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1. 发明授权

US07457368B2 Multilevel channel coding in ADSL 有权
标题翻译： ADSL中的多级信道编码
公开(公告)号：US07457368B2
公开(公告)日：2008-11-25
申请号：US10860286
申请日：2004-06-04
申请人： Patrick Duvaut , Ehud Langberg , Julien Pons , William Scholtz
发明人： Patrick Duvaut , Ehud Langberg , Julien Pons , William Scholtz
IPC分类号： H04L5/12
CPC分类号： H04L1/006 , H03M13/255 , H03M13/256 , H03M13/635 , H04L1/0041 , H04L1/0066 , H04L1/007
摘要： Disclosed herein are various techniques for multilevel channel coding. For a given binary word comprising a plurality of bits, the least-significant bit may be encoded by a boosted coding technique, such as turbo channel coding or low density parity check (LDPC) channel coding. A subset of the remaining bits of the binary word may be encoded using trellis coded modulation (TCM) coding. The results of the boosted channel coding and the TCM coding may be mapped to one or more symbols. The one or more symbols then may be transmitted to a receiver using transmission techniques well known to those skilled in the art. The present invention finds particular benefit in digital subscriber line (DSL)-based systems in accord with the ITU G.922.1 Recommendation and similar standards.
摘要翻译：这里公开了用于多电平信道编码的各种技术。对于包括多个位的给定二进制字，最低有效位可以通过诸如turbo信道编码或低密度奇偶校验（LDPC）信道编码的增强编码技术来编码。可以使用网格编码调制（TCM）编码对二进制字的剩余位的子集进行编码。增强的信道编码和TCM编码的结果可以映射到一个或多个符号。然后可以使用本领域技术人员公知的传输技术将一个或多个符号发送到接收机。本发明在符合ITU G.922.1建议书和类似标准的基于数字用户线路（DSL）的系统中具有特别的益处。

2. 发明授权

US07400710B2 MIMO dynamic PSD allocation for DSL networks 有权
标题翻译：用于DSL网络的MIMO动态PSD分配
公开(公告)号：US07400710B2
公开(公告)日：2008-07-15
申请号：US10808549
申请日：2004-03-25
申请人： Ehud Langberg , William Scholtz , Lujing Cai , Albert Rapaport , Shareq Rahman , Patrick Duvaut
发明人： Ehud Langberg , William Scholtz , Lujing Cai , Albert Rapaport , Shareq Rahman , Patrick Duvaut
IPC分类号： H04M1/24 , H04M3/08 , H04M3/22
CPC分类号： H04L5/023 , H04L1/0026 , H04L27/2608
摘要： A system and method for multiple inputs, multiple outputs (MIMO) PSD allocation in a DSL system is disclosed. In some embodiments, the method may comprise monitoring system performance by performing a multi-ended line test (MELT), processing the MELT and allocating PSD based on at least one of system coupling power and system traffic.
摘要翻译：公开了DSL系统中的多输入多输出（MIMO）PSD分配的系统和方法。在一些实施例中，该方法可以包括通过执行多端线路测试（MELT）来监视系统性能，处理MELT并且基于系统耦合功率和系统业务中的至少一个来分配PSD。

