公开(公告)号：US08634351B2

公开(公告)日：2014-01-21

申请号：US13159129

申请日：2011-06-13

申请人： Volker Aue ,  Andreas Bury

发明人： Volker Aue ,  Andreas Bury

IPC分类号： H04W4/00

CPC分类号： H04L27/2647 ,  H04L25/03318

摘要： An LTE baseband receiver and a method for operating the receiver are provided. The receiver comprises a frequency selective interference estimator, an interference level averager and an interference assessor operative to control which output of the frequency selective interference estimator or the interference level averager is to be supplied to a soft-metric calculator. Frequency selectivity of the interference is assessed, and the best mode of interference estimation is selected to increase LTE receiver performance in loaded networks without impacting receiver performance in unloaded networks.

摘要翻译： 提供LTE基带接收机和操作接收机的方法。 接收机包括频率选择干扰估计器，干扰电平平均器和干扰评估器，用于控制将频率选择干扰估计器或干扰电平平均器的输出提供给软度量计算器。 评估干扰的频率选择性，并选择最佳干扰估计模式，以增加加载网络中的LTE接收机性能，而不影响无负载网络中的接收机性能。

公开(公告)号：US07498888B2

公开(公告)日：2009-03-03

申请号：US10596454

申请日：2004-12-10

申请人： Gunnar Nitsche ,  Volker Aue ,  Andreas Bury

发明人： Gunnar Nitsche ,  Volker Aue ,  Andreas Bury

IPC分类号： H03L7/093

CPC分类号： H03L7/18 ,  H03L7/093 ,  H03L2207/06

摘要： The invention, which relates to a method and an arrangement for interference compensation in a phase-locked loop comprising a voltage-controlled frequency generator, wherein the frequency generator is tuned to a nominal frequency by a tuning voltage Vtune and whose actual frequency is compared with a reference frequency by means of a frequency comparison and is re-adjusted if a deviation is detected via the frequency comparison, in which case, in the event of interference, the tuning voltage Vtune is changed by an interference voltage Vstör that depends on the interference event, and thus a frequency deviating from the nominal frequency is generated, which deviating frequency is corrected again by the phase locked loop, is based on the object to provide a method and an arrangement for interference compensation in a phase-locked loop comprising a voltage-controlled frequency generator, with which a deviation from a predefined nominal frequency is avoided if known interference events occur. The object is achieved in accordance with the invention in a method whereby, if a known interference event occurs, a voltage Vstör which compensates for the interference voltage Vcomp, is generated in synchronism with this with sign inversion and is superimposed on the interference voltage Vstör.

摘要翻译： 本发明涉及一种包括压控频率发生器的锁相环中的干扰补偿的方法和装置，其中频率发生器通过调谐电压Vtune被调谐到标称频率，并将其实际频率与 通过频率比较的参考频率，并且如果经由频率比较检测到偏差，则重新调整，在这种情况下，在干扰的情况下，调谐电压Vtune被依赖于干扰的干扰电压Vstör改变 因此产生偏离标称频率的频率，该偏移频率由锁相环再次校正，其目的是提供一种用于在锁相环中的干扰补偿的方法和装置，该锁相环包括电压 控制的频率发生器，如果已知的干扰事件，则避免与预定义的标称频率的偏差 cur。 根据本发明的目的是通过一种方法实现的，其中如果发生已知的干扰事件，则补偿干扰电压V comp的电压Vstωr与符号反转同步地产生，并叠加在干扰电压Vstör上。

公开(公告)号：US20070194811A1

公开(公告)日：2007-08-23

申请号：US10596454

申请日：2004-12-10

申请人： Gunnar Nitsche ,  Volker Aue ,  Andreas Bury

发明人： Gunnar Nitsche ,  Volker Aue ,  Andreas Bury

IPC分类号： H03D13/00

CPC分类号： H03L7/18 ,  H03L7/093 ,  H03L2207/06

摘要： The invention, which relates to a method and an arrangement for interference compensation in a phase-locked loop comprising a voltage-controlled frequency generator, wherein the frequency generator is tuned to a nominal frequency by a tuning voltage Vtune and whose actual frequency is compared with a reference frequency by means of a frequency comparison and is re-adjusted if a deviation is detected via the frequency comparison, in which case, in the event of interference, the tuning voltage Vtune is changed by an interference voltage Vstör that depends on the interference event, and thus a frequency deviating from the nominal frequency is generated, which deviating frequency is corrected again by the phase locked loop, is based on the object to provide a method and an arrangement for interference compensation in a phase-locked loop comprising a voltage-controlled frequency generator, with which a deviation from a predefined nominal frequency is avoided if known interference events occur. The object is achieved in accordance with the invention in a method whereby, if a known interference event occurs, a voltage Vstör which compensates for the interference voltage Vcomp, is generated in synchronism with this with sign inversion and is superimposed on the interference voltage Vstör.

