专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US6088390A Integrating decision feedback equalization and forward error correction to improve performance in point-to-multipoint digital transmission 失效
标题翻译：集成判决反馈均衡和前向纠错，以提高点对多点数字传输的性能
公开(公告)号：US6088390A
公开(公告)日：2000-07-11
申请号：US898166
申请日：1997-07-22
申请人： Mark Russell , Vladimir Friedman , Stuart D. Sandberg
发明人： Mark Russell , Vladimir Friedman , Stuart D. Sandberg
IPC分类号： H04L1/00 , H04L25/03 , H03H7/30 , H03H7/40
CPC分类号： H04L1/0071 , H04L25/03146 , H04L1/0057 , H04L2001/0093 , H04L2025/0349 , H04L2025/0377 , H04L2025/03796
摘要： A method and system which combines a properly designed FEC and the periodic transmission of known symbols to obtain a desired error performance in a point-to-multipoint digital transmission system employing a DFE which induces error propagation. A transmitter unit includes a forward error correction encoder (FEC) which implements a code to information provided to an input of a data interleaver having block length N and interleaving depth D, and a data modulator which is coupled to an output of the data interleaver to receive a stream of data symbols. At least one receiver unit includes a decision feedback equalizer (DFE) which includes a feedback filter and provides an input to a data deinterleaver having block length N and interleaving depth D, and a FEC decoder which receives data from an output of the data deinterleaver. Sequences of known symbols of length at least equal to the length of the feedback filter are periodically added to the output of the data interleaver. The receiver unit uses knowledge of the sequence to pass correct data to the feedback filter. The number of data symbols between the periodic sequences is made equal to an integer multiple k of the interleaving Depth D, thus limiting error propagation to cause no more than k errors per codeward of block length N. The FEC code serves to correct the k errors per error propagation event.
摘要翻译：一种组合适当设计的FEC和已知符号的周期性传输的方法和系统，以在采用引起误差传播的DFE的点对多点数字传输系统中获得期望的误差性能。发射机单元包括前向纠错编码器（FEC），其向提供给具有块长度N和交织深度D的数据交织器的输入的信号实现代码，以及数据调制器，其耦合到数据交织器的输出到接收数据符号流。至少一个接收器单元包括判决反馈均衡器（DFE），其包括反馈滤波器并向具有块长度N和交织深度D的数据解交织器提供输入，以及从数据解交织器的输出接收数据的FEC解码器。至少等于反馈滤波器的长度的已知符号长度的序列被周期性地添加到数据交织器的输出。接收器单元使用序列的知识将正确的数据传送到反馈滤波器。使周期序列之间的数据符号数等于交织深度D的整数倍k，从而限制误差传播，从而造成块长度N的每个码字不超过k个错误。FEC码用于校正k个误差每个错误传播事件。

2. 发明授权

US5983388A Forward error correction arrangement (FEC) for multipoint to single point communication systems 失效
标题翻译：用于多点到单点通信系统的前向纠错装置（FEC）
公开(公告)号：US5983388A
公开(公告)日：1999-11-09
申请号：US917664
申请日：1997-08-25
申请人： Vladimir Friedman , Mark Russell , Stuart D. Sandberg , Peter N. Heller
发明人： Vladimir Friedman , Mark Russell , Stuart D. Sandberg , Peter N. Heller
IPC分类号： H03M13/00
CPC分类号： H03M13/2703 , H03M13/271 , H04L1/0043 , H04L1/0071 , H03M13/1515
摘要： A forward error correction (FEC) system and method for use in a multipoint-to-point frame based synchronized transmission communication system in which data from users are sent in selected portions of data frames having coded symbols added thereto by encoders associated with each user. The number of bits per user assigned portions of data frames is established as an integer number of FEC code symbols. The interleaving depth is set equal to a multiple of the total number of code symbols sent by a user in a data frame. The encoders are synchronized such that all of the encoders start processing associated interleaving frames at the same time. In exemplary embodiments, the communication systems include DWMT and TDM communication systems.
摘要翻译：一种在基于多点对点帧同步传输通信系统中使用的前向纠错（FEC）系统和方法，其中来自用户的数据在具有与每个用户相关联的编码器添加到其中的编码符号的数据帧的选定部分中被发送。每个用户分配的数据帧部分的比特数被建立为整数个FEC码元。将交织深度设置为等于用户在数据帧中发送的代码符号的总数的倍数。编码器被同步，使得所有编码器同时开始处理相关的交织帧。在示例性实施例中，通信系统包括DWMT和TDM通信系统。