3. 发明申请

US20050013379A1 Technique for improving multiple-channel multi-tone transmissions 失效
标题翻译：改善多声道多音调传输的技术
公开(公告)号：US20050013379A1
公开(公告)日：2005-01-20
申请号：US10874329
申请日：2004-06-24
申请人： Patrick Duvaut , Ehud Langberg , William Scholtz
发明人： Patrick Duvaut , Ehud Langberg , William Scholtz
IPC分类号： H04L27/26 , H04L27/00
CPC分类号： H04L1/0656 , H04L27/2602 , H04L27/2626 , H04L27/2647
摘要： A technique for improving multiple-channel multi-tone transmissions is disclosed. According to one particular embodiment, a method for transmitting data over at least two bonded channels is provided, wherein each of the at least two bonded channels comprises a plurality of tones. The method may comprise: transmitting a first symbol stream over a first tone in a first bonded channel and over a second tone in a second bonded channel, wherein the first tone is bonded to the second tone, and the transmissions over the first tone and the second tone are substantially in parallel; transmitting a second symbol stream over a third tone in the first bonded channel; and transmitting a third symbol stream over a fourth tone in the second bonded channel, wherein the third tone is bonded to the fourth tone, and the transmissions of the second symbol stream and the third symbol stream are substantially in parallel.
摘要翻译：公开了一种用于改善多声道多音调传输的技术。根据一个特定实施例，提供了一种用于在至少两个绑定信道上传输数据的方法，其中所述至少两个绑定信道中的每一个包括多个音调。该方法可以包括：通过第一绑定信道中的第一音调和第二绑定信道中的第二音调发送第一符号流，其中第一音调被绑定到第二音调，并且通过第一音调和第二音基本上是平行的; 在所述第一绑定信道中通过第三音调发送第二符号流; 以及在所述第二绑定信道中通过第四音调发送第三符号流，其中所述第三音调被绑定到所述第四音调，并且所述第二符号流和所述第三符号流的传输基本上是并行的。

4. 发明授权

US06829251B2 System and method for increasing data capacity in communication systems 有权
标题翻译：提高通信系统数据容量的系统和方法
公开(公告)号：US06829251B2
公开(公告)日：2004-12-07
申请号：US10315743
申请日：2002-12-10
申请人： Patrick Duvaut , Ehud Langberg , William Scholtz , Laurent Pierrugues , Oliver Moreno
发明人： Patrick Duvaut , Ehud Langberg , William Scholtz , Laurent Pierrugues , Oliver Moreno
IPC分类号： H04J116
CPC分类号： H04L12/66 , H04L27/2608 , H04L27/2647 , H04L47/10 , H04L47/38 , H04M11/062 , H04Q2213/13039 , H04Q2213/13176 , H04Q2213/1319 , H04Q2213/13191 , H04Q2213/13209 , H04Q2213/13389
摘要： Systems and methods for increasing data capacity in communication systems is presented. In one embodiment, line characteristics are determined, and a downstream bandwidth is adaptively allocated in response to the determined line characteristics. In this regard, the upstream and downstream bandwidths may be seen as adaptively changing as a function of line characteristics.
摘要翻译：介绍了增加通信系统数据容量的系统和方法。在一个实施例中，确定线路特性，响应于所确定的线路特性，自适应地分配下行带宽。在这方面，上行和下行带宽可以看作是根据线路特性的自适应变化。

5. 发明授权

US07653138B2 Technique for improving multiple-channel multi-tone transmissions 失效
标题翻译：改善多声道多音调传输的技术
公开(公告)号：US07653138B2
公开(公告)日：2010-01-26
申请号：US10874329
申请日：2004-06-24
申请人： Patrick Duvaut , Ehud Langberg , William Scholtz
发明人： Patrick Duvaut , Ehud Langberg , William Scholtz
IPC分类号： H04L27/00
CPC分类号： H04L1/0656 , H04L27/2602 , H04L27/2626 , H04L27/2647
摘要： A technique for improving multiple-channel multi-tone transmissions is disclosed. According to one particular embodiment, a method for transmitting data over at least two bonded channels is provided, wherein each of the at least two bonded channels comprises a plurality of tones. The method may comprise: transmitting a first symbol stream over a first tone in a first bonded channel and over a second tone in a second bonded channel, wherein the first tone is bonded to the second tone, and the transmissions over the first tone and the second tone are substantially in parallel; transmitting a second symbol stream over a third tone in the first bonded channel; and transmitting a third symbol stream over a fourth tone in the second bonded channel, wherein the third tone is bonded to the fourth tone, and the transmissions of the second symbol stream and the third symbol stream are substantially in parallel.
摘要翻译：公开了一种用于改善多声道多音调传输的技术。根据一个特定实施例，提供了一种用于在至少两个绑定信道上传输数据的方法，其中所述至少两个绑定信道中的每一个包括多个音调。该方法可以包括：通过第一绑定信道中的第一音调和第二绑定信道中的第二音调发送第一符号流，其中第一音调被绑定到第二音调，并且通过第一音调和第二音基本上是平行的; 在所述第一绑定信道中通过第三音调发送第二符号流; 以及在所述第二绑定信道中通过第四音调发送第三符号流，其中所述第三音调被绑定到所述第四音调，并且所述第二符号流和所述第三符号流的传输基本上是并行的。

