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1. 发明授权

US08498408B2 Crosstalk estimation and power setting based on interpolation in a multi-channel communication system 有权
标题翻译：基于多通道通信系统中插值的串扰估计和功率设置
公开(公告)号：US08498408B2
公开(公告)日：2013-07-30
申请号：US12493328
申请日：2009-06-29
申请人： Alexei E. Ashikhmin , Philip Alfred Whiting
发明人： Alexei E. Ashikhmin , Philip Alfred Whiting
IPC分类号： H04M9/00 , H04M1/76 , H04M7/00
CPC分类号： H04B3/32
摘要： An access node of a communication system comprises a plurality of transmitters adapted for communication with at least one receiver over a plurality of channels. The access node is operative to obtain estimated crosstalk coefficients between a joining channel and an active channel, and to set a power level of at least one signal transmitted over the joining channel based on the estimated crosstalk coefficients. The access node obtains the estimated crosstalk coefficients by first obtaining a subset of the estimated crosstalk coefficients and subsequently determining additional ones of the estimated crosstalk coefficients by applying an interpolation process to the estimated crosstalk coefficients in the subset. The access node sets the power level of the signal transmitted over the joining channel in a manner that ensures maintenance of a desired performance characteristic for the active channel.
摘要翻译：通信系统的接入节点包括适于与多个信道上的至少一个接收机通信的多个发射机。接入节点可操作以获得加入信道和活动信道之间的估计的串扰系数，并且基于估计的串扰系数来设置通过加入信道发送的至少一个信号的功率电平。接入节点通过首先获得所估计的串扰系数的子集并且随后通过对所述子集中估计的串扰系数应用内插处理来确定估计的串扰系数中的另外一个来获得估计的串扰系数。接入节点以确保维持活动信道的期望性能特征的方式设置通过连接信道发送的信号的功率电平。

2. 发明申请

US20090296865A1 METHODS AND APPARATUS FOR PROVIDING SYNCHRONIZATION IN A MULTI-CHANNEL COMMUNICATION SYSTEM 有权
标题翻译：在多通道通信系统中提供同步的方法和装置
公开(公告)号：US20090296865A1
公开(公告)日：2009-12-03
申请号：US12130253
申请日：2008-05-30
申请人： Alexei E. Ashikhmin , Hungkei Keith Chow , Adriaan J. De Lind Van Wijngaarden , Jan Willem Hellenthal , Jean Gerardus Leonardus Jennen , Gerhard Guenter Theodor Kramer , Carl Robert Posthuma , Harmanus van Tellingen , Philip Alfred Whiting , Miroslav Zivkovic
发明人： Alexei E. Ashikhmin , Hungkei Keith Chow , Adriaan J. De Lind Van Wijngaarden , Jan Willem Hellenthal , Jean Gerardus Leonardus Jennen , Gerhard Guenter Theodor Kramer , Carl Robert Posthuma , Harmanus van Tellingen , Philip Alfred Whiting , Miroslav Zivkovic
IPC分类号： H04L7/00
CPC分类号： H04L5/14 , H04J3/0682 , H04L5/0023 , H04L5/0058
摘要： A multi-channel processing module is arranged in series with multiple channels of a communication system. The processing module synchronizes downstream symbols among the channels, and synchronizes downstream symbols for at least a given one of the channels with upstream symbols for that channel. The synchronization of downstream symbols among the channels and the synchronization of downstream symbols for at least the given channel with upstream symbols for that channel are collectively achieved by adjusting downstream and upstream adjustable delay elements associated with respective downlink and uplink signal paths in the multi-channel processing module. The channels may comprise respective subscriber lines of a DSL communication system.
摘要翻译：多通道处理模块与通信系统的多个通道串联布置。处理模块同步信道之间的下游符号，并且为至少给定的一个信道同步用于该信道的上行符号的下游符号。通过调整与多个信道中的相应下行链路和上行链路信号路径相关联的下游和上游可调节延迟单元，共同地实现至少给定信道的下行符号与下行符号之间的同步，以及用于该信道的上行符号的下游符号的同步处理模块。信道可以包括DSL通信系统的相应用户线路。

