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1. 发明授权

US08300518B2 Fast seamless joining of channels in a multi-channel communication system 有权
标题翻译：在多通道通信系统中快速无缝连接通道
公开(公告)号：US08300518B2
公开(公告)日：2012-10-30
申请号：US12060653
申请日：2008-04-01
申请人： Alexei Ashikhmin , Adriaan J. De Lind Van Wijngaarden , Gerhard Guenter Theodor Kramer , Carl Jeremy Nuzman , Philip Alfred Whiting
发明人： Alexei Ashikhmin , Adriaan J. De Lind Van Wijngaarden , Gerhard Guenter Theodor Kramer , Carl Jeremy Nuzman , Philip Alfred Whiting
IPC分类号： H04J3/10
CPC分类号： H04M3/18 , H04M3/30 , H04M3/34 , H04M2203/058
摘要： At least one channel is joined to a group of active channels in a communication system by transmitting control signals to configure respective customer premises equipment (CPE) of the active channels into a joining mode of operation, and transmitting a joining signature sequence to CPE of the joining channel over a downstream data signal path of the joining channel. A central office (CO) or other access node of the system receives correlation results from respective active channel CPE, estimates crosstalk from the joining channel into the active channels based on the correlation results, configures a precoder based on the estimated crosstalk, and adds the joining channel to the group of active channels. The channels may comprise respective subscriber lines of a DSL communication system.
摘要翻译：通过发送控制信号将至少一个信道连接到通信系统中的一组活动信道，以将活动信道的相应客户驻地设备（CPE）配置为加入操作模式，并将加入签名序列发送到在加入信道的下游数据信号路径上加入信道。该系统的中心局（CO）或其他接入节点从相应的有源信道CPE接收相关结果，基于相关结果估计从加入信道到有源信道的串扰，基于所估计的串扰配置预编码器，加入频道到活跃频道组。信道可以包括DSL通信系统的相应用户线路。

2. 发明申请

US20090116582A1 INTERPOLATION METHOD AND APPARATUS FOR INCREASING EFFICIENCY OF CROSSTALK ESTIMATION 有权
标题翻译：插值方法和装置提高了CROSSTALK估计的效率
公开(公告)号：US20090116582A1
公开(公告)日：2009-05-07
申请号：US11934347
申请日：2007-11-02
申请人： Alexei Ashikhmin , Adriaan J. De Lind Van Wijngaarden , Gerhard Guenter Theodor Kramer , Philip Alfred Whiting , Miroslav Zivkovic
发明人： Alexei Ashikhmin , Adriaan J. De Lind Van Wijngaarden , Gerhard Guenter Theodor Kramer , Philip Alfred Whiting , Miroslav Zivkovic
IPC分类号： H04L25/49
CPC分类号： H04B3/32 , H04B3/487
摘要： Techniques are disclosed that efficiently obtain channel crosstalk estimates in DSL systems and other communication systems that may include unsynchronized channels. For example, a method includes obtaining a first set of estimated measures of crosstalk for a first portion of a plurality of communication channels over which data signals are to be transmitted from a transmitter to a plurality of receivers, and interpolating a second set of estimated measures of crosstalk for a second portion of the plurality of communication channels based on the first set of estimated measures of crosstalk. The first portion of the plurality of communication channels may be a subset of the plurality of communication channels and the second portion of the plurality of communication channels is a remainder of the plurality of communication channels. Each estimated measure of crosstalk may relate to at least one tone associated with at least one of the plurality of communication channels.
摘要翻译：公开了在DSL系统和可能包括不同步信道的其他通信系统中有效地获得信道串扰估计的技术。例如，一种方法包括获得第一组估计的多个通信信道的第一部分的串扰测量值，数据信号将从该发送器发送到多个接收机，并且内插第二组估计度量基于所述第一组估计的串扰测量值，所述多个通信信道的第二部分的串扰。多个通信信道的第一部分可以是多个通信信道的子集，并且多个通信信道的第二部分是多个通信信道的剩余部分。每个估计的串扰测量可以涉及与多个通信信道中的至少一个相关联的至少一个音调。