6. 发明授权

US07406126B2 Implementation of smart DSL for LDSL systems 有权
标题翻译：实现LDSL系统的智能DSL
公开(公告)号：US07406126B2
公开(公告)日：2008-07-29
申请号：US10714655
申请日：2003-11-18
申请人： Patrick Duvaut , Ehud Langberg , Lujing Cai , Laurent Pierrugues , William Scholtz , Oliver Moreno , Feng Ouyang , Massimo Sorbara
发明人： Patrick Duvaut , Ehud Langberg , Lujing Cai , Laurent Pierrugues , William Scholtz , Oliver Moreno , Feng Ouyang , Massimo Sorbara
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L5/143 , H04L5/1438 , H04L27/2626 , H04Q2213/13039
摘要： Various embodiments for addressing the performance objectives of LDSL and examples of smart systems for LDSL are disclosed. An evaluation of the spectral compatibility of two LDSL modes based on two different downstream masks, identified herein as LDSL Wide and Narrow, is disclosed. Spectral compatibility is evaluated in accordance with existing rules. Other embodiments may further comprise determining features of upstream transmission.
摘要翻译：公开了用于解决LDSL的性能目标的各种实施例和用于LDSL的智能系统的示例。公开了基于两种不同下游掩模的两种LDSL模式的频谱兼容性的评估，这两种不同的下行掩码在本文中被标识为LDSL Wide和Narrow。光谱兼容性根据现有规则进行评估。其他实施例还可以包括确定上行传输的特征。

7. 发明申请

US20050213714A1 MIMO dynamic PSD allocation for DSL networks 有权
标题翻译：用于DSL网络的MIMO动态PSD分配
公开(公告)号：US20050213714A1
公开(公告)日：2005-09-29
申请号：US10808549
申请日：2004-03-25
申请人： Ehud Langberg , William Scholtz , Lujing Cai , Albert Rapaport , Shareq Rahman , Patrick Duvaut
发明人： Ehud Langberg , William Scholtz , Lujing Cai , Albert Rapaport , Shareq Rahman , Patrick Duvaut
IPC分类号： H04L1/00 , H04L5/02 , H04L27/26 , H04M1/24 , H04M3/08
CPC分类号： H04L5/023 , H04L1/0026 , H04L27/2608
摘要： A system and method for multiple inputs, multiple outputs (MIMO) PSD allocation in a DSL system is disclosed. In some embodiments, the method may comprise monitoring system performance by performing a multi-ended line test (MELT), processing the MELT and allocating PSD based on at least one of system coupling power and system traffic.
摘要翻译：公开了DSL系统中的多输入多输出（MIMO）PSD分配的系统和方法。在一些实施例中，该方法可以包括通过执行多端线路测试（MELT）来监视系统性能，处理MELT并且基于系统耦合功率和系统业务中的至少一个来分配PSD。

8. 发明授权

US08126038B2 System and method for selectable mask for LDSL 失效
标题翻译： LDSL可选掩码的系统和方法
公开(公告)号：US08126038B2
公开(公告)日：2012-02-28
申请号：US12392039
申请日：2009-02-24
申请人： Patrick Duvaut , Ehud Langberg
发明人： Patrick Duvaut , Ehud Langberg
IPC分类号： H04B1/38
CPC分类号： H04Q11/04 , H04Q2213/13039 , H04Q2213/13094 , H04Q2213/13204 , H04Q2213/13396
摘要： The present invention overcomes various problems by defining two upstream masks (U1, U2) and two downstream masks (D1, D2) and using a mask selectable system for the long reach digital subscriber line (LDSL), in which a unique modem feature is activated during handshake to automatically check for physical layer status in terms of spectral compatibility and, thus, automatically optimize the boosted mode with the use of the mask selectable system choose the best combination of upstream/downstream masks in any physical layer noise scenario.
摘要翻译：本发明通过定义两个上游掩码（U1，U2）和两个下行掩码（D1，D2）并使用用于长距离数字用户线（LDSL）的掩码可选择系统来克服各种问题，其中唯一的调制解调器特征被激活在握手期间，根据频谱兼容性自动检查物理层状态，因此，使用掩码可选择系统自动优化升压模式，在任何物理层噪声场景中选择上游/下游掩码的最佳组合。

