US08775849B2
公开(公告)日：2014-07-08
申请号：US13103072
申请日：2011-05-08
CPC分类号： H04J3/0685 , H04J3/0638 , H04J3/0667 , H04L27/2656 , H04L27/2673 , H04M11/062
摘要： Systems and methods for synchronizing a clock at a customer premises equipment (CPE) location with a master clock at a central office (CO) location are described. One embodiment is a method that comprises receiving, by a time-of-day transmission convergence (ToD-TC) module in the CPE, ToD information relating to the master clock. Based on the received information, time stamps are applied to reference data samples. The method further comprises transporting the ToD information by transporting the reference data samples with applied time stamps and utilizing time stamps of the reference data samples to synchronize the CPE clock with the master clock.
摘要翻译： 描述了用于在客户驻地设备（CPE）位置与中心局（CO）位置处的主时钟同步时钟的系统和方法。 一个实施例是一种方法，其包括通过CPE中的日期传输收敛（ToD-TC）模块接收与主时钟相关的ToD信息。 基于接收到的信息，将时间戳应用于参考数据样本。 该方法还包括通过传送具有应用时间戳的参考数据样本并利用参考数据样本的时间戳来传送ToD信息，以使CPE时钟与主时钟同步。
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公开(公告)号：US08588052B1
公开(公告)日：2013-11-19
申请号：US12587448
申请日：2009-10-06
申请人： Sigurd Schelstraete
发明人： Sigurd Schelstraete
IPC分类号： H04J11/00
CPC分类号： H04L27/2662 , H04B3/544 , H04L27/2613 , H04L27/2656
摘要： A multi-tone modem has a plurality of shared and discrete components forming a transmit path and a receive path configured to couple to a wired communication medium for packet based communication thereon. The transmit path includes components for forming a communication packet including a hybrid preamble portion and a data portion. The hybrid preamble portion integrates both synch and timing info for packet alignment together with header information for determining at least packet destination, thereby shortening packet length by avoiding a requirement of a distinct header portion. The receive path includes components operative in a time domain to detect, in a stream of digitized samples, a symbol alignment of a received communication packet based on synch and timing info in the hybrid preamble portion thereof and operative in a frequency domain to extract header information from the hybrid preamble.
摘要翻译： 多音调制解调器具有形成传输路径的多个共享和离散组件以及被配置为耦合到有线通信介质以用于其上的基于分组的通信的接收路径。 发送路径包括用于形成包括混合前导码部分和数据部分的通信分组的组件。 混合前置码部分将用于分组对准的同步和定时信息与用于确定至少分组目的地的报头信息相集成，从而通过避免对不同报头部分的要求来缩短分组长度。 接收路径包括在时域中操作的组件，以在数字化采样流中基于在其混合前导码部分中的同步和定时信息来检测接收到的通信分组的符号对齐，并在频域中操作以提取报头信息 从混合序列。
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公开(公告)号：US08345859B2
公开(公告)日：2013-01-01
申请号：US12009196
申请日：2008-01-16
申请人： Sam Heidari , Sigurd Schelstraete , Aner Tennen , Elango Pakriswamy , Chun-Sup Kim , Luiz Felipe Fuks
发明人： Sam Heidari , Sigurd Schelstraete , Aner Tennen , Elango Pakriswamy , Chun-Sup Kim , Luiz Felipe Fuks
CPC分类号： H04M11/062
摘要： A XDSL line card including an allocator for allocating power to the multi-tone modulated communications on each of the subscriber lines, and for selecting control parameters sufficient to effect communications on each of the subscriber lines at a power level proximate to an allocated power level therefore. The line card also includes configurable components coupled to one another to form a transmit path and a receive path to couple to the digital subscriber lines. The configurable components are responsive to the control parameters selected by the allocator to initialize multi-tone communications over each of the plurality of subscriber lines at a power level proximate the allocated power level.
摘要翻译： 一种XDSL线路卡，包括用于为每个用户线路上的多音调调制通信分配功率的分配器，并且用于选择足以在接近分配的功率电平的功率电平上在每个用户线上进行通信的控制参数 。 线卡还包括彼此耦合的可配置组件以形成发送路径和接收到数字用户线路的接收路径。 可配置组件响应于由分配器选择的控制参数，以在接近分配的功率电平的功率电平上初始化多个用户线中的每一个上的多音通信。
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公开(公告)号：US07409626B1
公开(公告)日：2008-08-05
申请号：US11193832
申请日：2005-07-28
申请人： Sigurd Schelstraete
发明人： Sigurd Schelstraete
IPC分类号： H03M13/00
CPC分类号： H03M13/2732
摘要： Modem selection of codeword interleaver parameters given standard based, operator based and channel based communication channel performance constraints. A processor implements processes for characterizing the forward error correction codeword and interleaver solution space in terms of expressions from which targeted portions of the solution space may be identified prior to evaluation of the magnitude of the coefficients of the corresponding nodes thereof for compliance with the communication channel performance constraints.