摘要翻译： 本发明涉及一种包括电压控制频率发生器的锁相环中的干扰补偿的方法和装置，其中频率发生器通过调谐电压调谐到标称频率 并且其实际频率通过频率比较与参考频率进行比较，并且如果经由频率比较检测到偏差，则重新调整，在这种情况下，在干扰的情况下，调谐电压V调谐 由依赖于干扰事件的干扰电压V S变化，因此产生偏离标称频率的频率，该偏移频率再次被锁相环校正， 是基于该目的提供一种用于在锁相环中进行干扰补偿的方法和装置，该锁相环包括电压控制频率发生器，与预定义的标称频率的偏差偏离该压控频率发生器 d如果发生已知的干扰事件。 根据本发明的目的是通过一种方法实现的，其中如果发生已知的干扰事件，则产生补偿干扰电压V COMP的补偿电压V S 与该符号反转同步，并且叠加在干扰电压V 上。

公开(公告)号：US20080310532A1

公开(公告)日：2008-12-18

申请号：US12097773

申请日：2006-12-14

申请人： Constant Paul Marie Jozef Baggen ,  Alessio Filippi ,  Sri Andari Husen ,  Maurice Leonardus Anna Stassen ,  Volker Aue ,  Andreas Bury ,  Thomas Fliess ,  Yann Casamajou ,  Frederic Pirot

发明人： Constant Paul Marie Jozef Baggen ,  Alessio Filippi ,  Sri Andari Husen ,  Maurice Leonardus Anna Stassen ,  Volker Aue ,  Andreas Bury ,  Thomas Fliess ,  Yann Casamajou ,  Frederic Pirot

IPC分类号： H04L27/28

CPC分类号： H04L27/261

摘要： In an OFDM mobile communications system, an algorithm for forming a preliminary estimate of the channel on pilot subcarriers is carried out. Based on this preliminary estimate, a channel property is estimated. This channel property is then used to decide whether to enter a mobile receiver mode or a stationary receiver mode. For example, in the mobile mode channel estimation is performed using only pilot symbols from the current symbol period, while in the static mode channel estimation is performed using pilot symbols from the current symbol period and pilot symbols from other symbol periods.

摘要翻译： 在OFDM移动通信系统中，执行用于形成导频子载波上的信道的初步估计的算法。 根据这个初步估计，估计一个频道属性。 然后，该频道属性用于决定是否进入移动接收机模式或静态接收机模式。 例如，在移动模式中，仅使用来自当前符号周期的导频符号进行信道估计，而在静态模式中，使用来自当前符号周期的导频符号和来自其他符号周期的导频符号来执行信道估计。

公开(公告)号：US20090177726A1

公开(公告)日：2009-07-09

申请号：US12305736

申请日：2007-05-16

申请人： Andreas Bury

发明人： Andreas Bury

IPC分类号： G06F17/17

CPC分类号： H03H17/0266

摘要： The invention relates to a method for processing a digital input signal (x(i)) in a digital domain, comprising: -sampling a wideband of input frequencies of said digital input signal (x(i)) with a sampling frequency (fs), which decimates with a decimation factor (D), -linear shaping said sampled input frequencies with a configurable delay, -producing an output signal (y(i)) containing said linear shaped input frequencies, wherein the output signal (y(i)) has the same sampling frequency (fs) as said input signal (x(i)).

