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1. 发明授权

US07839947B2 Circuit and method for reducing the crest factor 有权
标题翻译：降低波峰因数的电路和方法
公开(公告)号：US07839947B2
公开(公告)日：2010-11-23
申请号：US10559751
申请日：2004-06-03
申请人： Axel Clausen , Werner Henkel , Dietmar Sträuβnigg , Steffen Trautmann
发明人： Axel Clausen , Werner Henkel , Dietmar Sträuβnigg , Steffen Trautmann
IPC分类号： H04L27/00
CPC分类号： H04L27/2624
摘要： According to the invention, a circuit for reducing the crest factor is provided: (A) with a transmit path with a data symbol to be transmitted; (B) with a model path, which is arranged in parallel with a section of the transmit path, which exhibits a model filter to which the non-oversampled data symbol to be transmitted can be supplied, the non-oversampled data symbol exhibiting a non-flat PSD power spectrum, which exhibits an analysis and evaluation circuit which is arranged following the model filter and which checks whether the time domain function of the data symbol to be transmitted exhibits within a predetermined time interval at least one maximum, the amount of which exceeds a first threshold and/or determines the associated position of the maximum within the time interval, and which, by scaling and displacing a dirac-like sample function generates a correction function in dependence on the position and the amplitude of the maximum; (C) with a subtracting device which is connected to outputs of the model path and of the transmit path and which subtracts the correction function from the data symbol to be transmitted.
摘要翻译：根据本发明，提供一种用于降低波峰因数的电路：（A）具有要发送的数据符号的发送路径; （B）具有与发送路径的一部分并行布置的模型路径，该模型路径呈现可以提供要被发送的非过采样数据符号的模型滤波器，未过采样的数据符号表示非该PSD功率谱表示分析和评估电路，该分析和评估电路被布置在模型滤波器之后，并且检查要发送的数据符号的时域功能是否在预定的时间间隔内至少呈现出最大值，其量超过第一阈值和/或在时间间隔内确定最大值的相关位置，并且通过缩放和移位狄拉克样样本函数根据最大值的位置和幅度产生校正函数; （C）与减法装置连接，该减法装置连接到模型路径和发送路径的输出，并从要发送的数据符号中减去校正功能。

2. 发明授权

US08045627B2 Method for reducing the crest factor 有权
标题翻译：降低波峰因数的方法
公开(公告)号：US08045627B2
公开(公告)日：2011-10-25
申请号：US10559697
申请日：2004-06-03
申请人： Axel Clausen , Werner Henkel , Dietmar Sträuβnigg , Steffen Trautmann
发明人： Axel Clausen , Werner Henkel , Dietmar Sträuβnigg , Steffen Trautmann
IPC分类号： H04K1/10
CPC分类号： H04L27/2618 , H04L27/2624
摘要： The invention relates to a method for reducing the crest factor of a data symbol to be transmitted in a multi-carrier data transmission system, in which the data symbol to be transmitted is a function of a multiplicity of signals provided within a predetermined data frame and each of these signals is allocated to a carrier, each carrier occupying in each case at least one frequency from a transmit data spectrum, at least one carrier being reserved which is not provided for the data transmission and the predetermined data frame exhibiting the data symbol and a prefix which is derived from a part of the data symbol, in which peak values within the prefix are also taken into consideration for reducing the crest factor.
摘要翻译：本发明涉及一种降低要在多载波数据传输系统中传输的数据符号的波峰因数的方法，其中待传输的数据符号是在预定数据帧内提供的多个信号的函数，这些信号中的每一个被分配给载波，每个载波在每种情况下占据来自发射数据频谱的至少一个频率，至少一个载波被保留，其不被提供用于数据传输，并且预定数据帧呈现出数据符号，从数据符号的一部分导出的前缀，其中还考虑了前缀中的峰值以减小波峰因数。