3. 发明授权

US08218664B2 Bit allocation among carriers in multicarrier communications 有权
标题翻译：多载波通信中运营商之间的比特分配
公开(公告)号：US08218664B2
公开(公告)日：2012-07-10
申请号：US12760766
申请日：2010-04-15
申请人： Jerome M. Shapiro , Stuart D. Sandberg , Marcos C. Tzannes
发明人： Jerome M. Shapiro , Stuart D. Sandberg , Marcos C. Tzannes
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L27/2608 , H04L1/004
摘要： A technique is provided that may be employed in multicarrier communications to improve the efficiency of error correction using symbol-oriented error correction methodologies, by reducing the number of error correction code symbols (102, 104 . . . ) that are received in error that result from a single channel error. More specifically, in this technique, bits from the symbols are allocated among the channels in such a way as to minimize the number of respective channels that are allocated bits belonging to more that one respective symbol during a respective transmission period.
摘要翻译：提供了可以在多载波通信中使用的技术，通过减少错误接收到的错误校正码符号（102,104 ...）的数量来提高使用符号的纠错方法的纠错效率，结果从单通道错误。更具体地说，在这种技术中，在各个信道之间分配来自这些符号的比特，以便在相应的传输周期期间最小化属于更多一个相应符号的分配比特的各个信道的数量。

4. 发明申请

US20100290514A1 Systems and Methods that Provide Frequency Domain Supplemental Training of the Time Domain Equalizer for DMT 有权
标题翻译：为DMT提供时域均衡器频域补充训练的系统和方法
公开(公告)号：US20100290514A1
公开(公告)日：2010-11-18
申请号：US12783783
申请日：2010-05-20
申请人： Stuart D. Sandberg , Arnon Friedmann , Jelena Jovin , Bindu Chandna
发明人： Stuart D. Sandberg , Arnon Friedmann , Jelena Jovin , Bindu Chandna
IPC分类号： H04L27/01
CPC分类号： H04L25/03038 , H04L25/03019 , H04L2025/03414 , H04L2025/03477 , H04L2025/03611 , H04L2025/03617 , H04L2025/03764 , H04L2025/0377
摘要： Using a known or later developed time domain equalizer coefficient training algorithm, a least square solution for the time domain equalizer coefficients is taken at a starting point and iteratively improved on. In particular, the improvement is directed towards maximizing number of bits per frame loaded over the time domain equalizer coefficient choice. This can be accomplished by maximizing capacity directly rather than setting a goal to shorten the channel and hoping that the capacity will be maximized as a result.
摘要翻译：使用已知或稍后开发的时域均衡器系数训练算法，在起点进行时域均衡器系数的最小二乘解，迭代改进。特别地，改进旨在通过时域均衡器系数选择来最大化每帧加载的比特数。这可以通过直接最大化容量来实现，而不是设定缩短通道的目标，并希望能力最大化。

