公开(公告)号：US06879639B1

公开(公告)日：2005-04-12

申请号：US09637797

申请日：2000-08-11

Applicant: Rami Verbin ,  Ilan Reuven ,  Ayelet Shahar-Doron

Inventor： Rami Verbin ,  Ilan Reuven ,  Ayelet Shahar-Doron

IPC: H04L25/03 ,  H04L25/497 ,  H04L1/00

CPC classification number: H04L25/03343 ,  H04L25/497

Abstract: A method for conveying digital data from a transmitter to a receiver includes specifying a spectral filtering profile to be applied in conveying the data. A sequence of input symbols is generated at the transmitter, corresponding to the data to be conveyed. The input symbols are precoded at the transmitter using Tomlinson-Harashima preceding responsive to the specified profile, so as to generate a corresponding sequence of precoded symbols. The precoded symbols are filtered in accordance with the specified profile. The precoded and filtered symbols are decoded at the receiver so as to recover the data therefrom.

Abstract translation: 用于将数字数据从发射机传送到接收机的方法包括指定在传送数据时应用的频谱滤波轮廓。 在发送器处生成输入符号序列，对应于要传送的数据。 输入符号在发射机使用Tomlinson-Harashima进行预编码，响应于指定的配置文件，以便生成相应的预编码符号序列。 预编码符号根据指定的配置文件进行过滤。 预编码和滤波的符号在接收机处被解码，以便从中恢复数据。

公开(公告)号：US06411657B1

公开(公告)日：2002-06-25

申请号：US09476747

申请日：1999-12-30

Applicant: Rami Verbin ,  Ilan Reuven ,  David Baum

Inventor： Rami Verbin ,  Ilan Reuven ,  David Baum

IPC: H04L100

CPC classification number: H04L25/497 ,  H04L25/03343

Abstract: A high-speed transmitter, which generates an output signal stream having a specified spectral profile. The transmitter includes a Tomlinson-Harashima precoder, which is adapted to receive a sequence of input symbols having a given input constellation and to generate, responsive to the specified spectral profile, a corresponding sequence of precoded symbols. A transmit digital filter is adapted to apply a transmit filter response, in accordance with the specified spectral profile, to the precoded symbols so as to generate a corresponding sequence of output symbols, having a given output constellation, to be transmitted in the output stream.

Abstract translation: 一种高速发射器，其产生具有指定光谱分布的输出信号流。 发射机包括Tomlinson-Harashima预编码器，其适于接收具有给定输入星座图的输入符号序列，并响应于指定的频谱分布生成相应的预编码符号序列。 传输数字滤波器适于根据指定的频谱分布将预定编码的符号应用发射滤波器响应，以便生成具有给定输出星座的输出符号的相应序列，以在输出流中传输。

公开(公告)号：US06751255B1

公开(公告)日：2004-06-15

申请号：US09521495

申请日：2000-03-09

Applicant: Ilan Reuven ,  Ayelet Shahar Doron

Inventor： Ilan Reuven ,  Ayelet Shahar Doron

IPC: H03H730

CPC classification number: H04L25/4975 ,  H03H21/0012 ,  H04L25/03057 ,  H04L25/03343 ,  H04L2025/0349 ,  H04L2025/03503 ,  H04L2025/03617

Abstract: A digital data receiver, for receiving a signal that is transmitted over a channel having a channel response and is filtered with a predetermined filter response. The receiver includes a decision device, coupled to receive a sequence of equalized samples and to generate, responsive thereto, a corresponding sequence of estimated symbols. A feed-forward equalizer receives a sequence of input samples of the signal and generates responsive to the input samples, forward-equalized samples. A decision feedback equalizer (DFE), which receives the sequence of estimated symbols, includes an adaptive element, which processes the estimated symbols responsive to the channel response, and a fixed element, which processes the estimated symbols responsive to the predetermined filter response. The DFE generates feedback-equalized samples by combined operation of the adaptive and fixed elements. An adder combines the forward-equalized samples with the feedback-equalized samples so as to provide the equalized samples to the decision device.

