公开(公告)号：US09070453B2

公开(公告)日：2015-06-30

申请号：US13086408

申请日：2011-04-14

申请人： Eran Sharon ,  Idan Alrod ,  Simon Litsyn ,  Ishai Ilani

发明人： Eran Sharon ,  Idan Alrod ,  Simon Litsyn ,  Ishai Ilani

IPC分类号： G06F12/02 ,  G11C16/10 ,  G11C11/56 ,  G11C16/34

CPC分类号： G11C16/102 ,  G06F12/02 ,  G11C11/5628 ,  G11C16/349

摘要： To store, successively, in a plurality of memory cells, first and second pluralities of input bits that are equal in number, a first transformation transforms the first input bits into a first plurality of transformed bits. A first portion of the cells is programmed to store the first transformed bits according to a mapping of bit sequences to cell levels, but, if the first transformation has a variable output length, only if there are few enough first transformed bits to fit in the first cell portion. Then, without erasing a second cell portion that includes the first portion, if respective levels of the cells of the second portion, that represent a second plurality of transformed bits obtained by a second transformation of the second input bits, according to the mapping, are accessible from the current cell levels, the second portion is so programmed to store the second transformed bits.

摘要翻译： 为了顺次地在多个存储单元中存储数量相等的第一和第二多个输入位，第一变换将第一输入位变换为第一多个变换位。 单元的第一部分被编程为根据位序列到单元级别的映射来存储第一变换的位，但是如果第一变换具有可变的输出长度，则只有当足够少的第一变换位适合于 第一细胞部分。 然后，在不擦除包括第一部分的第二单元部分的情况下，如果根据映射，表示通过第二输入位的第二变换获得的第二多个变换位的第二部分的单元的各个级别是 从当前单元级可访问，第二部分被编程为存储第二转换位。

公开(公告)号：US20110258370A1

公开(公告)日：2011-10-20

申请号：US13086408

申请日：2011-04-14

申请人： Eran SHARON ,  Idan Alrod ,  Simon Litsyn ,  Ishai Ilani

发明人： Eran SHARON ,  Idan Alrod ,  Simon Litsyn ,  Ishai Ilani

IPC分类号： G06F12/02

CPC分类号： G11C16/102 ,  G06F12/02 ,  G11C11/5628 ,  G11C16/349

摘要： To store, successively, in a plurality of memory cells, first and second pluralities of input bits that are equal in number, a first transformation transforms the first input bits into a first plurality of transformed bits. A first portion of the cells is programmed to store the first transformed bits according to a mapping of bit sequences to cell levels, but, if the first transformation has a variable output length, only if there are few enough first transformed bits to fit in the first cell portion. Then, without erasing a second cell portion that includes the first portion, if respective levels of the cells of the second portion, that represent a second plurality of transformed bits obtained by a second transformation of the second input bits, according to the mapping, are accessible from the current cell levels, the second portion is so programmed to store the second transformed bits.

摘要翻译： 为了顺次地在多个存储单元中存储数量相等的第一和第二多个输入位，第一变换将第一输入位变换为第一多个变换位。 单元的第一部分被编程为根据位序列到单元级别的映射来存储第一变换的位，但是如果第一变换具有可变的输出长度，则只有当足够少的第一变换位适合于 第一细胞部分。 然后，在不擦除包括第一部分的第二单元部分的情况下，如果根据映射通过第二输入位的第二变换获得的表示第二多个变换位的第二部分的单元的各个级别是 从当前单元级可访问，第二部分被编程为存储第二转换位。