5. 发明申请

US20100195755A1 BIT ALOCATION AMONG CARRIERS IN MULTICARRIER COMMUNICATIONS 有权
标题翻译：多媒体通信中的运动员的比特匹配
公开(公告)号：US20100195755A1
公开(公告)日：2010-08-05
申请号：US12760766
申请日：2010-04-15
申请人： Jerome M. Shapiro , Stuart D. Sandberg , Marcos C. Tzannes
发明人： Jerome M. Shapiro , Stuart D. Sandberg , Marcos C. Tzannes
IPC分类号： H04B15/00
CPC分类号： H04L27/2608 , H04L1/004
摘要： A technique is provided that may be employed in multicarrier communications to improve the efficiency of error correction using symbol-oriented error correction methodologies, by reducing the number of error correction code symbols (102, 104 . . . ) that are received in error that result from a single channel error. More specifically, in this technique, bits from the symbols are allocated among the channels in such a way as to minimize the number of respective channels that are allocated bits belonging to more that one respective symbol during a respective transmission period.
摘要翻译：提供了可以在多载波通信中使用的技术，通过减少错误接收到的错误校正码符号（102,104 ...）的数量来提高使用符号的纠错方法的纠错效率，结果从单通道错误。更具体地说，在这种技术中，在各个信道之间分配来自这些符号的比特，以便在相应的传输周期期间最小化属于更多一个相应符号的分配比特的各个信道的数量。

6. 发明授权

US07801225B2 Bit allocation among carriers in multicarrier communications 有权
标题翻译：多载波通信中运营商之间的比特分配
公开(公告)号：US07801225B2
公开(公告)日：2010-09-21
申请号：US10957612
申请日：2004-10-05
申请人： Jerome M. Shapiro , Stuart D. Sandberg , Marcos C. Tzannes
发明人： Jerome M. Shapiro , Stuart D. Sandberg , Marcos C. Tzannes
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L27/2608 , H04L1/004
摘要： A technique is provided that may be employed in multicarrier communications to improve the efficiency of error correction using symbol-oriented error correction methodologies, by reducing the number of error correction code symbols (102, 104 . . . ) that are received in error that result from a single channel error. More specifically, in this technique, bits from the symbols are allocated among the channels in such a way as to minimize the number of respective channels that are allocated bits belonging to more that one respective symbol during a respective transmission period.
摘要翻译：提供了可以在多载波通信中使用的技术，通过减少错误接收到的错误校正码符号（102,104 ...）的数量来提高使用符号的纠错方法的纠错效率，结果从单通道错误。更具体地说，在这种技术中，在各个信道之间分配来自这些符号的比特，以便在相应的传输周期期间最小化属于更多一个相应符号的分配比特的各个信道的数量。

7. 发明授权

US07636389B2 Systems and methods that provide frequency domain supplemental training of the time domain equalizer for DMT 失效
公开(公告)号：US07636389B2
公开(公告)日：2009-12-22
申请号：US12013874
申请日：2008-01-14
申请人： Stuart D. Sandberg , Jelena Jovin , Arnon Friedmann , Bindu Chandna
发明人： Stuart D. Sandberg , Jelena Jovin , Arnon Friedmann , Bindu Chandna
IPC分类号： H03H7/30
CPC分类号： H04L25/03038 , H04L25/03019 , H04L2025/03414 , H04L2025/03477 , H04L2025/03611 , H04L2025/03617 , H04L2025/03764 , H04L2025/0377
摘要： Using a known or later developed time domain equalizer coefficient training algorithm, a least square solution for the time domain equalizer coefficients is taken at a starting point and iteratively improved on. In particular, the improvement is directed towards maximizing number of bits per frame loaded over the time domain equalizer coefficient choice. This can be accomplished by maximizing capacity directly rather than setting a goal to shorten the channel and hoping that the capacity will be maximized as a result.

