公开(公告)号：US09660695B2

公开(公告)日：2017-05-23

申请号：US15195484

申请日：2016-06-28

申请人： IKANOS Communications, Inc.

发明人： Laurent Francis Alloin ,  William Edward Keasler, Jr. ,  Laurent Pierrugues ,  Arnold Muralt

IPC分类号： H04B3/32 ,  H04B3/46 ,  H04B3/487 ,  H04B3/466 ,  H04L12/28

CPC分类号： H04B3/32 ,  H04B3/46 ,  H04B3/466 ,  H04B3/487 ,  H04L12/2856

摘要： The present invention relates to methods and apparatuses for sensing noise sources in a wireline communications environment such as a customer premises environment in a DSL system. In embodiments, the invention includes an additional sensor that is connected to power mains in a DSL customer premises environment either to characterize, at their source, noises coupling into the DSL lines, and/or to mitigate their impact into the DSL lines. One objective is associated with diagnostics that help to better characterize the noise signals themselves and derive correlation of signals sensed from the power mains and their possible projection onto the DSL line. Another objective makes use of these power line sensor signals to mitigate or to eliminate power line noises that make their way onto the DSL line. Example embodiments further include and exploit signals from additional secondary sensors such as secondary common mode, differential mode and phantom mode sensors.

公开(公告)号：US20100046559A1

公开(公告)日：2010-02-25

申请号：US12583538

申请日：2009-08-21

申请人： Darren Hutchinson ,  Sigurd SCHELSTRAETE

发明人： Darren Hutchinson ,  Sigurd SCHELSTRAETE

IPC分类号： H04J4/00 ,  H04J1/00

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. In another embodiment of the invention the multi-tone modem includes a scheduler which optimizes bandwidth allocation on the wired communication medium.

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。 在本发明的另一个实施例中，多音调制解调器包括优化有线通信介质上的带宽分配的调度器。

公开(公告)号：US20100002755A1

公开(公告)日：2010-01-07

申请号：US12459129

申请日：2009-06-25

申请人： Sam Heidari ,  Sivannarayana Nagireddi ,  Sigurd Schelstraete ,  Avadhani Shridhar

发明人： Sam Heidari ,  Sivannarayana Nagireddi ,  Sigurd Schelstraete ,  Avadhani Shridhar

IPC分类号： H04B1/38

CPC分类号： H04B3/542 ,  H04B2203/5408 ,  H04B2203/5445 ,  H04B2203/5454 ,  H04L5/0037 ,  H04L5/0064 ,  H04L5/0092 ,  H04L5/1438

摘要： A multi-tone modem with shared and discrete components forming a transmit path and a receive path configured to couple to a wired communication medium to communicate at least one multi-tone modulated communication channel thereon. The modem includes a multi-tone modulator component and a configurable frequency up converter component. The multi-tone modulator component is configured for multi-tone modulation and demodulation of a transmitted and received communication channel at a base band frequency range. The configurable frequency up converter component is coupled to the multi-tone modulator to selectably up convert the frequency range of the transmitted base band signal from the multi-tone modulator to that of a selected communication band and down convert received signals from the selected communication band to the base band for demodulation by the multi-tone modulator.

摘要翻译： 具有形成发送路径的共享和分立组件的多音调制解调器和被配置为耦合到有线通信介质以在其上通信至少一个多音调调制通信信道的接收路径。 调制解调器包括多音调制器组件和可配置的升频转换器组件。 多音调制器部件被配置为在基带频率范围内对发送和接收的通信信道进行多音调制和解调。 可配置的上变频器组件耦合到多音调制器以可选择地将来自多音调制器的发射基带信号的频率范围转换成所选择的通信频带的频率范围，并且将来自所选择的通信频带的接收信号 到基带以进行多音调制器的解调。

公开(公告)号：US20090049347A1

公开(公告)日：2009-02-19

申请号：US12228972

申请日：2008-08-18

申请人： Avadhani Shridhar ,  Sam Heidari

发明人： Avadhani Shridhar ,  Sam Heidari

IPC分类号： G06F11/00

CPC分类号： H04L5/1446 ,  H04L1/0003 ,  H04L1/0059 ,  H04L1/203 ,  H04L1/206 ,  H04L5/1469 ,  H04L27/2647 ,  H04L27/2689

摘要： A transceiver with a plurality of components coupled to one another to form a transmit path and a receive path for multi-tone modulation of user data across a communication medium. The transceiver includes a framer and a deframer. The framer is configured to momentarily suspend framing of user data before processing bits associated with tones targeted for reference data transport and injects the pre-agreed reference pattern therein, after which framing of user data resumes. The deframer is configured to momentarily suspend deframing of received user data bits before processing bits associated with tones targeted for transport of pre-agreed reference data and extracts the received reference bits thereof for comparison with the corresponding pre-agreed reference bits to determine errors therein, after which deframing of user data resumes.

