专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明申请

US20080298555A1 SYSTEMS AND METHODS FOR LOOP LENGTH ESTIMATION BASED ON PER-PORT CALIBRATION 失效
标题翻译：基于每个端口校准的环路长度估计的系统和方法
公开(公告)号：US20080298555A1
公开(公告)日：2008-12-04
申请号：US12044443
申请日：2008-03-07
申请人： Patrick Duvaut , Amitkumar Mahadevan , Vaibhav Dinesh
发明人： Patrick Duvaut , Amitkumar Mahadevan , Vaibhav Dinesh
IPC分类号： H04M3/30
CPC分类号： H04M3/302 , H04M3/085
摘要： Systems and methods for performing loop length estimation are described. One embodiment includes a method which comprises receiving an echo signal for a loop under test where the echo signal is a per-port calibrated echo response obtained using frequency domain reflectometry single-ended line testing (FDR-SELT). The method further comprises analyzing characteristics of the echo signal to perform a loop length estimation based on data relating to ripple frequency as a function of loop length.
摘要翻译：描述了用于执行环路长度估计的系统和方法。一个实施例包括一种方法，其包括接收用于测试环路的回波信号，其中回波信号是使用频域反射测量单端线测试（FDR-SELT）获得的每端口校准的回波响应。该方法还包括分析回波信号的特性，以便根据与纹波频率相关的数据作为循环长度的函数来执行环路长度估计。

52. 发明申请

US20080240368A1 SYSTEMS AND METHODS FOR BRIDGE TAP DETECTION BASED ON PER-PORT CALIBRATION 有权
标题翻译：基于每个端口校准的桥式检测系统和方法
公开(公告)号：US20080240368A1
公开(公告)日：2008-10-02
申请号：US12044489
申请日：2008-03-07
申请人： Patrick Duvaut , Amitkumar Mahadevan , Vaibhav Dinesh
发明人： Patrick Duvaut , Amitkumar Mahadevan , Vaibhav Dinesh
IPC分类号： H04M3/08
CPC分类号： H04M3/302 , H04M3/085
摘要： Systems and methods for performing bridge tap detection are described. One embodiment is a method which comprises receiving an echo signal for a loop under test where the echo signal is a per-port calibrated echo response obtained using frequency domain reflectometry single-ended line testing (FDR-SELT). The method further comprises analyzing the echo signal to determine whether differentiating features are present in the per-port calibrated echo signal in order to determine whether the loop under test is a bridge tapped loop.
摘要翻译：描述了用于执行桥接抽头检测的系统和方法。一个实施例是一种方法，其包括接收用于测试环路的回波信号，其中回波信号是使用频域反射测量单端线测试（FDR-SELT）获得的每端口校准的回波响应。该方法还包括分析回波信号以确定在每端口校准的回波信号中是否存在微分特征，以便确定被测环路是否是桥接抽头循环。

53. 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。

54. 发明申请

US20100017678A1 Hierarchical Trellis Coded Modulation 有权
标题翻译：分层网格编码调制
公开(公告)号：US20100017678A1
公开(公告)日：2010-01-21
申请号：US12565939
申请日：2009-09-24
申请人： Julien Pons , Patrick Duvaut , Oliver Moreno , Laurent Pierrugues
发明人： Julien Pons , Patrick Duvaut , Oliver Moreno , Laurent Pierrugues
IPC分类号： H03M13/05 , G06F11/10
CPC分类号： H04L1/006 , H04L1/0041 , H04L1/0045 , H04L1/0066 , H04L1/007 , H04L1/208 , H04L27/3416
摘要： A system and method for encoding information is disclosed. In one embodiment, information is encoded using a high protection code for the least significant bit and a low protection code for the next three most significant bits. The remaining bits are uncoded. The high protection code may be a turbo code and the low protection code may be a trellis coded modulation code. In this embodiment, the collection of bits is then mapped according to a diagonally shifted QAM constellation technique.
摘要翻译：公开了一种用于编码信息的系统和方法。在一个实施例中，使用用于最低有效位的高保护码和下一个三个最高有效位的低保护码对信息进行编码。其余位未编码。高保护码可以是turbo码，低保护码可以是网格编码调制码。在该实施例中，然后根据对角位移的QAM星座图技术来映射位的采集。

