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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

US08811504B2 Method of determining a channel quality and modem 有权
标题翻译：确定信道质量和调制解调器的方法
公开(公告)号：US08811504B2
公开(公告)日：2014-08-19
申请号：US12492966
申请日：2009-06-26
申请人： Dimitri Korobkov , Patrick Langfeld , Hans Benninger
发明人： Dimitri Korobkov , Patrick Langfeld , Hans Benninger
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04B3/54 , H04B2203/5416 , H04L5/0007 , H04L5/0046 , H04L5/006 , H04L27/2647
摘要： Data transmission is disclosed over a transmission channel that is subject to narrowband interferers. An increased overall bit or data transmission rate is achieved by an exemplary method of determining a channel capacity of plural sub-channels of the transmission channel based on a net background noise power estimation. The net background noise power contains only white noise-like contributions and excludes, to a reasonable extent, noise contributions or signal power from narrowband interferers. Hence, the net background noise power can be reduced. For example, an Orthogonal Frequency Division Multiplex (OFDM) signal code construction or bit allocation scheme can be chosen that provides for optimized data transmission at a data rate that approximates or approaches the more realistic channel capacity of an individual sub-channel, resulting in an increased overall bit or data transmission rate.
摘要翻译：在经受窄带干扰的传输信道上公开数据传输。通过基于净背景噪声功率估计来确定传输信道的多个子信道的信道容量的示例性方法来实现增加的总比特或数据传输速率。净背景噪声功率仅包含白噪声的贡献，并在合理的范围内排除来自窄带干扰源的噪声贡献或信号功率。因此，可以减少净背景噪声功率。例如，可以选择正交频分复用（OFDM）信号码构造或比特分配方案，其以接近或接近单个子信道的更逼真的信道容量的数据速率提供优化的数据传输，导致增加总位或数据传输速率。

4. 发明申请

US20090316766A1 METHOD OF DETERMINING A CHANNEL QUALITY AND MODEM 有权
标题翻译：确定通道质量和调制解调器的方法
公开(公告)号：US20090316766A1
公开(公告)日：2009-12-24
申请号：US12492966
申请日：2009-06-26
申请人： Dimitri KOROBKOV , Patrick LANGFELD , Hans BENNINGER
发明人： Dimitri KOROBKOV , Patrick LANGFELD , Hans BENNINGER
IPC分类号： H04B17/00
CPC分类号： H04B3/54 , H04B2203/5416 , H04L5/0007 , H04L5/0046 , H04L5/006 , H04L27/2647
摘要： Data transmission is disclosed over a transmission channel that is subject to narrowband interferers. An increased overall bit or data transmission rate is achieved by an exemplary method of determining a channel capacity of plural sub-channels of the transmission channel based on a net background noise power estimation. The net background noise power contains only white noise-like contributions and excludes, to a reasonable extent, noise contributions or signal power from narrowband interferers. Hence, the net background noise power can be reduced. For example, an Orthogonal Frequency Division Multiplex (OFDM) signal code construction or bit allocation scheme can be chosen that provides for optimized data transmission at a data rate that approximates or approaches the more realistic channel capacity of an individual sub-channel, resulting in an increased overall bit or data transmission rate.
摘要翻译：在经受窄带干扰的传输信道上公开数据传输。通过基于净背景噪声功率估计来确定传输信道的多个子信道的信道容量的示例性方法来实现增加的总比特或数据传输速率。净背景噪声功率仅包含白噪声的贡献，并在合理的范围内排除来自窄带干扰源的噪声贡献或信号功率。因此，可以减少净背景噪声功率。例如，可以选择正交频分复用（OFDM）信号码构造或比特分配方案，其提供以接近或接近单个子信道的更逼真的信道容量的数据速率进行优化的数据传输，导致增加总位或数据传输速率。

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