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。

2. 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。

3. 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。

4. 发明申请

US20090207060A1 SIGNAL CONVERSION USING FINITE IMPULSE RESPONSE FEEDBACK 有权
标题翻译：信号转换使用有限的反应反馈
公开(公告)号：US20090207060A1
公开(公告)日：2009-08-20
申请号：US12032248
申请日：2008-02-15
申请人： Luis Hernandez , Dietmar Straussnigg , Andreas Wiesbauer
发明人： Luis Hernandez , Dietmar Straussnigg , Andreas Wiesbauer
IPC分类号： H03M3/00 , H03M1/12
CPC分类号： H03M3/344 , H03M1/504 , H03M3/372 , H03M3/46
摘要： Techniques for converting signals using finite impulse response (FIR) feedback are described herein.
摘要翻译：本文描述了使用有限脉冲响应（FIR）反馈来转换信号的技术。

5. 发明申请

US20090109078A1 Quantization Error Reduction in PWM Full-MASH Converters 有权
标题翻译： PWM全MASH转换器的量化误差减少
公开(公告)号：US20090109078A1
公开(公告)日：2009-04-30
申请号：US11923550
申请日：2007-10-24
申请人： Dietmar Straussnigg , Andreas Wiesbauer , Luis Hernandez
发明人： Dietmar Straussnigg , Andreas Wiesbauer , Luis Hernandez
IPC分类号： H03M1/12
CPC分类号： H03M3/46 , H03M3/432
摘要： Techniques for reducing quantization error in electronic components are described herein.
摘要翻译：本文描述了用于减少电子部件中的量化误差的技术。

6. 发明授权

US07576673B2 Increasing the dynamic range of pulse width modulation in analog to digital converters 有权
标题翻译：增加模数转换器中脉宽调制的动态范围
公开(公告)号：US07576673B2
公开(公告)日：2009-08-18
申请号：US11948206
申请日：2007-11-30
申请人： Dietmar Straussnigg , Andreas Wiesbauer , Luis Hernandez , Susana Paton Alvarez
发明人： Dietmar Straussnigg , Andreas Wiesbauer , Luis Hernandez , Susana Paton Alvarez
IPC分类号： H03M3/00
CPC分类号： H03K7/08 , H03M3/022
摘要： This disclosure relates to adjusting a limit cycle frequency of a pulse width modulation in an analog to digital converter as a function of an input signal level to increase dynamic range.
摘要翻译：本公开涉及根据输入信号电平调整模数转换器中的脉冲宽度调制的极限周期频率以增加动态范围。

7. 发明申请

US20090140904A1 INCREASING THE DYNAMIC RANGE OF PULSE WIDTH MODULATION IN ANALOG TO DIGITAL CONVERTERS 有权
标题翻译：增加数字转换器中模拟脉冲宽度调制的动态范围
公开(公告)号：US20090140904A1
公开(公告)日：2009-06-04
申请号：US11948206
申请日：2007-11-30
申请人： Dietmar Straussnigg , Andreas Wiesbauer , Luis Hernandez , Susana Paton Alvarez
发明人： Dietmar Straussnigg , Andreas Wiesbauer , Luis Hernandez , Susana Paton Alvarez
IPC分类号： H03M1/38 , H03M1/12
CPC分类号： H03K7/08 , H03M3/022
摘要： This disclosure relates to adjusting a limit cycle frequency of a pulse width modulation in an analog to digital converter as a function of an input signal level to increase dynamic range.
摘要翻译：本公开涉及根据输入信号电平调整模数转换器中的脉冲宽度调制的极限周期频率以增加动态范围。

