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1. 发明授权

US08416864B2 Initialization of and modem for an OFDM data transmission 有权
标题翻译： OFDM数据传输的初始化和调制解调器
公开(公告)号：US08416864B2
公开(公告)日：2013-04-09
申请号：US12493753
申请日：2009-06-29
申请人： Dmitri Korobkov , Patrick Langfeld , Vladimir Potapov , Christian Leeb , Hans-Joerg Maag , Hans Benninger , Stefan Ramseier
发明人： Dmitri Korobkov , Patrick Langfeld , Vladimir Potapov , Christian Leeb , Hans-Joerg Maag , Hans Benninger , Stefan Ramseier
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L1/0007 , H04L27/2605 , H04L27/2607
摘要： A method and modem are provided for obtaining an optimized efficiency of an Orthogonal Frequency Division Multiplex (OFDM) data transmission, such as for power line communication, for example. The length or duration of a guard interval or cyclic prefix in an OFDM symbol is newly selected at each start-up of a modem while initializing or preparing the OFDM data transmission. The length of the guard interval can be given by the number of samples in a time-discrete representation, and the value of such number of samples that is retained for the subsequent data transmission can be selected from a plurality of pre-determined possibilities based on an evaluation of a channel quality of a communication channel including a physical line to which the modem is connected. Hence, the selected value depends on actual transmission conditions, and the optimization potential offered by a more flexible handling of system parameters is exploited to meet changing conditions on the physical line.
摘要翻译：提供了一种用于获得例如用于电力线通信的正交频分复用（OFDM）数据传输的优化效率的方法和调制解调器。在初始化或准备OFDM数据传输时，在调制解调器的每次启动时新选择OFDM符号中的保护间隔或循环前缀的长度或持续时间。保护间隔的长度可以由时间 - 离散表示中的样本数量给出，并且保留用于后续数据传输的样本数量的值可以从基于以下的多个预定可能性中选择：包括调制解调器连接到的物理线路的通信信道的信道质量的评估。因此，所选择的值取决于实际的传输条件，并且利用更灵活的系统参数处理提供的优化潜力来满足物理线路上的变化条件。

2. 发明申请

US20100054314A1 INITIALIZATION OF AND MODEM FOR AN OFDM DATA TRANSMISSION 有权
标题翻译： OFDM数据传输的初始化和调制解调器
公开(公告)号：US20100054314A1
公开(公告)日：2010-03-04
申请号：US12493753
申请日：2009-06-29
申请人： Dmitri Korobkov , Patrick Langfeld , Vladimir Potapov , Christian Leeb , Hans-Joerg Maag , Hans Benninger , Stefan Ramseier
发明人： Dmitri Korobkov , Patrick Langfeld , Vladimir Potapov , Christian Leeb , Hans-Joerg Maag , Hans Benninger , Stefan Ramseier
IPC分类号： H04L27/28 , H04B1/38
CPC分类号： H04L1/0007 , H04L27/2605 , H04L27/2607
摘要： A method and modem are provided for obtaining an optimized efficiency of an Orthogonal Frequency Division Multiplex (OFDM) data transmission, such as for power line communication, for example. The length or duration of a guard interval or cyclic prefix in an OFDM symbol is newly selected at each start-up of a modem while initializing or preparing the OFDM data transmission. The length of the guard interval can be given by the number of samples in a time-discrete representation, and the value of such number of samples that is retained for the subsequent data transmission can be selected from a plurality of pre-determined possibilities based on an evaluation of a channel quality of a communication channel including a physical line to which the modem is connected. Hence, the selected value depends on actual transmission conditions, and the optimization potential offered by a more flexible handling of system parameters is exploited to meet changing conditions on the physical line.
摘要翻译：提供了一种用于获得例如用于电力线通信的正交频分复用（OFDM）数据传输的优化效率的方法和调制解调器。在初始化或准备OFDM数据传输时，在调制解调器的每次启动时新选择OFDM符号中的保护间隔或循环前缀的长度或持续时间。保护间隔的长度可以由时间 - 离散表示中的样本数量给出，并且保留用于后续数据传输的样本数量的值可以从基于以下的多个预定可能性中选择：包括调制解调器连接到的物理线路的通信信道的信道质量的评估。因此，所选择的值取决于实际的传输条件，并且利用更灵活的系统参数处理提供的优化潜力来满足物理线路上的变化条件。