3. 发明授权

US07830783B2 Method and circuit for reducing the crest factor 有权
标题翻译：降低波峰因数的方法和电路
公开(公告)号：US07830783B2
公开(公告)日：2010-11-09
申请号：US10559698
申请日：2004-06-01
申请人： Axel Clausen , Werner Henkel , Dietmar Sträuβnigg , Steffen Trautmann
发明人： Axel Clausen , Werner Henkel , Dietmar Sträuβnigg , Steffen Trautmann
IPC分类号： H04J11/00
CPC分类号： H04L27/2624
摘要： The invention relates to a method for reducing the crest factor, comprising the following method steps: (a) IFFT transformation of a data symbol to be transmitted; (b) looking for all peak values within a frame of the IFFT-transformed data symbol the amount of which is above a predetermined threshold; (c) providing a sample correction function; (d) allocating a scaling and phase rotation to the sample correction function according to the amplitude and position of the peak values found; (e) generating a correction signal in the frequency domain from a linear combination of rotated and scaled vectors according to the scaling and position determined; (f) modifying, particularly reducing the peak value of the data symbol to be transmitted by subtracting the correction signal, and IFFT transformation of the peak-value-modified data symbol into the time domain. The invention also relates to a circuit for reducing the crest factor.
摘要翻译：本发明涉及一种降低波峰因数的方法，包括以下方法步骤：（a）要传输的数据符号的IFFT变换; （b）查找其量超过预定阈值的IFFT变换数据符号的帧内的所有峰值; （c）提供样本校正功能; （d）根据找到的峰值的幅度和位置，向采样校正功能分配缩放和相位旋转; （e）根据所确定的比例和位置，从旋转和缩放向量的线性组合产生频域中的校正信号; （f）特别地通过减去校正信号来修改要发送的数据符号的峰值，以及将峰值修正数据符号的IFFT变换变换为时域。本发明还涉及一种降低波峰因数的电路。

4. 发明申请

US20080043616A1 Method and Circuit for Reducing the Crest Factor 有权
标题翻译：降低峰值因子的方法和电路
公开(公告)号：US20080043616A1
公开(公告)日：2008-02-21
申请号：US10559698
申请日：2004-06-01
申请人： Axel Clausen , Werner Henkel , Dietmar Straussnigg , Steffen Trautmann
发明人： Axel Clausen , Werner Henkel , Dietmar Straussnigg , Steffen Trautmann
IPC分类号： H04J11/00
CPC分类号： H04L27/2624
摘要： The invention relates to a method for reducing the crest factor, comprising the following method steps: (a) IFFT transformation of a data symbol to be transmitted; (b) looking for all peak values within a frame of the IFFT-transformed data symbol the amount of which is above a predetermined threshold; (c) providing a sample correction function; (d) allocating a scaling and phase rotation to the sample correction function according to the amplitude and position of the peak values found; (e) generating a correction signal in the frequency domain from a linear combination of rotated and scaled vectors according to the scaling and position determined; (f) modifying, particularly reducing the peak value of the data symbol to be transmitted by subtracting the correction signal, and IFFT transformation of the peak-value-modified data symbol into the time domain. The invention also relates to a circuit for reducing the crest factor.
摘要翻译：本发明涉及一种降低波峰因数的方法，包括以下方法步骤：（a）要传输的数据符号的IFFT变换; （b）查找其量超过预定阈值的IFFT变换数据符号的帧内的所有峰值; （c）提供样本校正功能; （d）根据找到的峰值的幅度和位置，向采样校正功能分配缩放和相位旋转; （e）根据所确定的比例和位置，从旋转和缩放向量的线性组合产生频域中的校正信号; （f）特别地通过减去校正信号来修改要发送的数据符号的峰值，以及将峰值修正数据符号的IFFT变换变换为时域。本发明还涉及一种降低波峰因数的电路。