3. 发明申请

US20100303136A1 Channel Estimation in a Multi-Channel Communication System Using Pilot Signals Having Quasi-Orthogonal Subpilots 有权
标题翻译：使用具有准正交子跳频的导频信号的多信道通信系统中的信道估计
公开(公告)号：US20100303136A1
公开(公告)日：2010-12-02
申请号：US12474432
申请日：2009-05-29
申请人： Alexei E. Ashikhmin , Philip Alfred Whiting
发明人： Alexei E. Ashikhmin , Philip Alfred Whiting
IPC分类号： H04L5/16
CPC分类号： H04L5/0048 , H04B3/32 , H04L5/0066 , H04L5/1438 , H04L25/0226 , H04L27/261
摘要： An access node of a communication system comprises a plurality of transmitters adapted for communication with at least one receiver. The access node is operative to transmit pilot signals from respective associated ones of the transmitters, to estimate channel coefficients between the transmitters and the receiver, and to utilize the estimated channel coefficients to control at least one data signal sent by at least one of the transmitters. The pilot signals are partitioned into a plurality of sets of pilot signals such that pilot signals from the same set have respective subpilots that are orthogonal to one another and pilot signals from different sets have respective subpilots that are not orthogonal to one another but are instead quasi-orthogonal to one another. The pilot signals are associated with the respective transmitters based on the partitioning of the pilot signals into sets.
摘要翻译：通信系统的接入节点包括适于与至少一个接收机通信的多个发射机。接入节点可操作地从相应的相关联的发射机发送导频信号，以估计发射机和接收机之间的信道系数，并且利用所估计的信道系数来控制由至少一个发射机发送的至少一个数据信号。导频信号被划分成多组导频信号，使得来自同一组的导频信号具有彼此正交的相应子命令，并且来自不同组的导频信号具有彼此不正交的相应子跳，而是准 - 彼此正交。导频信号基于将导频信号划分成集合而与各个发射机相关联。

4. 发明申请

US20120106605A1 Detection and Correction of Impulse Noise in Communication Channel Crosstalk Estimates 有权
标题翻译：通信通道串扰估计中脉冲噪声的检测和校正
公开(公告)号：US20120106605A1
公开(公告)日：2012-05-03
申请号：US12915743
申请日：2010-10-29
申请人： Alexei E. Ashikhmin , Philip Alfred Whiting
发明人： Alexei E. Ashikhmin , Philip Alfred Whiting
IPC分类号： H04B1/38 , H04B17/00
CPC分类号： H04L25/0228 , H04B3/487
摘要： An access node of a communication system is configured to control crosstalk between channels of the system. A set of L distinct and linearly independent pilot signals is generated, with each pilot signal having length n, where n>L such that L−n linearly independent n-tuples are available for use in detection and correction of impulse noise. In an illustrative embodiment, the L pilot signals are mutually orthogonal. The L pilot signals are transmitted over respective ones of the channels, and one or more of the pilot signals as received over their respective channels are processed to detect the presence of impulse noise. A crosstalk estimate corrected for the detected impulse noise is generated and utilized to control crosstalk between two or more of the channels.
摘要翻译：通信系统的接入节点被配置为控制系统的信道之间的串扰。产生一组L个不同且线性独立的导频信号，每个导频信号具有长度n，其中n> L，使得L-n个线性独立的n元组可用于脉冲噪声的检测和校正。在说明性实施例中，L个导频信号是相互正交的。 L个导频信号通过相应的信道发送，并且通过它们各自的信道接收的一个或多个导频信号被处理以检测脉冲噪声的存在。生成并利用针对检测到的脉冲噪声校正的串扰估计来控制两个或更多个信道之间的串扰。