公开(公告)号：US08233376B2

公开(公告)日：2012-07-31

申请号：US12065531

申请日：2006-09-05

申请人： Ishai Ilani

发明人： Ishai Ilani

IPC分类号： H04J1/12

CPC分类号： H04L25/03343 ,  H04L5/0007 ,  H04L5/0046 ,  H04L25/0204 ,  H04L25/03159 ,  H04L2025/03414

摘要： A method, system and device for use in conjunction with Digital Subscriber Line (DSL) transmission systems, including Far-End Crosstalk (FEXT) cancellation circuitry. According to embodiments of the invention there is provided a system including a central office having a plurality of central modems, and at least one remote modem in communication with the plurality of central modems, the remote modem capable of automatic channel adjustment, and further capable of providing to the central office a channel adjustment parameter, wherein the central office includes a precoder to selectively precode symbols prior to transmission by each of the central modems with an estimation precoding matrix, and a controller to receive from the at least one remote modem respective channel adjustment parameters in response to transmitted symbols precoded with said estimation precoding matrix.

摘要翻译： 一种与数字用户线（DSL）传输系统结合使用的方法，系统和设备，包括远端串扰（FEXT）消除电路。 根据本发明的实施例，提供了一种系统，其包括具有多个中央调制解调器的中心局和与多个中央调制解调器通信的至少一个远程调制解调器，该远程调制解调器能够进行自动信道调整，并且还能够 向所述中央局提供频道调整参数，其中所述中心局包括预编码器，用于在每个所述中央调制解调器利用估计预编码矩阵选择性地对码元进行预编码，以及控制器，用于从所述至少一个远程调制解调器相应的频道 响应于利用所述估计预编码矩阵预编码的发射符号的调整参数。

公开(公告)号：US07133441B1

公开(公告)日：2006-11-07

申请号：US09510550

申请日：2000-02-22

申请人： Tuvia Barlev ,  Arkady Molev Shtayman ,  Amir Kanchuk ,  Gilad Rozen ,  Ishai Ilani ,  Ofer Sharon ,  Robert Shilton

发明人： Tuvia Barlev ,  Arkady Molev Shtayman ,  Amir Kanchuk ,  Gilad Rozen ,  Ishai Ilani ,  Ofer Sharon ,  Robert Shilton

IPC分类号： H04B1/38 ,  H04J3/04 ,  H04J3/22

CPC分类号： H04L25/08 ,  H04L5/023 ,  H04L12/2856 ,  H04L12/2872 ,  H04L25/14 ,  H04L27/2602 ,  H04M11/062

摘要： A system for transporting a high speed data stream over a plurality of relatively low bandwidth unshielded twisted copper pairs within the local loop plant or in any environment having a plurality of copper lines, such as on campuses, within large buildings, etc. The copper twisted pairs are transformed from a plurality of low bandwidth, low reliability links into a high reliability, very high bandwidth long range communication channel utilizing optimized xDSL transmission technologies over the plurality of copper pairs. A transmit data processor perform scrambling, FEC encoding and interleaving on the data before it is divided and dispatched to the plurality of modem elements for transmission over the local loop plant, either bidirectionally or unidirectionally. On the receiving side, the individual data streams are collected, aggregated and a receive data processor performs de-interleaving, FEC decoding and de-interleaving, resulting in the high speed data stream originally transmitted. The system also includes means for increasing the performance of the xDSL modem elements including crosstalk cancellation, power and PSD control, data rate control and optimal routing of the transmitted signals within the twisted pair binders. Network elements located remotely on the other side of the plurality of copper pairs are provided electrical power. In addition, the system optionally multiplexes a plurality of low bandwidth telephony services over the high speed link using either TDM or FDM techniques.

摘要翻译： 用于在本地回路工厂内或在具有多个铜线的任何环境中的多个相对低带宽的非屏蔽双绞铜线上传送高速数据流的系统，例如在大型建筑物内的校园等。铜绞合 通过在多个铜对上利用优化的xDSL传输技术，从多个低带宽，低可靠性链路转换成高可靠性，非常高带宽的长程通信信道。 发送数据处理器在将数据分割并分派到多个调制解调器元件之前对数据进行加扰，FEC编码和交织，以便通过本地回路工厂双向或单向传输。 在接收侧，各个数据流被收集，聚合，并且接收数据处理器执行解交织，FEC解码和解交织，导致最初发送的高速数据流。 该系统还包括用于增加xDSL调制解调器元件的性能的装置，包括串扰消除，功率和PSD控制，数据速率控制和双绞线绑定器内发射信号的最佳路由。 位于多个铜对的另一侧的远程网络元件被提供电力。 此外，该系统可选地使用TDM或FDM技术通过高速链路复用多个低带宽电话业务。