3. 发明授权

US08300726B2 Interpolation method and apparatus for increasing efficiency of crosstalk estimation 有权
标题翻译：用于提高串扰估计效率的插值方法和装置
公开(公告)号：US08300726B2
公开(公告)日：2012-10-30
申请号：US11934347
申请日：2007-11-02
申请人： Alexei Ashikhmin , Adriaan J. De Lind Van Wijngaarden , Gerhard Guenter Theodor Kramer , Philip Alfred Whiting , Miroslav Zivkovic
发明人： Alexei Ashikhmin , Adriaan J. De Lind Van Wijngaarden , Gerhard Guenter Theodor Kramer , Philip Alfred Whiting , Miroslav Zivkovic
IPC分类号： H04K1/02
CPC分类号： H04B3/32 , H04B3/487
摘要： Techniques are disclosed that efficiently obtain channel crosstalk estimates in DSL systems and other communication systems that may include unsynchronized channels. For example, a method includes obtaining a first set of estimated measures of crosstalk for a first portion of a plurality of communication channels over which data signals are to be transmitted from a transmitter to a plurality of receivers, and interpolating a second set of estimated measures of crosstalk for a second portion of the plurality of communication channels based on the first set of estimated measures of crosstalk. The first portion of the plurality of communication channels may be a subset of the plurality of communication channels and the second portion of the plurality of communication channels is a remainder of the plurality of communication channels. Each estimated measure of crosstalk may relate to at least one tone associated with at least one of the plurality of communication channels.
摘要翻译：公开了在DSL系统和可能包括不同步信道的其他通信系统中有效地获得信道串扰估计的技术。例如，一种方法包括获得第一组估计的多个通信信道的第一部分的串扰测量值，数据信号将从该发送器发送到多个接收机，并且内插第二组估计度量基于所述第一组估计的串扰测量值，所述多个通信信道的第二部分的串扰。多个通信信道的第一部分可以是多个通信信道的子集，并且多个通信信道的第二部分是多个通信信道的剩余部分。每个估计的串扰测量可以涉及与多个通信信道中的至少一个相关联的至少一个音调。

4. 发明申请

US20090245081A1 Fast Seamless Joining of Channels in a Multi-Channel Communication System 有权
标题翻译：在多通道通信系统中快速无缝连接通道
公开(公告)号：US20090245081A1
公开(公告)日：2009-10-01
申请号：US12060653
申请日：2008-04-01
申请人： Alexei Ashikhmin , Adriaan J. De Lind Van Wijngaarden , Gerhard Guenter Kramer , Carl Jeremy Nuzman , Philip Alfred Whiting
发明人： Alexei Ashikhmin , Adriaan J. De Lind Van Wijngaarden , Gerhard Guenter Kramer , Carl Jeremy Nuzman , Philip Alfred Whiting
IPC分类号： H04J3/10
CPC分类号： H04M3/18 , H04M3/30 , H04M3/34 , H04M2203/058
摘要： At least one channel is joined to a group of active channels in a communication system by transmitting control signals to configure respective customer premises equipment (CPE) of the active channels into a joining mode of operation, and transmitting a joining signature sequence to CPE of the joining channel over a downstream data signal path of the joining channel. A central office (CO) or other access node of the system receives correlation results from respective active channel CPE, estimates crosstalk from the joining channel into the active channels based on the correlation results, configures a precoder based on the estimated crosstalk, and adds the joining channel to the group of active channels. The channels may comprise respective subscriber lines of a DSL communication system.
摘要翻译：通过发送控制信号将至少一个信道连接到通信系统中的一组活动信道，以将活动信道的相应客户驻地设备（CPE）配置为加入操作模式，并将加入签名序列发送到在加入信道的下游数据信号路径上加入信道。该系统的中心局（CO）或其他接入节点从相应的有源信道CPE接收相关结果，基于相关结果估计从加入信道到有源信道的串扰，基于所估计的串扰配置预编码器，加入频道到活跃频道组。信道可以包括DSL通信系统的相应用户线路。