摘要翻译： 具有多个组件的收发器，彼此耦合以形成用于通过通信介质的用户数据的多音调制的发送路径和接收路径。 收发器包括一个成帧器和一个deframer。 成帧器被配置为在处理与针对参考数据传输的音调相关联的位之前暂时停止用户数据的成帧，并在其中注入预先约定的参考模式，之后恢复用户数据的构图。 解帧器被配置为在处理与预先约定的参考数据的传输的目标的音调相关联的位之前暂时停止所接收的用户数据位的解帧，并提取其接收到的参考比特以与对应的预先约定的参考比特进行比较以确定其中的错误， 之后恢复用户数据的清除。

公开(公告)号：US20080285740A1

公开(公告)日：2008-11-20

申请号：US12082541

申请日：2008-04-10

申请人： Sigurd Schelstraete ,  Sudhakar Kalluri

发明人： Sigurd Schelstraete ,  Sudhakar Kalluri

IPC分类号： H04M3/18

CPC分类号： H04L5/14 ,  H04B3/487 ,  H04L5/0007 ,  H04L5/1461

摘要： A line card including: a co-channel estimator and a code selector. The line card is configured to couple to digital subscriber lines to support multi-tone modulation of communications channels thereon. The co-channel estimator is configured to estimate co-channel crosstalk coupling coefficients among selected pairs of the subscriber lines at levels for which the total crosstalk into a selected victim line among the plurality of digital subscriber lines substantially corresponds to the sum of the products of the corresponding crosstalk coupling coefficient for each remaining disturber one of the plurality of subscriber lines and a corresponding substantially unique vector transmitted thereon. The code selector couples to the co-channel estimator. The code selector is configured to select a cross-talk estimation code type and to generate substantially unique code vectors derived there from for injection into selected ones of the of subscriber lines.

摘要翻译： 线卡，包括：同频道估计器和代码选择器。 线卡被配置为耦合到数字用户线路以支持其上的通信信道的多音调制。 共信道估计器被配置为在多个数字用户线路中对所选择的受害线路的总串扰基本上对应于多个用户线路的选择对的总和之间的估计中，估计选择的用户线路中的同频道串扰耦合系数 多个用户线路中的每个剩余干扰一个的相应串扰耦合系数和在其上传输的对应的基本唯一的向量。 代码选择器耦合到同信道估计器。 代码选择器被配置为选择串扰估计代码类型并且生成从其导出的基本上唯一的代码向量用于注入用户线中的选定的代码。

公开(公告)号：US07106789B1

公开(公告)日：2006-09-12

申请号：US09779790

申请日：2001-02-07

申请人： Behrooz Rezvani

发明人： Behrooz Rezvani

IPC分类号： H04B1/38

CPC分类号： H04L27/2656 ,  H04L12/2879 ,  H04L12/2889

摘要： An method and apparatus for provisioning multiple Next and fractional T1 along with packet based communications over a shared X-DSL communication link is disclosed. The communication link may be wired or wireless. The current invention provides a method and apparatus for flexibly provisioning businesses and other high bandwidth users, with multiple communication channels and multiple service types, both packet based and SDM/TDM. An efficient and configurable method and apparatus for multiplexing of both packets and STM channels on to a single VDSL frame is disclosed. At the receiver in the NT the VDSL receiver as explained is configured to de-multiplex individual channels and route them to individual users/suits within the building.

摘要翻译： 公开了一种用于通过共享的X-DSL通信链路提供多个Next和小数T1以及基于分组的通信的方法和装置。 通信链路可以是有线或无线的。 本发明提供了一种方法和装置，用于灵活地供应业务和其他高带宽用户，具有多个通信信道和多种服务类型，包括基于分组和SDM / TDM。 公开了一种用于将分组和STM信道复用到单个VDSL帧上的有效且可配置的方法和装置。 在NT的接收机中，如所解释的VDSL接收机被配置为对各个信道进行解复用，并将它们路由到建筑物内的各个用户/服务。

公开(公告)号：US06976202B1

公开(公告)日：2005-12-13

申请号：US10095618

申请日：2002-03-11

申请人： Behrooz Rezvani ,  George Ginis

发明人： Behrooz Rezvani ,  George Ginis

IPC分类号： H03M13/00 ,  H03M13/03 ,  H03M13/29 ,  H04L1/00 ,  H04L27/26

CPC分类号： H04L1/0057 ,  H03M13/2957 ,  H03M13/3776 ,  H04L1/0042 ,  H04L1/005 ,  H04L1/0066 ,  H04L1/04 ,  H04L5/0007

摘要： A method and apparatus for time and frequency domain forward error correction (FEC) in a modem which communicates data using multiple discrete sub-channels is provided. The invention may be implemented in hardware, software or firmware. In an embodiment of the invention a modem with a plurality of components forming a transmit path and a receive path is disclosed. The modem communicates data across a wired or wireless communication medium using a multiplicity of discrete sub-channels. The modem includes a transform component and a time domain FEC component. The transform component transforms the multiplicity of discrete sub-channels of a communication between a time domain and a frequency domain on the receive path and vice-versa on the transmit path. The time domain FEC component couples to the transform component. The time domain FEC component has a complementary encoder and decoder portion on the transmit and receive paths respectively. The encoder and decoder portions encode and decode respectively the multiplicity of discrete sub-channels in the time domain.