Abstract translation: 一种数字数据接收机，用于接收通过具有信道响应的信道发送并以预定的滤波器响应进行滤波的信号。 接收机包括一个决定设备，它被耦合以接收一系列均衡样本，并响应于此产生相应的估计符号序列。 前馈均衡器接收信号的输入采样序列，并响应于输入采样产生前向均衡采样。 接收估计符号序列的判决反馈均衡器（DFE）包括响应于信道响应处理估计符号的自适应元件，以及响应于预定滤波器响应来处理估计符号的固定元件。 DFE通过自适应和固定元素的组合操作产生反馈均衡的样本。 加法器将前向均衡样本与反馈均衡样本组合，以便将均衡的样本提供给决策装置。

公开(公告)号：US06788750B1

公开(公告)日：2004-09-07

申请号：US09668177

申请日：2000-09-22

Applicant: Ilan Reuven ,  Ayelet Shahar-Doron ,  Liron Frenkel ,  Gilad Ayalon

Inventor： Ilan Reuven ,  Ayelet Shahar-Doron ,  Liron Frenkel ,  Gilad Ayalon

IPC: H04L2706

CPC classification number: H04L1/006 ,  H03M13/256 ,  H03M13/3955 ,  H03M13/3961 ,  H03M13/41 ,  H03M13/4169 ,  H03M13/6502 ,  H03M13/6505 ,  H04L1/0054 ,  H04L27/3416

Abstract: A method for decoding a sequence of symbols encoded by an encoding system with a plurality of possible states and transmitted over a channel, wherein the encoding system output can be represented by a trellis diagram. The method includes receiving a signal corresponding to the sequence of symbols transmitted over the channel and responsive to the signal, finding respective old state metrics for one or more of the possible states of the encoding system that correspond to a given symbol in the sequence. Respective transition metrics are determined for state transitions that link the one or more possible states for which the old state metrics were found to at least some of the possible states of the encoding system that correspond to a succeeding one of the symbols in the sequence. New state metrics are computed for the at least some of the possible states that correspond to the succeeding symbol, responsive to the respective old state metrics and to the transition metrics, such that when two or more of the transitions are linked to the same one of the possible states of the succeeding symbol, one of the transitions is chosen based on a criterion applied to the new state metrics. A subset of the at least some of the possible states that correspond to the succeeding symbol is selected based on the new state metrics and used in decoding the sequence of symbols.

Abstract translation: 一种用于对由具有多个可能状态编码并通过信道传输的编码系统编码的符号序列进行解码的方法，其中编码系统输出可以由格状图表示。 该方法包括：接收对应于通过信道发送的符号序列的信号，并且响应于该信号，找出与序列中的给定符号相对应的编码系统的一个或多个可能状态的相应的旧状态度量。 针对状态转换确定相应的转移度量，该状态转换将发现旧状态度量的一个或多个可能状态链接到与序列中的后续符号之一相对应的编码系统的至少一些可能状态。 响应于相应的旧状态度量和转换度量，针对对应于后续符号的至少一些可能状态来计算新状态度量，使得当两个或更多个转换链接到 基于适用于新状态度量的准则来选择后续符号的可能状态，其中一个转换被选择。 基于新的状态度量来选择对应于后续符号的至少一些可能状态的子集，并用于解码符号序列。

公开(公告)号：US06587512B1

公开(公告)日：2003-07-01

申请号：US09248632

申请日：1999-02-11

Applicant: Ilan Reuven ,  Liron Frenkel

Inventor： Ilan Reuven ,  Liron Frenkel

IPC: H04L100

CPC classification number: H04L25/4975 ,  H04L25/03343 ,  H04L27/3411

Abstract: A method for transmitting a succession of input data samples over a channel having a given channel response includes generating a set of candidate signal point sequences responsive to the input data samples, such that the input data samples are recoverable from a final signal derived from the candidate sequences. The succession of input data samples is mapped into a succession of interim signal point sequences, selected from among the candidate signal point sequences according to a signal shaping criterion. The interim signal point sequences are precoded according to the given channel response and further according to a whitening transformation. The precoded sequences are filtered in accordance with the whitening transformation, thus generating the final signal to be transmitted over the channel to a receiver.