5. 发明授权

US07809070B2 Crosstalk estimation methods and apparatus using auxiliary time-domain signals 有权
标题翻译：使用辅助时域信号的串扰估计方法和装置
公开(公告)号：US07809070B2
公开(公告)日：2010-10-05
申请号：US11753332
申请日：2007-05-24
申请人： Alexei Ashikhmin , Philip Alfred Whiting , Adriaan J. De Lind Van Wijngaarden
发明人： Alexei Ashikhmin , Philip Alfred Whiting , Adriaan J. De Lind Van Wijngaarden
IPC分类号： H04L27/28
CPC分类号： H04B3/487 , H04L27/2601
摘要： Techniques are disclosed for measuring crosstalk between at least two communication channels of a communication system. A receiver of the system receives a signal over a given one of the communication channels from a transmitter of the system. The receiver correlates the received signal with a sequence of time-domain signals associated with another of the communication channels, and generates a measure of crosstalk between the given communication channel and the other communication channel based on the correlation between the received signal and the sequence of time-domain signals. The sequence of time-domain signals may be selected from a designated set of M-sequences.
摘要翻译：公开了用于测量通信系统的至少两个通信信道之间的串扰的技术。系统的接收机从系统的发射器接收通过给定的一个通信信道的信号。接收器将接收到的信号与与另一个通信信道相关联的时域信号序列进行相关，并且基于接收信号和序列之间的相关性，生成给定通信信道与另一通信信道之间的串扰量度时域信号。可以从指定的一组M序列中选择时域信号的序列。

6. 发明申请

US20080291989A1 Crosstalk Estimation Methods and Apparatus Using Auxiliary Time-Domain Signals 有权
标题翻译：使用辅助时域信号的串扰估计方法和装置
公开(公告)号：US20080291989A1
公开(公告)日：2008-11-27
申请号：US11753332
申请日：2007-05-24
申请人： Alexei Ashikhmin , Philip Alfred Whiting , Adriaan J. De Lind Van Wijngaarden
发明人： Alexei Ashikhmin , Philip Alfred Whiting , Adriaan J. De Lind Van Wijngaarden
IPC分类号： H04B17/00 , H04J1/12 , H04L27/28
CPC分类号： H04B3/487 , H04L27/2601
摘要： Techniques are disclosed for measuring crosstalk between at least two communication channels of a communication system. A receiver of the system receives a signal over a given one of the communication channels from a transmitter of the system. The receiver correlates the received signal with a sequence of time-domain signals associated with another of the communication channels, and generates a measure of crosstalk between the given communication channel and the other communication channel based on the correlation between the received signal and the sequence of time-domain signals. The sequence of time-domain signals may be selected from a designated set of M-sequences.
摘要翻译：公开了用于测量通信系统的至少两个通信信道之间的串扰的技术。系统的接收机从系统的发射器接收通过给定的一个通信信道的信号。接收器将接收到的信号与与另一个通信信道相关联的时域信号序列进行相关，并且基于接收信号和序列之间的相关性，生成给定通信信道与另一通信信道之间的串扰量度时域信号。可以从指定的一组M序列中选择时域信号的序列。

7. 发明授权

US08054925B2 Method and apparatus for synchronizing a receiver 有权
标题翻译：用于同步接收机的方法和装置
公开(公告)号：US08054925B2
公开(公告)日：2011-11-08
申请号：US12141305
申请日：2008-06-18
申请人： Alexei Ashikhmin , Adriaan J. de Lind van Wijngaarden , Thomas L. Marzetta
发明人： Alexei Ashikhmin , Adriaan J. de Lind van Wijngaarden , Thomas L. Marzetta
IPC分类号： H04L7/00 , H03L7/00
CPC分类号： H04L27/2662 , H04L27/2607 , H04L27/2666 , H04L27/2678
摘要： Various embodiments generally relate to a method for synchronizing a receiver, said method including receiving a stream that includes a cyclic extension, estimating a size of the cyclic extension, extracting an amount of the stream according to the estimated size, and comparing the extracted amount to the stream to determine thereby a portion of the stream likely to include a symbol start point.
摘要翻译：各种实施例通常涉及用于同步接收机的方法，所述方法包括接收包括循环扩展的流，估计循环扩展的大小，根据估计大小提取流量，并将提取的量与该流由此确定流的一部分可能包括符号起始点。