5. 发明申请

US20070099579A1 Circuit and method for reducing the crest factor 有权
标题翻译：降低波峰因数的电路和方法
公开(公告)号：US20070099579A1
公开(公告)日：2007-05-03
申请号：US10559751
申请日：2004-06-03
申请人： Axel Clausen , Werner Henkel , Dietmar Straussnigg , Steffen Trautmann
发明人： Axel Clausen , Werner Henkel , Dietmar Straussnigg , Steffen Trautmann
IPC分类号： H04B1/40
CPC分类号： H04L27/2624
摘要： According to the invention, a circuit for reducing the crest factor is provided: (A) with a transmit path with a data symbol to be transmitted; (B) with a model path, which is arranged in parallel with a section of the transmit path, which exhibits a model filter to which the non-oversampled data symbol to be transmitted can be supplied, the non-oversampled data symbol exhibiting a non-flat PSD power spectrum, which exhibits an analysis and evaluation circuit which is arranged following the model filter and which checks whether the time domain function of the data symbol to be transmitted exhibits within a predetermined time interval at least one maximum, the amount of which exceeds a first threshold and/or determines the associated position of the maximum within the time interval, and which, by scaling and displacing a dirac-like sample function generates a correction function in dependence on the position and the amplitude of the maximum; (C) with a subtracting device which is connected to outputs of the model path and of the transmit path and which subtracts the correction function from the data symbol to be transmitted.
摘要翻译：根据本发明，提供一种用于降低波峰因数的电路：（A）具有要发送的数据符号的发送路径; （B）具有与发送路径的一部分并行布置的模型路径，该模型路径呈现可以提供要被发送的非过采样数据符号的模型滤波器，未过采样的数据符号表示非该PSD功率谱表示分析和评估电路，该分析和评估电路被布置在模型滤波器之后，并且检查要发送的数据符号的时域功能是否在预定的时间间隔内至少呈现出最大值，其量超过第一阈值和/或在时间间隔内确定最大值的相关位置，并且通过缩放和移位狄拉克样样本函数根据最大值的位置和幅度产生校正函数; （C）与减法装置连接，该减法装置连接到模型路径和发送路径的输出，并从要发送的数据符号中减去校正功能。

6. 发明申请

US20070121736A1 Method for reducing the crest factor 有权
标题翻译：降低波峰因数的方法
公开(公告)号：US20070121736A1
公开(公告)日：2007-05-31
申请号：US10559697
申请日：2004-06-03
申请人： Axel Clausen , Werner Henkel , Dietmar Straussnigg , Steffen Trautmann
发明人： Axel Clausen , Werner Henkel , Dietmar Straussnigg , Steffen Trautmann
IPC分类号： H04K1/10
CPC分类号： H04L27/2618 , H04L27/2624
摘要： The invention relates to a method for reducing the crest factor of a data symbol to be transmitted in a multi-carrier data transmission system, in which the data symbol to be transmitted is a function of a multiplicity of signals provided within a predetermined data frame and each of these signals is allocated to a carrier, each carrier occupying in each case at least one frequency from a transmit data spectrum, at least one carrier being reserved which is not provided for the data transmission and the predetermined data frame exhibiting the data symbol and a prefix which is derived from a part of the data symbol, in which peak values within the prefix are also taken into consideration for reducing the crest factor.
摘要翻译：本发明涉及一种降低要在多载波数据传输系统中传输的数据符号的波峰因数的方法，其中待传输的数据符号是在预定数据帧内提供的多个信号的函数，这些信号中的每一个被分配给载波，每个载波在每种情况下占据来自发射数据频谱的至少一个频率，至少一个载波被保留，其不被提供用于数据传输，并且预定数据帧呈现出数据符号，从数据符号的一部分导出的前缀，其中还考虑了前缀中的峰值以减小波峰因数。