公开(公告)号：US20100278033A1

公开(公告)日：2010-11-04

申请号：US12065531

申请日：2006-09-05

申请人： Ishai Ilani

发明人： Ishai Ilani

IPC分类号： H04J3/10

CPC分类号： H04L25/03343 ,  H04L5/0007 ,  H04L5/0046 ,  H04L25/0204 ,  H04L25/03159 ,  H04L2025/03414

摘要： A method, system and device for use in conjunction with Digital Subscriber Line (DSL) transmission systems, including Far-End Crosstalk (FEXT) cancellation circuitry. According to embodiments of the invention there is provided a system including a central office having a plurality of central modems, and at least one remote modem in communication with the plurality of central modems, the remote modem capable of automatic channel adjustment, and further capable of providing to the central office a channel adjustment parameter, wherein the central office includes a precoder to selectively precode symbols prior to transmission by each of the central modems with an estimation precoding matrix, and a controller to receive from the at least one remote modem respective channel adjustment parameters in response to transmitted symbols precoded with said estimation precoding matrix.

摘要翻译： 一种与数字用户线（DSL）传输系统结合使用的方法，系统和设备，包括远端串扰（FEXT）消除电路。 根据本发明的实施例，提供了一种系统，其包括具有多个中央调制解调器的中心局和与多个中央调制解调器通信的至少一个远程调制解调器，该远程调制解调器能够进行自动信道调整，并且还能够 向所述中心局提供频道调整参数，其中所述中心局包括预编码器，用于在由所述中央调制解调器的每个中央调制解调器利用估计预编码矩阵选择性地对码元进行预编码，以及控制器，用于从所述至少一个远程调制解调器相应的频道 响应于利用所述估计预编码矩阵预编码的发射符号的调整参数。

公开(公告)号：US20050251723A1

公开(公告)日：2005-11-10

申请号：US10513406

申请日：2003-05-06

申请人： Ishai Ilani

发明人： Ishai Ilani

IPC分类号： H03M13/00 ,  H03M13/03 ,  H03M13/15 ,  H04L1/00

CPC分类号： H04L1/0068 ,  H03M13/03 ,  H03M13/1515 ,  H03M13/155 ,  H03M13/6362 ,  H04L1/0057 ,  H04L1/0083

摘要： A forward error correction method including inserting at least one filler symbol into an input data stream at a pre-determined position, thereby generating a precoded symbol group, FEC encoding the precoded symbol group, thereby generating a code word, removing at least one of the filler symbols from the code word, thereby generating an optimized code word, inserting at least one filler symbol into the optimized code word at the predetermined position, thereby generating a deoptimized code word, FEC decoding the deoptimized code word, thereby generating a decoded symbol group, and removing at least one of the filler symbols from the decoded symbol group, thereby generating an output data stream.

摘要翻译： 一种前向纠错方法，包括将至少一个填充符号插入到预定位置的输入数据流中，从而生成预编码符号组，对编码符号组进行FEC编码，从而生成代码字， 从而生成优化的代码字，将至少一个填充符号插入到预定位置处的优化代码字中，从而生成去优化的代码字，对解优化的代码字进行FEC解码，从而生成解码的符号组 并且从解码的符号组中去除填充符号中的至少一个，从而生成输出数据流。

公开(公告)号：US06697985B1

公开(公告)日：2004-02-24

申请号：US09677671

申请日：2000-10-04

申请人： Ishai Ilani

发明人： Ishai Ilani

IPC分类号： H03M1300

CPC分类号： H04L1/0057 ,  H03M13/151 ,  H03M13/1515 ,  H03M13/253 ,  H03M13/256 ,  H03M13/2906 ,  H03M13/293 ,  H03M13/2936 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/0071