Abstract translation: 一种用于通过具有给定信道响应的信道发送一系列输入数据样本的方法包括：响应于输入数据样本产生一组候选信号点序列，使得输入数据样本可从候选者得到的最终信号中恢复 序列。 根据信号整形标准将输入数据样本的连续映射到从候选信号点序列中选出的一系列临时信号点序列。 根据给定的信道响应，进一步根据白化变换对临时信号点序列进行预编码。 根据白化变换对预编码序列进行滤波，从而产生要通过信道传输到接收机的最终信号。

公开(公告)号：US6081502A

公开(公告)日：2000-06-27

申请号：US932927

申请日：1997-09-18

Applicant: Eric Paneth ,  Ilan Reuven

Inventor： Eric Paneth ,  Ilan Reuven

IPC: H04L27/26 ,  H04J11/08 ,  H04J3/12

CPC classification number: H04L27/2615

Abstract: A method for reducing probability of clipping in an IFFT-based (inverse fast Fourier transform based) multitone communication transmitter, the method including applying an IFFT to an original sequence thereby to generate an IFFT output sequence, if the IFFT output sequence fits a predetermined clipping profile, applying at least one transformation to the IFFT output sequence, thereby to define a transmitted sequence, the transformation-applying step including decomposing the IFFT output sequence into a first component sequence and a second component sequence, rearranging at least one of the first and second component sequences with respect to the other, thereby to define third and fourth component sequences, and combining the third and fourth component sequences into a final output sequence.

Abstract translation: 一种用于降低基于IFFT（基于快速傅里叶逆变换）多媒体通信发射机中的限幅概率的方法，该方法包括：如果IFFT输出序列适合预定的剪辑，则将IFFT应用于原始序列从而产生IFFT输出序列 对IFFT输出序列施加至少一个变换，由此定义发送的序列，所述变换应用步骤包括将IFFT输出序列分解成第一分量序列和第二分量序列，重新排列第一和第二分量序列中的至少一个， 从而定义第三和第四分量序列，并将第三和第四分量序列组合成最终的输出序列。

公开(公告)号：US06721373B1

公开(公告)日：2004-04-13

申请号：US09538572

申请日：2000-03-29

Applicant: Liron Frenkel ,  Ilan Reuven

Inventor： Liron Frenkel ,  Ilan Reuven

IPC: H03D104

CPC classification number: H04L1/0045 ,  H04L1/0071 ,  H04L27/2647

Abstract: Impulsive noise is detected for each discrete multi-tone (DMT) symbol. If impulsive noise is detected, all bytes, which belong to the associated DMT symbol are tagged by “erasure bits”. After interleaving, Reed-Solomon decoding is initially performed without erasures. If the decoding fails, it is performed again, this time with erasures. Reed-Solomon decoders report failure with relatively high certainty, and thus, if the first stage (decoding without erasures) includes failure or errors due to impulsive noise, the second stage of decoding is performed again with erasures.