8. 发明申请

US20090109075A1 SAMPLING ERROR REDUCTION IN PWM-MASH CONVERTERS 有权
标题翻译： PWM脉冲变换器中采样误差的降低
公开(公告)号：US20090109075A1
公开(公告)日：2009-04-30
申请号：US11923494
申请日：2007-10-24
申请人： Dietmar Straussnigg , Andreas Wiesbauer , Luis Hernandez , Daniel Mark
发明人： Dietmar Straussnigg , Andreas Wiesbauer , Luis Hernandez , Daniel Mark
IPC分类号： H03M3/02
CPC分类号： H03M3/37 , H03M3/432 , H03M3/46
摘要： Techniques for reducing sampling error in electronic components are described herein.
摘要翻译：本文描述了用于减少电子部件中的采样误差的技术。

9. 发明授权

US07002404B2 Tuning circuit for a filter 有权
标题翻译：滤波器调谐电路
公开(公告)号：US07002404B2
公开(公告)日：2006-02-21
申请号：US10773710
申请日：2004-02-06
申请人： Richard Gaggl , Manfred Nopp , Peter Pessl , Christian Schranz , Dietmar Straussnigg
发明人： Richard Gaggl , Manfred Nopp , Peter Pessl , Christian Schranz , Dietmar Straussnigg
IPC分类号： H03K5/00
CPC分类号： H03H11/1291 , H03H19/008 , H03H2210/021 , H03H2210/043
摘要： The invention relates to a tuning circuit for tuning a filter stage, which has an RC element (1) with an RC time constant (τ), with the RC time constant (τ) being the product of the resistance of a resistor (R1) in the RC element (1) and the capacitance of a capacitor (C1), which is connected in series with the resistor (R1), in the RC element (1), having a comparator (10) for comparison of the voltage which is produced at the potential node (4) between the resistor (R1) and the capacitor (C1), with a reference ground voltage; and having a controller (15) which varies the charge on the capacitor (C1) in the RC element (1) until the comparator (10) indicates that the voltage which is produced at the potential node (4) is equal to the reference ground voltage, with the controller (15) switching a capacitor array (26) as a function of the charge variation time, which capacitor array (26) is connected in parallel with the capacitor (C1) in the RC element (1), in order to compensate for any discrepancy between the RC time constant (τ) of the RC element (1) and a nominal value.
摘要翻译：本发明涉及一种用于调谐滤波器级的调谐电路，其具有RC时间常数（τ）的RC元件（1），其中RC时间常数（τ）是电阻器（R 1 ）和RC元件（1）中与电阻器（R 1）串联连接的电容器（C1）的电容，具有比较器（10），用于比较在电阻器（R 1）和电容器（C 1）之间的电位节点（4）产生的具有参考接地电压的电压; 并且具有改变RC元件（1）中的电容器（C1）上的电荷的控制器（15），直到比较器（10）指示在电势节点（4）处产生的电压等于参考接地电压，控制器（15）根据电荷变化时间切换电容器阵列（26），电容器阵列（26）与RC元件（1）中的电容器（C 1）并联连接，以便补偿RC元件（1）的RC时间常数（τ）与标称值之间的任何差异。

10. 发明授权

US08031095B2 Signal conversion using finite impulse response feedback 有权
标题翻译：使用有限脉冲响应反馈的信号转换
公开(公告)号：US08031095B2
公开(公告)日：2011-10-04
申请号：US12610176
申请日：2009-10-30
申请人： Luis Hernandez , Dietmar Straussnigg , Andreas Wiesbauer
发明人： Luis Hernandez , Dietmar Straussnigg , Andreas Wiesbauer
IPC分类号： H03M3/00
CPC分类号： H03M3/344 , H03M1/504 , H03M3/372 , H03M3/46
摘要： Disclosed are techniques for reducing noise and providing conversion signals in electronic components, including pulse width modulation (PWM) oversampling converters, by performing signal conversion having finite impulse response (FIR) feedback. Implementations may reduce the sensitivity of the conversion process to jitter in the sampling clock, thereby reducing noise and providing conversion signals.
摘要翻译：公开了通过执行具有有限脉冲响应（FIR）反馈的信号转换来减少噪声和提供电子部件中的转换信号的技术，包括脉宽调制（PWM）过采样转换器。实现可能会降低采样时钟中转换过程对抖动的灵敏度，从而降低噪声并提供转换信号。

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