55. 发明申请

US20090310755A1 SYSTEMS AND METHODS FOR PERFORMING LOOP ANALYSIS BASED ON UN-CALIBRATED SINGLE-ENDED LINE TESTING 有权
标题翻译：基于非校准单端测试进行环路分析的系统和方法
公开(公告)号：US20090310755A1
公开(公告)日：2009-12-17
申请号：US12138692
申请日：2008-06-13
申请人： Vaibhav Dinesh , Kunal Raheja , Patrick Duvaut
发明人： Vaibhav Dinesh , Kunal Raheja , Patrick Duvaut
IPC分类号： H04M3/08 , H04M3/22 , H04B17/00 , H04B3/46
CPC分类号： H04M3/306 , G01R31/11 , H04M2203/055
摘要： Systems and methods for performing loop analysis are described. Some embodiments are directed to determining loop characteristics such as loop gauge, loop termination, and straight-loop departure. One embodiment includes a method for performing loop length estimation which comprises receiving an un-calibrated echo signal for a loop under test using frequency domain reflectometry single-ended line testing (FDR-SELT), a region associated with the loop under test, and a platform type. The method comprises classifying the loop under test and outputting a loop length estimate based on the classification of the loop under test and based on one of a ripple-period approach and a template-matching approach.
摘要翻译：描述用于执行循环分析的系统和方法。一些实施例涉及确定环路特性，例如环路规，环路终端和直线回路。一个实施例包括一种用于执行环路长度估计的方法，该方法包括使用频域反射测量单端线路测试（FDR-SELT），与被测环路相关的区域来接收待测环路的未校准回声信号，以及平台类型。该方法包括对被测环路进行分类，并根据测试环路的分类，并根据纹波周期方法和模板匹配方法之一输出环路长度估计。

56. 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。

57. 发明授权

US07103097B1 System and method for reducing peak-to-average ratio (PAR) values 有权
标题翻译：降低峰均比（PAR）值的系统和方法
公开(公告)号：US07103097B1
公开(公告)日：2006-09-05
申请号：US10224726
申请日：2002-08-20
申请人： Patrick Duvaut , Laurent Pierrugues
发明人： Patrick Duvaut , Laurent Pierrugues
IPC分类号： H04B1/38
CPC分类号： H04L27/2614
摘要： A system and method for reducing peak-to-average ratio (PAR) values in signal transmission systems is presented. The presented approach divides a plurality of symbols into a number of non-overlapping subsets of symbols, and manipulates each of the non-overlapping subsets of symbols to produce a plurality of sub-sequences. A strategic manipulation of the subsets of symbols results in the reduction of PAR values.
摘要翻译：提出了一种用于降低信号传输系统中的峰均比（PAR）值的系统和方法。所呈现的方法将多个符号划分成多个非重叠的符号子集，并且操纵每个非重叠符号子集以产生多个子序列。对符号子集的战略操纵会导致PAR值的降低。

58. 发明申请

US20060078062A1 Method and system for a turbo trellis coded modulation scheme for communication systems 有权
公开(公告)号：US20060078062A1
公开(公告)日：2006-04-13
申请号：US11248224
申请日：2005-10-13
申请人： Julien Pons , Patrick Duvaut
发明人： Julien Pons , Patrick Duvaut
IPC分类号： H04L23/02
CPC分类号： H04L27/3433 , H03M13/256 , H03M13/258 , H04L1/0041 , H04L1/005 , H04L1/006 , H04L1/0066 , H04L27/18 , H04L27/2601 , H04L27/2602 , H04L27/3405 , H04L27/3416 , H04M11/062
摘要： Method and System for evaluating a turbo-coding scheme suitable for VDSL2 systems. The scheme is a Turbo-Trellis Coded Modulation TTCM that makes use of a Parallel Concatenated Convolutional Code (PCCC) including an inner Latin square/rectangular matrix of Random sequence pattern Interleaver (LRI) of approximately 2044 bits. In the presence of the outer Reed Solomon Code but without an outer interleaver (fast mode), the method and system provides 7.1 dB of average net coding gain, i.e., 2.6 dB of coding gain improvement relative to the standard 16 states 4-dimensional (4-D) trellis code used in current ADSL2 systems. The substantial coding gain achieved through the method and system, leads to an increase in the VDSL2 rate by 38% at 6 kft against local exchange carriers, such as ILEC (SBC) conditions with approximately 1.5 ms of latency. By encoding only two bits per tone (i.e., 1 bit per dimension), the turbo code implementation complexity is kept reasonable. Finally, the coded modulation scheme supports very small constellations, allowing transmitting spectral efficiency as low as 0.5 bit/sec/Hz over Binary Phase Shift Keying (BPSK) constellations at a signal-to-noise-ration (SNR) very close to the Shannon bound.

59. 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。

60. 发明授权

US08418004B2 Back channel communication 有权
标题翻译：后通道通信
公开(公告)号：US08418004B2
公开(公告)日：2013-04-09
申请号：US13046991
申请日：2011-03-14
申请人： Massimo Sorbara , Patrick Duvaut , Yan Wu
发明人： Massimo Sorbara , Patrick Duvaut , Yan Wu
IPC分类号： G06F11/00 , G01R31/28 , H04B1/38 , H04B3/46
CPC分类号： H04L12/66 , H04B3/32
摘要： Various embodiments are described for back channel communication. One embodiment is a method that comprises receiving data at customer premises equipment (CPE), determining at least one error in the received data, formatting the determined error for communication to a central office (CO), and sending the formatted error to the CO via a back channel, wherein the formatted error is sent between sync frames of a discrete multitone (DMT) superframe.
摘要翻译：对于后向信道通信描述了各种实施例。一个实施例是一种方法，其包括在客户驻地设备（CPE）处接收数据，确定接收到的数据中的至少一个错误，将确定的错误格式化为中心局（CO），并将格式化的错误发送到CO经由背信道，其中格式化的错误在离散多音（DMT）超帧的同步帧之间发送。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式