8. 发明申请

US20100054321A1 Systems and Methods that Provide Frequency Domain Supplemental Training of the Time Domain Equalizer for DMT 审中-公开
公开(公告)号：US20100054321A1
公开(公告)日：2010-03-04
申请号：US12615077
申请日：2009-11-09
申请人： Stuart D. Sandberg , Arnon Friedmann , Jelena Jovin , Bindu Chandna
发明人： Stuart D. Sandberg , Arnon Friedmann , Jelena Jovin , Bindu Chandna
IPC分类号： H04L27/01
CPC分类号： H04L25/03038 , H04L25/03019 , H04L2025/03414 , H04L2025/03477 , H04L2025/03611 , H04L2025/03617 , H04L2025/03764 , H04L2025/0377
摘要： Using a known or later developed time domain equalizer coefficient training algorithm, a least square solution for the time domain equalizer coefficients is taken at a starting point and iteratively improved on. In particular, the improvement is directed towards maximizing number of bits per frame loaded over the time domain equalizer coefficient choice. This can be accomplished by maximizing capacity directly rather than setting a goal to shorten the channel and hoping that the capacity will be maximized as a result.

9. 发明申请

US20120087399A1 Systems and Methods that Provide Frequency Domain Supplemental Training of the Time Domain Equalizer for DMT 审中-公开
标题翻译：为DMT提供时域均衡器频域补充训练的系统和方法
公开(公告)号：US20120087399A1
公开(公告)日：2012-04-12
申请号：US13330943
申请日：2011-12-20
申请人： Stuart D. Sandberg , Arnon Friedmann , Jelena Jovin , Bindu Chandna
发明人： Stuart D. Sandberg , Arnon Friedmann , Jelena Jovin , Bindu Chandna
IPC分类号： H04L27/01 , H04B1/38
CPC分类号： H04L25/03038 , H04L25/03019 , H04L2025/03414 , H04L2025/03477 , H04L2025/03611 , H04L2025/03617 , H04L2025/03764 , H04L2025/0377
摘要： Using a known or later developed time domain equalizer coefficient training algorithm, a least square solution for the time domain equalizer coefficients is taken at a starting point and iteratively improved on. In particular, the improvement is directed towards maximizing number of bits per frame loaded over the time domain equalizer coefficient choice. This can be accomplished by maximizing capacity directly rather than setting a goal to shorten the channel and hoping that the capacity will be maximized as a result.
摘要翻译：使用已知或稍后开发的时域均衡器系数训练算法，在起点进行时域均衡器系数的最小二乘解，迭代改进。特别地，改进旨在通过时域均衡器系数选择来最大化每帧加载的比特数。这可以通过直接最大化容量来实现，而不是设定缩短通道的目标，并希望能力最大化。

10. 发明授权

US08102909B2 Systems and methods that provide frequency domain supplemental training of the time domain equalizer for DMT 有权
标题翻译：为DMT提供时域均衡器的频域补充训练的系统和方法
公开(公告)号：US08102909B2
公开(公告)日：2012-01-24
申请号：US12783783
申请日：2010-05-20
申请人： Stuart D. Sandberg , Arnon Friedmann , Jelena Jovin , Bindu Chandna
发明人： Stuart D. Sandberg , Arnon Friedmann , Jelena Jovin , Bindu Chandna
IPC分类号： H03H7/30
CPC分类号： H04L25/03038 , H04L25/03019 , H04L2025/03414 , H04L2025/03477 , H04L2025/03611 , H04L2025/03617 , H04L2025/03764 , H04L2025/0377
摘要： Using a known or later developed time domain equalizer coefficient training algorithm, a least square solution for the time domain equalizer coefficients is taken at a starting point and iteratively improved on. In particular, the improvement is directed towards maximizing number of bits per frame loaded over the time domain equalizer coefficient choice. This can be accomplished by maximizing capacity directly rather than setting a goal to shorten the channel and hoping that the capacity will be maximized as a result.
摘要翻译：使用已知或稍后开发的时域均衡器系数训练算法，在起点进行时域均衡器系数的最小二乘解，迭代改进。特别地，改进旨在通过时域均衡器系数选择来最大化每帧加载的比特数。这可以通过直接最大化容量来实现，而不是设定缩短通道的目标，并希望能够最大化容量。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式