9. 发明申请

US20110200140A1 Systems and Methods for MIMO Precoding in an xDSL System 有权
标题翻译： xDSL系统中MIMO预编码的系统和方法
公开(公告)号：US20110200140A1
公开(公告)日：2011-08-18
申请号：US13091651
申请日：2011-04-21
申请人： Patrick Duvaut , Amitkumar Mahadevan , Massimo Sorbara , Ehud Langberg
发明人： Patrick Duvaut , Amitkumar Mahadevan , Massimo Sorbara , Ehud Langberg
IPC分类号： H04L25/49
CPC分类号： H04B3/32 , H04L1/0042
摘要： One embodiment is a method for precoding data for transmission in a discrete multi-tone (DMT) system to cancel self-induced far end crosstalk (self-FEXT). The method comprises learning, by the system, characteristics associated with a plurality of N users within a digital subscriber line (xDSL) system to determine an initial off-diagonal multiple input multiple output (MIMO) precoder (ODMP) for a given tone frequency and converging towards an ODMP from the initial ODMP to cancel self-FEXT for the plurality of N users, wherein the ODMP is represented as a zero diagonal matrix containing only off-diagonal terms.
摘要翻译：一个实施例是用于在离散多音（DMT）系统中预编码用于传输的数据以消除自感应远端串扰（self-FEXT）的方法。该方法包括通过系统学习与数字用户线（xDSL）系统内的多个N个用户相关联的特征，以确定给定音频的初始非对角多输入多输出（MIMO）预编码器（ODMP），以及从初始ODMP收敛到ODMP以取消多个N个用户的自身FEXT，其中ODMP被表示为仅包含非对角项的零对角矩阵。

10. 发明授权

US07957477B2 Systems and methods for MIMO precoding in an xDSL system 有权
标题翻译：用于xDSL系统中MIMO预编码的系统和方法
公开(公告)号：US07957477B2
公开(公告)日：2011-06-07
申请号：US11845040
申请日：2007-08-25
申请人： Patrick Duvaut , Amitkumar Mahadevan , Massimo Sorbara , Ehud Langberg
发明人： Patrick Duvaut , Amitkumar Mahadevan , Massimo Sorbara , Ehud Langberg
IPC分类号： H04L27/28
CPC分类号： H04B3/32 , H04L1/0042
摘要： Systems and methods for off-diagonal MIMO precoders are described. At least one embodiment includes a method for precoding data for transmission in a discrete multi-tone (DMT) xDSL system to cancel self-induced far end crosstalk (self-FEXT) comprising: learning characteristics associated with a plurality of N users within the xDSL system to determine an initial off-diagonal multiple input multiple output (MIMO) precoder (ODMP) for a given tone frequency; and converging towards an optimum ODMP from the initial ODMP in order to cancel downstream self-FEXT for the plurality of N users, wherein the ODMP is represented as a zero diagonal matrix with only off-diagonal terms, and wherein the converging towards the optimum ODMP comprises: maximizing the channel capacity for the plurality of N users for the given tone frequency; and minimizing an increase in transmit power of the xDSL system relative to an original transmit power where a precoder is not active.
摘要翻译：描述了非对角MIMO预编码器的系统和方法。至少一个实施例包括用于预编码用于在离散多音（DMT）xDSL系统中传输的数据以消除自感应远端串扰（self-FEXT）的方法，包括：与xDSL内的多个N个用户相关联的学习特征系统确定用于给定音频的初始非对角多输入多输出（MIMO）预编码器（ODMP）; 并从最初的ODMP收敛到最佳的ODMP，以消除多个N个用户的下游自身FEXT，其中ODMP被表示为只有非对角项的零对角矩阵，并且其中朝向最佳ODMP 包括：使给定音调频率的多个N个用户的信道容量最大化; 并且最小化xDSL系统相对于预编码器不活动的原始发射功率的发射功率的增加。

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