5. 发明授权

US08018868B2 Device and associated method for crosstalk estimation 有权
标题翻译：用于串扰估计的装置和相关方法
公开(公告)号：US08018868B2
公开(公告)日：2011-09-13
申请号：US12457412
申请日：2009-06-10
申请人： Carl J. Nuzman , Adriaan J. de Lind van Wijngaarden , Philip A. Whiting , Jochen J. M. Maes , Gerhard G. T. Kramer , Hungkei Chow , Alexei E. Ashikhmin
发明人： Carl J. Nuzman , Adriaan J. de Lind van Wijngaarden , Philip A. Whiting , Jochen J. M. Maes , Gerhard G. T. Kramer , Hungkei Chow , Alexei E. Ashikhmin
IPC分类号： H04L12/26
CPC分类号： H04L27/261 , H04B3/32 , H04B3/487 , H04L1/20 , H04L25/0206
摘要： The present invention relates to a crosstalk estimation device for estimating crosstalk between communication lines in a precoding group. The crosstalk estimation device comprises transmission means for transmitting a pilot sequence and reception means for receiving error feedback on one or more communication lines in the precoding group. The crosstalk estimation device further comprises crosstalk estimation means for combining the pilot sequence with the error feedback in order to obtain a crosstalk estimation between the communication lines. The device further comprises selection means for selecting a subset of one or more communication lines from the precoding group. The transmission means are adapted to transmit the pilot sequence only on the subset.
摘要翻译：串扰估计装置技术领域本发明涉及一种用于估计预编码组中的通信线路之间的串扰的串扰估计装置。串扰估计装置包括用于发送导频序列的发送装置和用于在预编码组中的一个或多个通信线路上接收错误反馈的接收装置。串扰估计装置还包括用于将导频序列与错误反馈组合的串扰估计装置，以便获得通信线路之间的串扰估计。该设备还包括用于从预编码组中选择一条或多条通信线路的子集的选择装置。发送装置适于仅在子集上发送导频序列。

6. 发明申请

US20100329444A1 Crosstalk Estimation and Power Setting Based on Interpolation in a Multi-Channel Communication System 有权
标题翻译：基于多通道通信系统插值的串扰估计和功率设置
公开(公告)号：US20100329444A1
公开(公告)日：2010-12-30
申请号：US12493328
申请日：2009-06-29
申请人： Alexei E. Ashikhmin , Philip Alfred Whiting
发明人： Alexei E. Ashikhmin , Philip Alfred Whiting
IPC分类号： H04B3/32
CPC分类号： H04B3/32
摘要： An access node of a communication system comprises a plurality of transmitters adapted for communication with at least one receiver over a plurality of channels. The access node is operative to obtain estimated crosstalk coefficients between a joining channel and an active channel, and to set a power level of at least one signal transmitted over the joining channel based on the estimated crosstalk coefficients. The access node obtains the estimated crosstalk coefficients by first obtaining a subset of the estimated crosstalk coefficients and subsequently determining additional ones of the estimated crosstalk coefficients by applying an interpolation process to the estimated crosstalk coefficients in the subset. The access node sets the power level of the signal transmitted over the joining channel in a manner that ensures maintenance of a desired performance characteristic for the active channel.
摘要翻译：通信系统的接入节点包括适于与多个信道上的至少一个接收机通信的多个发射机。接入节点可操作以获得加入信道和活动信道之间的估计的串扰系数，并且基于估计的串扰系数来设置通过加入信道发送的至少一个信号的功率电平。接入节点通过首先获得所估计的串扰系数的子集并且随后通过对所述子集中估计的串扰系数应用内插处理来确定估计的串扰系数中的另外一个来获得估计的串扰系数。接入节点以确保维持活动信道的期望性能特征的方式设置通过连接信道发送的信号的功率电平。