7. 发明授权

US08630249B2 Allocation of signal-to-noise ratio margin in multi-carrier systems 有权
标题翻译：多载波系统中信噪比裕度的分配
公开(公告)号：US08630249B2
公开(公告)日：2014-01-14
申请号：US13447332
申请日：2012-04-16
申请人： Umashankar Thyagarajan , Frenzel Rudi , Bernd Heise , Axel Clausen
发明人： Umashankar Thyagarajan , Frenzel Rudi , Bernd Heise , Axel Clausen
IPC分类号： H04W4/00
CPC分类号： H04L5/0046 , H04L5/0007 , H04L5/006 , H04L5/0064
摘要： Allocation of different signal-to-noise margins to different carriers in a multi-carrier system is described. A preferred embodiment comprises assigning signal-to-noise ratio (SNR) margins to carriers in a multi-carrier system, comprises assigning a first SNR margin to a first data service based upon a first service characteristic, assigning a second SNR margin to a second data service based upon a second service characteristic, transmitting data associated with the first data service using the first signal-to-noise margin, and transmitting data associated with the second data service using the second signal-to-noise margin.
摘要翻译：描述了在多载波系统中将不同信噪比裕度分配给不同载波的情况。优选实施例包括向多载波系统中的载波分配信噪比（SNR）余量，包括基于第一服务特性向第一数据服务分配第一SNR余量，将第二SNR余量分配给第二信号基于第二服务特性的数据服务，使用第一信噪比容限发送与第一数据服务相关联的数据，以及使用第二信噪比容限发送与第二数据服务相关联的数据。

8. 发明授权

US08441912B2 Method and apparatus for data transmission 有权
标题翻译：用于数据传输的方法和装置
公开(公告)号：US08441912B2
公开(公告)日：2013-05-14
申请号：US11522800
申请日：2006-09-18
申请人： Axel Clausen
发明人： Axel Clausen
IPC分类号： H04B3/20
CPC分类号： H04L25/03343 , H04B3/487 , H04B2203/5408 , H04L27/2601
摘要： A first device receives a first signal transmitted over a transmission line from a second device. The first signal is processed and information is generated that is related to crosstalk from other transmission lines. The information is modulated onto at least one carrier of a plurality of carriers of a second signal to be transmitted from the first device to the second device.
摘要翻译：第一设备接收从第二设备通过传输线传输的第一信号。对第一信号进行处理，产生与其他传输线串扰有关的信息。信息被调制到要从第一设备发送到第二设备的第二信号的多个载波的至少一个载波上。

9. 发明授权

US08064504B2 Protection of communication systems against repetitive electrical impulse noise 有权
标题翻译：防止通信系统重复电脉冲噪声
公开(公告)号：US08064504B2
公开(公告)日：2011-11-22
申请号：US11697893
申请日：2007-04-09
申请人： Axel Clausen , Vladimir Oksman
发明人： Axel Clausen , Vladimir Oksman
IPC分类号： H04B1/38
CPC分类号： H04B15/02 , H04L5/14 , H04L5/1438
摘要： A method limits the effect of repetitive electrical impulse noise in a communication system. The presence of the repetitive electrical impulse noise is detected during communication service. If the repetitive electrical impulse noise is detected, then a message is transmitted which signals that the repetitive electrical impulse noise is present. Other systems and methods are disclosed.
摘要翻译：一种方法限制了通信系统中重复的电脉冲噪声的影响。在通信服务期间检测到重复电脉冲噪声的存在。如果检测到重复的电脉冲噪声，则发送一个信号，表明存在重复的电脉冲噪声。公开了其它系统和方法。

10. 发明申请

US20100254444A1 Methods of Implementing Low-Power Mode for DSL Modems 有权
标题翻译：实现DSL调制解调器低功耗模式的方法
公开(公告)号：US20100254444A1
公开(公告)日：2010-10-07
申请号：US12748489
申请日：2010-03-29
申请人： Axel Clausen , Umashankar Thyagarajan , Thomas Zettler
发明人： Axel Clausen , Umashankar Thyagarajan , Thomas Zettler
IPC分类号： H04B1/38
CPC分类号： H04M11/062 , H04L5/0042 , H04L5/1438 , H04W52/42
摘要： According to an embodiment, a DSL transceiver is set in a low power mode and moved out of the low power mode responsive to the DSL transceiver receiving data. Data is transmitted only on a first group of sub-carriers when moving the DSL transceiver out of the low power mode, the first group of sub-carriers being a subset of the sub-carriers available to the DSL transceiver for transmission.
摘要翻译：根据实施例，响应于DSL收发器接收数据，DSL收发器被设置为低功率模式并且移出低功率模式。当将DSL收发器移出低功率模式时，数据仅在第一组子载波上传输，第一组子载波是DSL收发器可用于传输的副载波的子集。

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