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11. 发明授权

US07274735B2 Constellation selection in a communication system 有权
标题翻译：通讯系统中的星座选择
公开(公告)号：US07274735B2
公开(公告)日：2007-09-25
申请号：US10273558
申请日：2002-10-18
申请人： Itay Lusky , Daniel Wajcer , Yosef Bendel , Yigal Bitran , Naftali Sommer , Ofir Shalvi , Zvi Reznic , Ariel Yagil , Eli Haim
发明人： Itay Lusky , Daniel Wajcer , Yosef Bendel , Yigal Bitran , Naftali Sommer , Ofir Shalvi , Zvi Reznic , Ariel Yagil , Eli Haim
IPC分类号： H04B3/46
CPC分类号： H04L1/20 , H04L1/0001 , H04L1/0003 , H04L1/0017 , H04L1/0019
摘要： A method is provided to provide data to automatically estimate channel performance in a communication system if a different order constellation is used comprising the steps of: receiving an input signal from the channel; passing the input signal to a slicer having an output signal; determining signal noise by taking the difference between the input signal and output signal; identifying a beginning of a noise event when the signal noise is greater than a predefined first threshold; identifying an end of a noise event when the signal noise is less than a predefined second threshold; and providing for output the beginning of the noise event and the end of the noise event. Other systems and methods are disclosed.
摘要翻译：提供一种提供数据以自动估计通信系统中的信道性能的方法，如果使用不同的订单星座包括以下步骤：从信道接收输入信号; 将输入信号传递到具有输出信号的限幅器; 通过取输入信号和输出信号之差来确定信号噪声; 当信号噪声大于预定义的第一阈值时，识别噪声事件的开始; 当信号噪声小于预定义的第二阈值时，识别噪声事件的结束; 并提供输出噪声事件的开始和噪声事件的结束。公开了其它系统和方法。

12. 发明授权

US07257176B2 Method of frequency and phase offset estimation using least square method in a burst receiver 有权
标题翻译：在脉冲串接收机中使用最小二乘法的频率和相位偏移估计方法
公开(公告)号：US07257176B2
公开(公告)日：2007-08-14
申请号：US10438400
申请日：2003-05-15
申请人： Naftali Sommer , Itay Lusky , Lior Ophir
发明人： Naftali Sommer , Itay Lusky , Lior Ophir
IPC分类号： H04L27/06
CPC分类号： H04B1/7075 , H04L2027/0046 , H04L2027/0067 , H04L2027/0095
摘要： A method provides frequency and phase offset estimation in a SCDMA burst receiver (such as a DOCSIS 2.0 SCDMA burst receiver) by application of the known Least Square (LS) parameter estimation algorithm to a pre-known transmitted sequence, called preamble, in order to optimally characterize the phase and frequency offsets affecting the transmitted data. The LS parameter estimation algorithm is adapted to SCDMA burst receiver specifications by changing index calculations to fit according to SCDMA preamble locations. Improved estimation accuracy can be achieved by using weighted least squares that disregard symbols affected by impulse and burst noise. Weighted least squares can further impart more weight to last symbols to more accurately estimate contemporary impairments. The method is particularly useful for communication systems having large frequency and phase offsets as in the DOCSIS 2.0 SCDMA burst receiver.
摘要翻译：一种方法通过将已知的最小二乘法（LS）参数估计算法应用于称为前导码的已知传输序列来提供SCDMA突发接收机（例如DOCSIS 2.0 SCDMA突发接收机）中的频率和相位偏移估计，以便最佳地表征影响传输数据的相位和频率偏移。 LS参数估计算法通过改变索引计算来适应SCDMA突发接收机规范，以适应SCDMA前导码位置。通过使用忽略受脉冲和突发噪声影响的符号的加权最小二乘法，可以提高估计精度。加权最小二乘法可进一步赋予最后符号更多的权重以更准确地估计当代障碍。该方法对于具有大的频率和相位偏移的通信系统特别有用，如DOCSIS 2.0 SCDMA突发接收机。