7. 发明申请

US20100177855A1 Power Control Using Denoised Crosstalk Estimates in a Multi-Channel Communication System 有权
标题翻译：使用多通道通信系统中的去噪串扰估计进行功率控制
公开(公告)号：US20100177855A1
公开(公告)日：2010-07-15
申请号：US12352896
申请日：2009-01-13
申请人： Alexei E. Ashikhmin , Philip Alfred Whiting
发明人： Alexei E. Ashikhmin , Philip Alfred Whiting
IPC分类号： H04B1/10
CPC分类号： H04B3/487
摘要： An access node of a communication system is configured to generate denoised crosstalk estimates for respective channels of the system and to adjust power levels of signals transmitted over one or more of the channels based on the denoised crosstalk estimates. The access node obtains crosstalk estimates for the respective channels. The access node is configured to convert the crosstalk estimate for a given channel to a discrete transform domain, to substantially eliminate in the discrete transform domain one or more designated portions of the crosstalk estimate for the given channel, and to convert remaining portions of the crosstalk estimate for the given channel back from the discrete transform domain to obtain the corresponding denoised crosstalk estimate for the given channel. The access node may comprise one or more central offices of a DSL communication system.
摘要翻译：通信系统的接入节点被配置为针对系统的各个信道生成去噪的串扰估计，并且基于去噪的串扰估计来调整在一个或多个信道上发送的信号的功率电平。接入节点获得各个信道的串扰估计。接入节点被配置为将给定信道的串扰估计转换为离散变换域，以在离散变换域中基本上消除给定信道的串扰估计的一个或多个指定部分，并且将串扰的剩余部分从离散变换域估计给定通道，以获得给定通道的相应的去噪串扰估计。接入节点可以包括DSL通信系统的一个或多个中心局。

8. 发明申请

US20090180405A1 MIMO Communication System with User Scheduling and Modified Precoding Based on Channel Vector Magnitudes 有权
标题翻译：基于通道矢量幅度的用户调度和修改预编码的MIMO通信系统
公开(公告)号：US20090180405A1
公开(公告)日：2009-07-16
申请号：US12195087
申请日：2008-08-20
申请人： Alexei E. Ashikhmin , Jubin Jose , Philip Alfred Whiting
发明人： Alexei E. Ashikhmin , Jubin Jose , Philip Alfred Whiting
IPC分类号： H04B7/212
CPC分类号： H04B7/0452 , H04B7/0434 , H04B7/0626
摘要： A multiple-input, multiple-output (MIMO) communication system is configured to perform user scheduling and associated precoding. The system includes multiple terminals and at least one base station configured to communicate with the terminals. The base station is operative to obtain channel vectors for respective ones of the terminals, to select a subset of the terminals based on magnitudes of the respective channel vectors, to compute a precoding matrix using the channel vectors of the selected subset of terminals, and to utilize the preceding matrix to control transmission to the selected subset of terminals. The system may be, for example, a time-division duplex (TDD) multi-user MIMO system in which the multiple terminals comprise autonomous single-antenna terminals.
摘要翻译：多输入多输出（MIMO）通信系统被配置为执行用户调度和相关联的预编码。该系统包括多个终端和被配置为与终端进行通信的至少一个基站。基站可操作以获得各个终端的信道向量，基于各个信道向量的大小来选择终端的子集，以使用所选择的终端子集的信道向量来计算预编码矩阵，并且利用前面的矩阵来控制到所选择的终端子集的传输。该系统可以是例如时分双工（TDD）多用户MIMO系统，其中多个终端包括自主单天线终端。