摘要翻译： 调制解调器选择码字交织器参数给出基于标准的，基于运营商和基于通道的通信通道性能约束。 处理器实现用于表征前向纠错码字和交织器解空间的过程，根据表达式，在评估其相应节点的系数的大小以便符合通信信道之前，可以识别解空间的目标部分 性能限制。
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公开(公告)号：US08989239B2
公开(公告)日：2015-03-24
申请号：US13103063
申请日：2011-05-07
CPC分类号： H04L1/1887
摘要： Disclosed are various embodiments for performing retransmission with on-line reconfiguration. A data stream is encoded into first frames according to a framing configuration. A request is obtained for an on-line reconfiguration of the framing configuration from a receiver. The encoding of the data stream into the first frames is suspended in response to the request. One or more first frames are retransmitted to the receiver during a retransmission time period that commences relative to the suspending of the encoding of the data stream into the first frames. The encoding of the data stream into second frames is resumed according to a modified framing configuration consistent with the on-line reconfiguration. The second frames are transmitted to the receiver upon expiration of the retransmission time period.
摘要翻译： 公开了通过在线重新配置执行重发的各种实施例。 数据流根据帧配置被编码成第一帧。 从接收机获取帧配置的在线重新配置的请求。 响应于该请求暂停将数据流编码到第一帧中。 在从数据流的编码暂停到第一帧的重传时间周期期间，将一个或多个第一帧重新发送到接收机。 根据与在线重新配置一致的修改的帧配置，恢复到第二帧的数据流的编码。 第二帧在重传时间段到期时被发送到接收机。
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公开(公告)号：US08427933B2
公开(公告)日：2013-04-23
申请号：US12583694
申请日：2009-08-24
申请人： Sigurd Schelstraete , Sam Heidari
发明人： Sigurd Schelstraete , Sam Heidari
CPC分类号： H04B3/32 , H04L25/03343 , H04L2025/03426 , H04M11/062
摘要： An apparatus for precoding multi-tone modulated transmissions of a plurality of communication channels over bundled subscriber lines. The apparatus includes a pseudo symbol controller and a precoder. The pseudo symbol controller detects a victim communication channel and an interferer communication channel having non-matching symbol rates, and transforms the interferor channel into a pseudo-symbol having both a substantially similar length as a corresponding symbol of the victim channel together with defined tonal characteristics expressed in terms of the interferor channel. The precoder assigns crosstalk coefficients to selected sub-channels or tones of the pseudo symbol and precodes the victim channel with the pseudo symbol using the crosstalk coefficients; thereby generating a precoded victim symbol which exhibits reduced crosstalk between the selected victim and interferor.
摘要翻译： 一种用于通过捆绑用户线路预编码多个通信信道的多音调调制传输的装置。 该装置包括伪符号控制器和预编码器。 伪符号控制器检测受害者通信信道和具有不匹配符号率的干扰信道，并将干扰信道转换成具有与受害信道的对应符号基本相似的长度的伪符号以及定义的音调特征 以干扰信道表示。 预编码器将串扰系数分配给伪符号的选择子信道或音调，并使用串扰系数对伪信号进行预编码; 从而产生在所选择的受害者和干扰者之间表现出减少的串扰的预编码的受害者符号。
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公开(公告)号：US08325825B2
公开(公告)日：2012-12-04
申请号：US12799607
申请日：2010-04-27
IPC分类号： H04B3/00
CPC分类号： H04L25/085 , H04B3/32 , H04M11/062
摘要： A digital subscriber line ‘XDSL’ communication system for optimizing dynamic range in digital multi-tone modulated (DMT) modems. The system comprises a digital subscriber line access multiplexer (DSLAM) and at least one modem. The DSLAM distributes a near end crosstalk (NEXT) model of anticipated disturbance from neighboring disturber subscriber lines. The at least one modem has shared and discrete components forming a transmit path and a receive path. The at least one modem couples to the DSLAM and is responsive to the distributed NEXT model there from to adjust a dynamic range of an analog portion of the receive path to accommodate the anticipated disturbance modeled in the distributed NEXT model.
摘要翻译： 一种用于优化数字多音调制（DMT）调制解调器动态范围的数字用户线XDSL通信系统。 该系统包括数字用户线接入复用器（DSLAM）和至少一个调制解调器。 DSLAM分配来自相邻干扰用户线路的预期扰动的近端串扰（NEXT）模型。 所述至少一个调制解调器具有形成发送路径和接收路径的共享和离散组件。 所述至少一个调制解调器耦合到DSLAM并且响应于其上的分布式NEXT模型来调整接收路径的模拟部分的动态范围以适应在分布式NEXT模型中建模的预期干扰。
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