13. 发明授权

US06751269B1 Bit-interleaved coded modulation for CATV upstream channels 有权
标题翻译： CATV上行通道的位交织编码调制
公开(公告)号：US06751269B1
公开(公告)日：2004-06-15
申请号：US09480418
申请日：2000-01-11
申请人： Ofir Shalvi , Itay Lusky , Zvi Reznic , Daniel Wajcer , Ariel Yagil
发明人： Ofir Shalvi , Itay Lusky , Zvi Reznic , Daniel Wajcer , Ariel Yagil
IPC分类号： H04L2736
CPC分类号： H04L1/0059 , H04L1/0041 , H04L1/0069 , H04L1/0071 , H04L27/36
摘要： A bit-interleaved encoder for a CATV upstream channel is provided having a convolutional encoder for receiving data values, a bit-interleaver interconnected with said encoder, and a symbol mapper interconnected with said bit-interleaver.
摘要翻译：提供了一种用于CATV上行信道的位交织编码器，其具有用于接收数据值的卷积编码器，与所述编码器互连的位交织器和与所述位交织器互连的符号映射器。

14. 发明授权

US08165168B2 Zone synchronization in wireless communication networks 有权
标题翻译：无线通信网络中的区域同步
公开(公告)号：US08165168B2
公开(公告)日：2012-04-24
申请号：US12238109
申请日：2008-09-25
申请人： Itay Lusky , Yigal Bitran
发明人： Itay Lusky , Yigal Bitran
IPC分类号： H04J3/06 , H04W4/00 , H04W36/00
CPC分类号： H04W56/0005 , H04W28/04
摘要： A communication terminal includes a Radio Frequency (RF) unit and a baseband processor. The RF unit is operative to receive signals from a Base Station (BS) of a wireless communication network using a communication protocol that defines time frames divided in a time domain into zones. Each zone corresponds to a respective communication mode between the BS and the terminal and occupies respective time intervals within the frames.The baseband processor is coupled to receive from the BS via the RF unit synchronization information indicating whether the time intervals allocated to at least a given zone by the BS and by at least one other BS of the wireless communication network are synchronized with one another, and to process the signals received from the BS so as to cancel, responsively to the synchronization information, interference caused to the signals by the at least one other BS.
摘要翻译：通信终端包括射频（RF）单元和基带处理器。 RF单元可操作以使用将在时域中划分的时间帧定义为区域的通信协议从无线通信网络的基站（BS）接收信号。每个区域对应于BS和终端之间的相应通信模式，并且占据帧内的各个时间间隔。基带处理器经由RF单元经由RF单元接收来自BS的同步信息，该信号指示由BS和至少一个无线通信网络的其他BS分配给给定区域的时间间隔是否彼此同步，以及处理从BS接收到的信号，以便响应于同步信息来取消由至少一个其他BS对信号的干扰。

15. 发明授权

US08045652B1 Efficient decoding of spatially-multiplexed signals 有权
标题翻译：空间复用信号的有效解码
公开(公告)号：US08045652B1
公开(公告)日：2011-10-25
申请号：US12029142
申请日：2008-02-11
申请人： Yigal Bitran , Itay Lusky , Ariel Yagil
发明人： Yigal Bitran , Itay Lusky , Ariel Yagil
IPC分类号： H04L27/06
CPC分类号： H04L5/0023 , H04L27/22
摘要： A method for communication includes receiving a spatially-multiplexed signal using multiple receivers to produce multiple respective received signals. The spatially-multiplexed signal includes multiple simultaneously-transmitted symbols, which are selected from respective sets of constellation symbols, each constellation symbol representing a respective set of values of a group of data bits. Combinations of the constellation symbols are traversed iteratively. Each combination includes one constellation symbol from each of the sets of the constellation symbols and represents N data bits. The traversed combinations are searched for a combination that matches the received signals. During traversal of the combinations, at least 2N measures of likelihood regarding the values of the data bits represented by each traversed combination are accumulated. The accumulated measures of likelihood are processed to produce soft bit metrics. The values of the data bits carried by the multiple transmitted symbols are reconstructed responsively to the soft bit metrics.
摘要翻译：一种通信方法包括使用多个接收机接收空间复用信号以产生多个相应的接收信号。空间复用信号包括从相应组的星座符号中选择的多个同时发送的符号，每个星座符号表示一组数据比特的相应的一组值。星座符号的组合被迭代地遍历。每个组合包括来自星座符号集合中的每一组的一个星座符号，并且表示N个数据比特。搜索所遍历的组合以获得与接收到的信号相匹配的组合。在组合遍历期间，累积关于由每个遍历组合表示的数据位的值的至少2N次可能性测量。处理可能性的累积度量以产生软比特度量。响应于软比特度量重建由多个发送的符号携带的数据比特的值。