9. 发明授权

US08830812B2 Optimizing precoder settings using average SINR reports for groups of tones 有权
标题翻译：使用平均SINR报告优化预编码器设置，以了解组音
公开(公告)号：US08830812B2
公开(公告)日：2014-09-09
申请号：US12197409
申请日：2008-08-25
申请人： Alexei E. Ashikhmin , Adriaan J. De Lind Van Wijngaarden , Gerhard Guenter Theodor Kramer , Jochen Maes , Carl Jeremy Nuzman , Carl Robert Posthuma , Danny Van Bruyssel , Jan S. Verlinden , Philip Alfred Whiting , Miroslav Zivkovic
发明人： Alexei E. Ashikhmin , Adriaan J. De Lind Van Wijngaarden , Gerhard Guenter Theodor Kramer , Jochen Maes , Carl Jeremy Nuzman , Carl Robert Posthuma , Danny Van Bruyssel , Jan S. Verlinden , Philip Alfred Whiting , Miroslav Zivkovic
IPC分类号： H04J1/12 , H04B3/20
CPC分类号： H04B3/32 , H04B7/0417 , H04B7/0632 , H04B17/318 , H04B17/345 , H04J14/02 , H04L5/0023 , H04L25/03343 , H04L2025/03414 , H04L2025/03426
摘要： Techniques are disclosed for compensating for crosstalk using adaptation of data signals transmitted over respective channels of a communication network. In one example, a method comprises the following steps. Data is transmitted to a communication network device via a communication line during a sequence of periods. For each period of the sequence of periods, a separate value of a measure of crosstalk that was measured at the communication network device is received, each value being an average of measurements at the device of measures of crosstalk for a plurality of communication network signal subcarriers. For each individual signal subcarrier of the plurality, a matrix is updated based on the received values, the matrix being configured to precode data transmissions to the communication network device over the individual signal subcarrier. The communication network may be a DSL system, the signal subcarriers may be DSL tones, and the measure of crosstalk may be a SINR value.
摘要翻译：公开了用于通过在通信网络的各个信道上发送的数据信号的适配来补偿串扰的技术。在一个示例中，一种方法包括以下步骤。在一段时间段内，数据通过通信线路传送到通信网络设备。对于周期序列的每个周期，接收在通信网络设备处测量的串扰度量的单独值，每个值是在多个通信网络信号子载波的串扰测量装置处的测量的平均值。对于多个的每个单独的信号副载波，基于接收的值更新矩阵，该矩阵被配置为通过各个信号副载波对数据传输进行通信网络设备的数据传输。通信网络可以是DSL系统，信号子载波可以是DSL音调，并且串扰的测量可以是SINR值。

10. 发明申请

US20110075834A1 CROSSTALK CONTROL USING DELAYED POST-COMPENSATION IN A MULTI-CHANNEL COMMUNICATION SYSTEM 审中-公开
标题翻译：在多通道通信系统中使用延迟后补偿的波形控制
公开(公告)号：US20110075834A1
公开(公告)日：2011-03-31
申请号：US12570093
申请日：2009-09-30
申请人： Alexei E. Ashikhmin , Adriaan J. De Lind Van Wijngaarden , Michael L.F. Peeters , Philip Alfred Whiting
发明人： Alexei E. Ashikhmin , Adriaan J. De Lind Van Wijngaarden , Michael L.F. Peeters , Philip Alfred Whiting
IPC分类号： H04B1/12 , H04M1/74
CPC分类号： H04M3/34 , H04B3/32
摘要： An access node of a communication system receives signals over respective first and second channels of the system, processes the signal received over the second channel and an initialization signal associated with the first channel to obtain estimated crosstalk coefficients characterizing crosstalk from the first channel into the second channel, introduces respective predetermined delays into the respective signals received over the first and second channels, and utilizes the estimated crosstalk coefficients to adjust the signal received over the second channel as delayed by the corresponding predetermined delay in order to compensate for the crosstalk from the first channel into the second channel. The first and second channels may comprise respective joining and active subscriber lines of a DSL system.
摘要翻译：通信系统的接入节点通过系统的相应第一和第二信道接收信号，处理通过第二信道接收的信号和与第一信道相关联的初始化信号，以获得表征从第一信道到第二信道的串扰的估计的串扰系数将相应的预定延迟引入到通过第一和第二信道接收的相应信号中，并且利用所估计的串扰系数来调整在第二信道上接收的信号延迟相应的预定延迟，以补偿来自第一信道的串扰通道进入第二个通道。第一和第二信道可以包括DSL系统的相应加入和活动用户线路。

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