摘要： A forward error correction system including a coder operative to encode a data stream into at least one primary code word and at least one secondary code word, where each primary code word is encoded at a first code rate, and each secondary code word is encoded at a second code rate that is greater than the first code rate, at least one transmitting modem for transmitting the code words, at least one receiving modem for receiving the code words, a decoder operative to detect errors in any of the code words, correct any of the errors and erasures in the code words, and communicate the positions of any of the errors, and a controller operative to receive the communication of the error positions, predict from any of the errors in the primary code word at least one error in the secondary code word, and report any of the predicted errors as erasure positions to the decoder.

摘要翻译： 一种前向纠错系统，包括编码器，用于将数据流编码成至少一个主码字和至少一个次码字，其中每个主码字以第一码率被编码，并且每个次码字被编码在 至少一个用于发送码字的发送调制解调器，用于接收码字的至少一个接收调制解调器，用于检测任何码字中的错误的解码器，校正任何 的代码字中的错误和擦除，并且传达任何错误的位置，以及可操作以接收错误位置的通信的控制器，从主代码字中的任何错误中预测至少一个错误 次代码字，并将任何预测误差作为擦除位置报告给解码器。

公开(公告)号：US07606315B2

公开(公告)日：2009-10-20

申请号：US10591695

申请日：2005-03-23

申请人： Ishai Ilani ,  Ram Zamir

发明人： Ishai Ilani ,  Ram Zamir

IPC分类号： H04L27/00

CPC分类号： H04B3/487

摘要： In a communication medium including a first set A of n communication channels and a second set U of m communication channels, a method for selecting sensor channels in A for quantifying crosstalk from U, including operating A in a receive-only mode (FIG. 2 Step of Initialize Modem pool A. Work in receive-only mode.), choosing a subset S1 of A, estimating the expansion coefficients of A as a predefined function of subset S1 and signals received by A (FIG. 2 Step of Choose a set S1 of m modems in A and estimate the expansion coefficients gjj of modems in A relative to S1), choosing a candidate subset S2 of size m of A where the determinant of a matrix of the expansion coefficients corresponding to the subset S2 is greater than that of the expansion coefficients corresponding to any other subset of size m of A divided by a predefined bound D (FIG. 2 Step of Choose an initial candidate subset S2 where det (AS2) det (AS)/D), calculating a threshold alpha, choosing a final subset S2 that is an -amplifier of (FIG. 2Step of Test S2 until a final subset S2 is found which is an -amplifier for a defined), and employing the communications channels in the final subset S2 as sensor channels (FIG. 2 Step of Use the modems corresponding to the final subset S2 as the sensor set for the remaining modems m-n in A) for quantifying crosstalk from U.

摘要翻译： 在包括n个通信信道的第一组A和m个通信信道的第二组U的通信介质中，选择用于量化来自U的串扰的传感器信道的方法，包括仅接收模式的操作A（图2 初始化调制解调器池的步骤A.以接收方式工作），选择A的子集S1，估计A的扩展系数作为子集S1的预定义函数和由A接收的信号（图2选择集合的步骤 A中的m个调制解调器的S1，并且相对于S1估计A中调制解调器的扩展系数gjj），选择A的大小为m的候选子集​​S2，其中与子集S2对应的扩展系数的矩阵的行列式大于 对应于A的尺寸m的任何其他子集除以预定界限D的扩展系数（图2选择初始候选子集S2的det（AS2）det（AS）/ D）的步骤，计算阈值α， 选择最终的子集S2 （图1）的放大器。 2测试S2步骤，直到找到最终子集S2，其为定义的一个放大器），并且将最终子集S2中的通信信道用作传感器信道（图2使用与最终子集S2对应的调制解调器的步骤为 用于量化来自U的串扰的用于A中的剩余调制解调器mn的传感器