16. 发明授权

US07826568B2 Far-end crosstalk (FEXT) canceller 有权
标题翻译：远端串扰（FEXT）消除器
公开(公告)号：US07826568B2
公开(公告)日：2010-11-02
申请号：US11617845
申请日：2006-12-29
申请人： Naftali Sommer , Itay Lusky
发明人： Naftali Sommer , Itay Lusky
IPC分类号： H03D1/04 , H04J1/12
CPC分类号： H04B3/32 , H04B3/235 , H04M3/34 , H04M11/062
摘要： A novel and useful mechanism for the detection, estimation and correction of far-end cross talk (FEXT) caused by transmissions over adjacent wire pairs or cables. The detection, estimation and correction technique of the invention can be used to identify and compensate for FEXT impairments in Ethernet and DSL systems. The detection, estimation and correction is performed utilizing one of several techniques including linear forward filtering, backward decision feedback based filtering and a combination thereof. Results of simulations are presented illustrating the performance improvements provided by the present invention.
摘要翻译：一种用于通过相邻线对或电缆传输引起的远端串扰（FEXT）的检测，估计和校正的新颖有用的机制。本发明的检测，估计和校正技术可用于识别和补偿以太网和DSL系统中的FEXT损伤。使用包括线性正向滤波，基于反向判决反馈的滤波及其组合的几种技术之一来执行检测，估计和校正。进行模拟的结果示出了本发明提供的性能改进。

17. 发明授权

US07738567B2 Baseline wander correction for communication receivers 有权
标题翻译：通信接收机的基线漂移校正
公开(公告)号：US07738567B2
公开(公告)日：2010-06-15
申请号：US11617644
申请日：2006-12-28
申请人： Mor Miller , Ariel Yagil , Itay Lusky , Liran Brecher , Amir Peleg , Naftali Sommer
发明人： Mor Miller , Ariel Yagil , Itay Lusky , Liran Brecher , Amir Peleg , Naftali Sommer
IPC分类号： H04B3/04 , H04B3/20
CPC分类号： H04L25/063 , H04L25/0266
摘要： A novel and useful baseline wander correction mechanism for use with transformer coupled baseband communication receivers. Parametric estimation of the transformer model is used estimate and cancel the baseline wander effect. A parametric model is used to model the baseline wander impairment created by the transmitter and receiver transformers as a high pass filter having an exponential decay parameter alpha. A correction signal for both the far end and echo signal paths are calculated and summed to generate a total correction signal. The total correction signal is partitioned into an analog correction signal that is applied to the analog portion of the communications receiver and into a digital correction signal that is similarly applied to the analog portion of the communications receiver.
摘要翻译：一种用于变压器耦合基带通信接收机的新颖有用的基线漂移校正机制。使用变压器模型的参数估计估计并消除基线漂移效应。参数模型用于将由发射机和接收机变压器产生的基线漂移损伤建模为具有指数衰减参数α的高通滤波器。对远端和回波信号路径的校正信号进行计算并求和以产生总校正信号。总校正信号被分割成模拟校正信号，该信号被施加到通信接收机的模拟部分并且被类似地应用于通信接收机的模拟部分的数字校正信号。