摘要翻译： 提供了一种用于使用多个离散子信道传送数据的调制解调器中的时域和频域前向纠错（FEC）的方法和装置。 本发明可以在硬件，软件或固件中实现。 在本发明的实施例中，公开了具有形成发送路径和接收路径的多个部件的调制解调器。 调制解调器使用多个离散子信道在有线或无线通信介质上传送数据。 调制解调器包括变换组件和时域FEC组件。 变换分量将发送路径上的接收路径上的时域和频域之间的通信的多个离散子信道进行变换，反之亦然。 时域FEC组件耦合到变换组件。 时域FEC分量在发送和接收路径上分别具有互补的编码器和解码器部分。 编码器和解码器部分分别对时域中的多个离散子信道进行编码和解码。

公开(公告)号：US20100046738A1

公开(公告)日：2010-02-25

申请号：US12583694

申请日：2009-08-24

申请人： Sigurd Schelstraete ,  Sam Heidari

发明人： Sigurd Schelstraete ,  Sam Heidari

IPC分类号： H04M9/08

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。

公开(公告)号：US07356049B1

公开(公告)日：2008-04-08

申请号：US10334623

申请日：2002-12-30

申请人： Behrooz Rezvani

发明人： Behrooz Rezvani

IPC分类号： H04J1/00 ,  H04L5/16

CPC分类号： H04L27/2608 ,  H04L1/0003

摘要： The present invention advantageously provides a method and apparatus for optimization of channel capacity in multi-line multi-tone communications such as X-DSL among subscriber lines which are bundled with one another. In an embodiment of the invention an apparatus for optimizing channel capacity of multi-tone communications effected by opposing sets of modems coupled to one another by a plurality of subscriber lines is disclosed. The apparatus includes a spectrum manager coupled to at least one of the opposing sets of modems. The spectrum manager includes: a profiler, a demand module and an optimizer. The profiler obtains from the at least one of the opposing sets of modems the spectral characteristics of each of the plurality of subscriber lines. The demand module determines for each of the plurality of subscriber lines the subscriber demand profile. The optimizer defines target parameters for at least one of bit loading, and power spectral density (PSD) for selected tones of the multi-tone communications based on the spectral characteristics from the profile module and the demand profiles from the demand module and downloads the target parameters to the at least one of the opposing sets of modems.

摘要翻译： 本发明有利地提供了一种用于在彼此捆绑的用户线路中的诸如X-DSL的多线多音通信中的信道容量优化的方法和装置。 在本发明的一个实施例中，公开了一种用于优化由多个用户线路彼此耦合的相对的调制解调器集所影响的多音调通信的信道容量的装置。 该装置包括耦合到相对的一组调制解调器中的至少一个的频谱管理器。 频谱管理器包括：分析器，需求模块和优化器。 分析器从至少一个相对的调制解调器获得多个用户线中的每一个的频谱特性。 需求模块为多个用户线路中的每一个确定用户需求简档。 优化器基于来自简档模块的频谱特性和来自需求模块的需求简档来定义用于多音通信的所选音调的位加载和功率谱密度（PSD）中的至少一个的目标参数，并且下载目标 参数到至少一个相对的调制解调器组中。

公开(公告)号：US07191387B1

公开(公告)日：2007-03-13

申请号：US10392674

申请日：2003-03-18

申请人： Firooz Massoudi

发明人： Firooz Massoudi

IPC分类号： H03M13/03

CPC分类号： H03M13/4169 ,  H03M13/4107 ,  H03M13/6561

摘要： A convolutional decoder for a wired or wireless receiver receiving an encoded datastream. The branch and path metric components compute branch and path metrics for the encoded datastream stream. The traceback unit couples to the path metric component to trace in each traceback interval a single path through the path metrics to determine correction factors for decoding at least two corresponding successive sub-symbols/symbols from the encoded datastream in each traceback interval.

摘要翻译： 用于有线或无线接收器的卷积解码器接收编码数据流。 分支和路径度量组件计算编码数据流流的分支和路径度量。 回溯单元耦合到路径度量组件，以在每个回溯间隔中跟踪通过路径度量的单个路径，以确定用于在每个回溯间隔中从编码数据流解码至少两个对应的连续子符号/符号的校正因子。