3. 发明授权

US09001675B2 Communication method and system 有权
标题翻译：通信方式和系统
公开(公告)号：US09001675B2
公开(公告)日：2015-04-07
申请号：US13181709
申请日：2011-07-13
申请人： Wolfgang Wimmer , Hubert Kirrmann , Hermann Spiess , Stefan Ramseier , Allen Notter , Martin Israel
发明人： Wolfgang Wimmer , Hubert Kirrmann , Hermann Spiess , Stefan Ramseier , Allen Notter , Martin Israel
IPC分类号： G01R31/08 , G08C25/02 , H04B1/69 , H02H1/00 , H02H7/26 , H04B3/54 , H04J3/06
CPC分类号： H04B1/69 , H02H1/0061 , H02H7/261 , H04B3/54 , H04B2203/5458 , H04J3/0667 , H04L43/062 , H04L43/0805 , H04L43/0864 , H04L43/16 , Y04S40/168
摘要： Exemplary embodiments increase reliability of communication over a non-deterministic communication channel, in electric power systems. A communication channel is monitored based on regular network traffic, by evaluating messages or data packets carrying real-time operational data as a payload. A permanent determination of a channel quality, including appropriate alarming in case the channel quality is found insufficient, is based on an evaluation, at a receiving node, of data packets continually transmitted by a sending node. These continually or repeatedly transmitted data packets can include identical payloads reflecting current states rather than state changes as operational data.
摘要翻译：示例性实施例在电力系统中增加非确定性通信信道上的通信的可靠性。通过评估携带实时操作数据作为有效载荷的消息或数据包，基于常规网络流量来监视通信信道。在发现信道质量不足的情况下，通道质量的永久确定包括适当的报警，基于在接收节点对发送节点连续发送的数据分组的评估。这些连续或重复发送的数据分组可以包括反映当前状态的相同有效载荷，而不是作为操作数据的状态改变。

4. 发明授权

US6005477A Method and apparatus for information transmission via power supply lines 失效
标题翻译：通过电源线进行信息传输的方法和装置
公开(公告)号：US6005477A
公开(公告)日：1999-12-21
申请号：US60199
申请日：1998-04-15
申请人： Bernhard Deck , Josef Lehmann , Stefan Ramseier , Oddleif Westby
发明人： Bernhard Deck , Josef Lehmann , Stefan Ramseier , Oddleif Westby
IPC分类号： G08C19/12 , H04B3/54 , H04L1/00 , H04L27/26 , H04B1/00
CPC分类号： H04L1/0071 , H04B3/542 , H04L27/2601 , H04B2203/5416 , H04B2203/5425 , H04B2203/5483
摘要： A method and a system for rapid and interference-free data communication via power supply networks at any voltage levels. The combined effects of interference from signal distortion, frequency-selective signal attenuation or noise and from pulsed interference is reduced by using an MCM multicarrier modulation method. By combining the MCM method with a specially adapted interleaver (data scrambler) and error-protection coding, the error rates can be drastically reduced and the transmission rates can be increased to considerably more than 2 kbit/s.
摘要翻译：一种用于在任何电压级别通过电源网络进行快速和无干扰的数据通信的方法和系统。通过使用MCM多载波调制方法，减少了来自信号失真，频率选择信号衰减或噪声以及脉冲干扰的干扰的综合影响。通过将MCM方法与特别适应的交织器（数据扰码器）和错误保护编码相结合，可以大大降低错误率，传输速率可以提高到超过2 kbit / s。

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