18. 发明授权

US07492703B2 Noise analysis in a communication system 有权
标题翻译：通信系统中的噪声分析
公开(公告)号：US07492703B2
公开(公告)日：2009-02-17
申请号：US10273561
申请日：2002-10-18
申请人： Itay Lusky , Daniel Wajcer , Yosef Bendel , Yigal Bitran , Naftali Sommer , Ofir Shalvi , Zvi Reznic , Ariel Yagil , Ran Senderovitz , Eli Haim
发明人： Itay Lusky , Daniel Wajcer , Yosef Bendel , Yigal Bitran , Naftali Sommer , Ofir Shalvi , Zvi Reznic , Ariel Yagil , Ran Senderovitz , Eli Haim
IPC分类号： H04J11/00
CPC分类号： H04L1/20 , H04L1/0001 , H04L1/0003
摘要： A system is provided to automatically estimate performance of a receiver for receiving input signals, the input signals having a carrier frequency and a baud rate, from a channel in a communication system and the effect of highly correlated noise cancellation on performance of the receiver, while no active transmission is occurring on the channel, comprising: a digital front end in the receiver for receiving samples of the input signals; a predictor coupled to the digital front end for predicting highly correlated noise in a second sample of the input signal; and a subtraction unit coupled to the predictor for subtracting the predictor output from the second sample to determine residual noise in the second sample. Other systems and methods are disclosed.
摘要翻译：提供一种系统，用于自动估计用于从通信系统中的信道接收输入信号，输入信号具有载波频率和波特率的接收机的性能以及高度相关的噪声消除对接收机性能的影响，同时在频道上没有发生主动传输，包括：接收机中的数字前端，用于接收输入信号的采样; 耦合到所述数字前端的预测器，用于预测所述输入信号的第二样本中的高度相关噪声; 以及减法单元，耦合到所述预测器，用于从所述第二样本减去所述预测器输出，以确定所述第二样本中的残余噪声。公开了其它系统和方法。

19. 发明申请

US20080160915A1 FAR-END CROSSTALK (FEXT) CANCELLER 有权
标题翻译： FAR-END CROSSTALK（FEXT）CANCELLER
公开(公告)号：US20080160915A1
公开(公告)日：2008-07-03
申请号：US11617845
申请日：2006-12-29
申请人： Naftali Sommer , Itay Lusky
发明人： Naftali Sommer , Itay Lusky
IPC分类号： H04B15/00 , H04B1/00
CPC分类号： H04B3/32 , H04B3/235 , H04M3/34 , H04M11/062
摘要： A novel and useful mechanism for the detection, estimation and correction of far-end cross talk (FEXT) caused by transmissions over adjacent wire pairs or cables. The detection, estimation and correction technique of the invention can be used to identify and compensate for FEXT impairments in Ethernet and DSL systems. The detection, estimation and correction is performed utilizing one of several techniques including linear forward filtering, backward decision feedback based filtering and a combination thereof. Results of simulations are presented illustrating the performance improvements provided by the present invention
摘要翻译：一种用于通过相邻线对或电缆传输引起的远端串扰（FEXT）检测，估计和校正的新颖有用的机制。本发明的检测，估计和校正技术可用于识别和补偿以太网和DSL系统中的FEXT损伤。使用包括线性正向滤波，基于反向判决反馈的滤波及其组合的几种技术之一来执行检测，估计和校正。进行模拟的结果示出了本发明提供的性能改进

20. 发明授权

US07117427B2 Reduced complexity decoding for trellis coded modulation 有权
标题翻译：减少格式编码调制的复杂度解码
公开(公告)号：US07117427B2
公开(公告)日：2006-10-03
申请号：US10616073
申请日：2003-07-09
申请人： Lior Ophir , Itay Lusky
发明人： Lior Ophir , Itay Lusky
IPC分类号： H03M13/03
CPC分类号： H03M13/253 , H03M13/256 , H03M13/2936 , H03M13/3961 , H03M13/41 , H03M13/4169 , H03M13/6502 , H03M13/6569
摘要： The present application describes a method of implementing a Viterbi algorithm (VA) for trellis coded modulation (TCM) decoding in communication equipment. According to an embodiment, a branch metric is calculated by adding the absolute value of the real and imaginary parts of a complex vector resulting from the subtraction of a received symbol and a constellation point that is the closest to the symbol in each subset.
摘要翻译：本申请描述了在通信设备中实现用于网格编码调制（TCM）解码的维特比算法（VA）的方法。根据实施例，通过将由接收到的符号的减法产生的复数向量的实数和虚部的绝对值与在每个子集中与该符号最接近的星座点相加来计算分支度量。

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