公开(公告)号：US07509563B2

公开(公告)日：2009-03-24

申请号：US10513406

申请日：2003-05-06

申请人： Ishai Ilani

发明人： Ishai Ilani

IPC分类号： H03M13/00

CPC分类号： H04L1/0068 ,  H03M13/03 ,  H03M13/1515 ,  H03M13/155 ,  H03M13/6362 ,  H04L1/0057 ,  H04L1/0083

摘要： A forward error correction method including inserting at least one filler symbol into an input data stream at a pre-determined position, thereby generating a precoded symbol group, FEC encoding the precoded symbol group, thereby generating a code word, removing at least one of the filler symbols from the code word, thereby generating an optimized code word, inserting at least one filler symbol into the optimized code word at the predetermined position, thereby generating a deoptimized code word, FEC decoding the deoptimized code word, thereby generating a decoded symbol group, and removing at least one of the filler symbols from the decoded symbol group, thereby generating an output data stream.

摘要翻译： 一种前向纠错方法，包括将至少一个填充符号插入到预定位置的输入数据流中，从而生成预编码符号组，对编码符号组进行FEC编码，从而生成代码字， 从而生成优化的代码字，将至少一个填充符号插入到预定位置处的优化代码字中，从而生成去优化的代码字，对解优化的代码字进行FEC解码，从而生成解码的符号组 并且从解码的符号组中去除填充符号中的至少一个，从而生成输出数据流。

公开(公告)号：US20080214118A1

公开(公告)日：2008-09-04

申请号：US10591695

申请日：2005-03-23

申请人： Ishai Ilani ,  Ram Zamir

发明人： Ishai Ilani ,  Ram Zamir

IPC分类号： H04B17/00

CPC分类号： H04B3/487

摘要： In a communication medium including a first set A of n communication channels and a second set U of m communication channels, a method for selecting sensor channels in A for quantifying crosstalk from U, including operating A in a receive-only mode (FIG. 2 Step of Initialize Modem pool A. Work in receive-only mode.), choosing a subset S1 of A, estimating the expansion coefficients of A as a predefined function of subset S1 and signals received by A (FIG. 2 Step of Choose a set S1 of m modems in A and estimate the expansion coefficients gij of modems in A relative to S1), choosing a candidate subset S2 of size m of A where the determinant of a matrix of the expansion coefficients corresponding to the subset S2 is greater than that of the expansion coefficients corresponding to any other subset of size m of A divided by a predefined bound D (FIG. 2 Step of Choose an initial candidate subset S2 where det (AS2) det (AS)/D), calculating a threshold alpha, choosing a final subset S2 that is an -amplifier of (FIG. 2 Step of Test S2 until a final subset S2 is found which is an -amplifier for a defined), and employing the communications channels in the final subset S2 as sensor channels (FIG. 2 Step of Use the modems corresponding to the final subset S2 as the sensor set for the remaining modems m-n in A) for quantifying crosstalk from U.

摘要翻译： 在包括n个通信信道的第一组A和m个通信信道的第二组U的通信介质中，选择用于量化来自U的串扰的传感器信道的方法，包括仅接收模式的操作A（图2 初始化调制解调器池的步骤A.以接收方式工作），选择A的子集S 1，估计A的扩展系数为 子集S 1的预定义功能和由A（图2的选择一个集合S 1）的A（ A中的调制解调器，并且相对于S 1估计A中的调制解调器的扩展系数g ij ij，选择A的大小m的候选子集​​S 2，其中行列式 与子集S 2 2对应的扩展系数的矩阵大于对应于A的大小m的任何其他子集除以预定界限D（步骤选择初始候选子集S 2，其中det（A S2 S2）det（A S S S / D）/ D），计算阈值α，选择 作为测试S2的步骤的放大器的最终子集S 2 2，直到找到最终子集S 2为止的子集S 2， 用于定义的）放大器，以及将最终子集S 2中的通信信道用作传感器信道（图2的步骤）使用对应于 作为用于量化来自U的串扰的用于A中的剩余调制解调器mn的传感器集合的最终子集S 2