8. 发明申请

US20090034668A1 METHOD AND APPARATUS FOR SYNCHRONIZING A RECEIVER 有权
标题翻译：用于同步接收器的方法和装置
公开(公告)号：US20090034668A1
公开(公告)日：2009-02-05
申请号：US12141305
申请日：2008-06-18
申请人： Alexei Ashikhmin , Adriaan J. de Lind van Wijngaarden , Thomas L. Marzetta
发明人： Alexei Ashikhmin , Adriaan J. de Lind van Wijngaarden , Thomas L. Marzetta
IPC分类号： H04L7/00 , H04L27/28
CPC分类号： H04L27/2662 , H04L27/2607 , H04L27/2666 , H04L27/2678
摘要： Various embodiments generally relate to a method for synchronizing a receiver, said method including receiving a stream that includes a cyclic extension, estimating a size of the cyclic extension, extracting an amount of the stream according to the estimated size, and comparing the extracted amount to the stream to determine thereby a portion of the stream likely to include a symbol start point.
摘要翻译：各种实施例通常涉及用于同步接收机的方法，所述方法包括接收包括循环扩展的流，估计循环扩展的大小，根据估计大小提取流量，并将提取的量与该流由此确定流的一部分可能包括符号起始点。

9. 发明授权

US07331009B2 Method and apparatus for link error prediction in a communication system 有权
标题翻译：通信系统中链路误差预测的方法和装置
公开(公告)号：US07331009B2
公开(公告)日：2008-02-12
申请号：US10778765
申请日：2004-02-13
申请人： Alexei Ashikhmin , Adriaan J. De Lind Van Wijngaarden , Nandu Gopalakrishnan , Jaehyeong Kim , Emina Soljanin
发明人： Alexei Ashikhmin , Adriaan J. De Lind Van Wijngaarden , Nandu Gopalakrishnan , Jaehyeong Kim , Emina Soljanin
IPC分类号： G08C25/02 , H04L1/18
CPC分类号： H04L1/1819 , H04L1/1845 , H04L1/20
摘要： A method is provided to accurately predict the probability of successfully recovering frames of (coded) information received over a wireless link, without having to decode the frame. This method includes receiving a first encoded signal and predicting link errors based on characteristics of the first encoded signal and variations in these characteristics before decoding the first encoded signal.
摘要翻译：提供了一种方法来准确地预测成功地恢复通过无线链路接收的（编码）信息的帧的概率，而不必对帧进行解码。该方法包括：在解码第一编码信号之前，基于第一编码信号的特性和这些特性的变化来接收第一编码信号和预测链路误差。

10. 发明授权

US07013116B2 MIMO systems having a channel decoder matched to a MIMO detector 有权
标题翻译：具有与MIMO检测器匹配的信道解码器的MIMO系统
公开(公告)号：US07013116B2
公开(公告)日：2006-03-14
申请号：US10180727
申请日：2002-06-26
申请人： Alexei Ashikhmin , Gerhard Guenter Theodor Kramer , Stephan Ten Brink
发明人： Alexei Ashikhmin , Gerhard Guenter Theodor Kramer , Stephan Ten Brink
IPC分类号： H04B1/16
CPC分类号： H04L1/005 , H04L1/0065 , H04L1/0618
摘要： A method and apparatus for reducing the number of erred bits in the decoded signal by using a channel decoder whose transfer characteristic is matched to the transfer characteristic of the MIMO detector. This means that the curve of the transfer characteristic of the MIMO detector is 1) above the curve of the reflected transpose of the transfer characteristic of the channel decoder for about 95% of the curve, and 2) close to the reflected transpose of the curve of the transfer characteristic of the channel decoder. Particularly, an LDPCC decoder can be used as the channel decoder and can be matched to the MIMO detector by matching 1) the transfer characteristic of the LDPCC decoder's CND to 2) the transfer characteristic of a combination of the MIMO detector and the LDPCC VND. Furthermore, the LDPCC can be similarly matched to any appropriate detector in addition to or instead of the MIMO detector. Additionally, a receiver can re-match the transfer characteristics of the detector and the channel decoder when the channel characteristics and/or SNR of the received signals change.
摘要翻译：一种用于通过使用其传输特性与MIMO检测器的传输特性匹配的信道解码器来减少解码信号中的错误比特数的方法和装置。这意味着MIMO检测器的传输特性的曲线是1）高于曲线的约95％的信道解码器的传输特性的反射转置曲线，2）接近曲线的反射转置的信道解码器的传输特性。具体来说，可以将LDPCC解码器用作信道解码器，并且可以通过匹配1）LDPCC解码器的CND的传输特性与MIMO检测器和LDPCC VND的组合的传输特性进行匹配来匹配MIMO检测器。此外，除了MIMO检测器之外或代替MIMO检测器，LDPCC可以类似地匹配于任何适当的检测器。另外，当接收信号的信道特性和/或SNR改变时，接收机可以重新匹配检测器和信道解码器的传输特性。

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