Abstract translation: 针对每个离散多音（DMT）符号检测脉冲噪声。 如果检测到脉冲噪声，则属于相关联的DMT符号的所有字节都被“擦除位”标记。 在交织之后，最初执行Reed-Solomon解码而不进行擦除。 如果解码失败，则再次执行，这次用擦除。 Reed-Solomon解码器以较高的确定性报告故障，因此，如果第一级（无擦除的解码）包括由于脉冲噪声引起的故障或错误，则第二级的解码将再次执行擦除。

公开(公告)号：US06452978B1

公开(公告)日：2002-09-17

申请号：US09248633

申请日：1999-02-11

Applicant: Ilan Reuven ,  Liron Frenkel

Inventor： Ilan Reuven ,  Liron Frenkel

IPC: H04L512

CPC classification number: H04L27/3411

Abstract: A method is described for mapping digital input data, including a sequence of input samples, into an interim signal point sequence, for use in conjunction with a single carrier modulation transmitter. The method includes generating a set of candidate signal point sequences, for each input sample, selecting an interim signal point sequence, into which to map the sequence of input samples, from among the set of candidate signal point sequences, so as to obtain a low peak power value of a final signal generated from the interim signal point sequence, and using a single carrier modulation transmitter to transmit the final signal to a receiver.

Abstract translation: 描述了一种用于将包括输入样本序列的数字输入数据映射到临时信号点序列中以与单载波调制发射机结合使用的方法。 该方法包括为每个输入样本产生一组候选信号点序列，从候选信号点序列组中选择一个临时信号点序列，映射输入采样序列，以获得低的 从中间信号点序列生成的最终信号的峰值功率值，以及使用单载波调制发射机将最终信号发射到接收机。

公开(公告)号：US07720169B2

公开(公告)日：2010-05-18

申请号：US11746806

申请日：2007-05-10

Applicant: Ilan Reuven ,  Assaf Ben-Yishai

Inventor： Ilan Reuven ,  Assaf Ben-Yishai

IPC: H04B7/02 ,  H04L1/02

CPC classification number: H04L25/03318

Abstract: A novel and useful apparatus for and method of multiple input multiple output (MIMO) detection for use in MIMO based communication systems. The mechanism of the invention performs a simplified tree search utilizing a single stage expansion of the most likely first symbol candidates, in the case of a 2×2 MIMO system. The invention also provides a refinement mechanism operative to significantly improve the soft information (i.e. log likelihood ratio) of the list of candidates. To improve the soft information, the mechanism applies one or more refinement rounds to generate additional candidates for both first and second detected symbols.

Abstract translation: 一种用于MIMO输入多输出（MIMO）检测的新颖有用的装置和方法，用于基于MIMO的通信系统。 在2×2 MIMO系统的情况下，本发明的机制使用最可能的第一符号候选的单级扩展来执行简化树搜索。 本发明还提供了一种可以显着改善候选列表的软信息（即对数似然比）的改进机制。 为了改进软信息，该机制应用一个或多个细化轮来为第一和第二检测符号生成另外的候选。

公开(公告)号：US20080279299A1

公开(公告)日：2008-11-13

申请号：US11746806

申请日：2007-05-10

Applicant: Ilan Reuven ,  Assaf Ben-Yishai

Inventor： Ilan Reuven ,  Assaf Ben-Yishai

IPC: H04L1/02

CPC classification number: H04L25/03318

Abstract: A novel and useful apparatus for and method of multiple input multiple output (MIMO) detection for use in MIMO based communication systems. The mechanism of the invention performs a simplified tree search utilizing a single stage expansion of the most likely first symbol candidates, in the case of a 2×2 MIMO system. The invention also provides a refinement mechanism that is operative to significantly improve the soft information (i.e. log likelihood ratio) of the list of candidates. To improve the soft information, the mechanism applies one or more refinements rounds to generate additional candidates for both first and second detected symbols.

Abstract translation: 一种用于MIMO输入多输出（MIMO）检测的新颖有用的装置和方法，用于基于MIMO的通信系统。 在2x2 MIMO系统的情况下，本发明的机制使用最可能的第一符号候选者的单级扩展来执行简化树搜索。 本发明还提供了一种改进机制，其可操作以显着改善候选列表的软信息（即对数似然比）。 为了改进软信息，该机制应用一个或多个细化轮来为第一和第二检测符号生成另外的候选。