摘要翻译： 本发明涉及一种用于处理数字域中的数字输入信号（x（i））的方法，包括：以采样频率（fs）采样所述数字输入信号（x（i））的宽带输入频率， ，其用抽取因子（D）抽取，以可配置的延迟对所述采样输入频率进行线性整形，产生包含所述线性形状输入频率的输出信号（y（i）），其中输出信号（y（i） ）具有与所述输入信号（x（i））相同的采样频率（fs）。

公开(公告)号：US20080267268A1

公开(公告)日：2008-10-30

申请号：US11632030

申请日：2005-07-05

申请人： Andreas Bury

发明人： Andreas Bury

IPC分类号： H04L25/00

CPC分类号： H03M1/661 ,  H04B1/0475

摘要： The invention relates to a method of converting a digital BB (baseband) signal into an analog IF (intermediate-frequency) signal, wherein the digital BB processor signal is oversampled K times by means of a BB/IF converter, and each ith channel of the K channels is subsequently selected by means of a controllable ith digital interpolation filter comprised in the BB/IF converter and controllable in K steps and is shifted into the ith frequency position in the spectrum of the analog IF signal. The object of the invention to create standardized compensations in a practicable manner in W-LAN units for a distortion of the frequency response which occurs during signal processing and is caused by the effects of the gap function (si) during D/A conversion and by the use of the transmission method and the mode of modulation is achieved in that the frequency response of the digital BB processor signal is realized without pre-emphasis. Subsequent to the BB/IF converter supplying the uncompensated digital IF signal and prior to the D/A converter converting the signal into the analog IF signal, a digital compensation filter corrects the frequency response for the analog IF signal by pre-emphasis of the compensated digital IF signal.

摘要翻译： 本发明涉及一种将数字BB（基带）信号转换成模拟IF（中频）信号的方法，其中数字BB处理器信号通过BB / IF转换器被过采样K次，并且每个i ^{th 频率位置。 本发明的目的是在W-LAN单元中以可行的方式在信号处理期间产生频率响应失真，并且由D / A转换期间的间隙函数（si）的影响和由D / A转换 通过实现数字BB处理器信号的频率响应而不预加重实现传输方式和调制方式的使用。 在BB / IF转换器提供未经补偿的数字IF信号之后，并且在D / A转换器将信号转换成模拟IF信号之前，数字补偿滤波器通过预先加权的补偿来校正模拟IF信号的频率响应 数字中频信号。}

公开(公告)号：US20150003573A1

公开(公告)日：2015-01-01

申请号：US13930726

申请日：2013-06-28

申请人： Stefan FECHTEL ,  Andreas Bury

发明人： Stefan FECHTEL ,  Andreas Bury

IPC分类号： H04B1/12

CPC分类号： H04B1/12 ,  H04L25/0224

摘要： The method comprises receiving a signal comprising a symbol-carrier matrix, the symbol-carrier matrix comprising a predetermined pattern of reference symbols, the reference symbols comprising a target reference symbol, determining a first channel estimate vector based on demodulating received reference symbols with known reference symbols, and determining a second channel estimate vector by multiplying the first channel estimate vector with an interference cancellation matrix, wherein the second channel estimate vector includes an interference cancelled channel estimate at a position of the target reference symbol.

摘要翻译： 该方法包括接收包括符号 - 载体矩阵的信号，所述符号 - 载波矩阵包括参考符号的预定模式，所述参考符号包括目标参考符号，基于解调已知参考的接收参考符号来确定第一信道估计向量 并且通过将第一信道估计向量与干扰消除矩阵相乘来确定第二信道估计向量，其中第二信道估计向量包括在目标参考符号的位置处的干扰消除信道估计。

公开(公告)号：US08750355B2

公开(公告)日：2014-06-10

申请号：US13277808

申请日：2011-10-20

申请人： Andreas Bury

发明人： Andreas Bury

IPC分类号： H04B17/00

CPC分类号： H04J11/0079 ,  H04L25/0228 ,  H04L27/263 ,  H04L27/265

摘要： In 3GPP LTE, user equipment must be able to report reference signal received power (RSRP) measurement to the serving cell's base station. A low-complexity method for asynchronous RSRP measurement in an LTE user equipment receiver is provided which includes frequency shifting the received signal so that the upper or lower half band becomes centered around the DC frequency; decimating the received signal to a width of n·2m samples, n being the reference symbol spacing in the received signal; dividing the samples into n sample vectors with a length of 2m each, superimposing the n sample vectors; and performing FFT operation on the superimposed signal.

摘要翻译： 在3GPP LTE中，用户设备必须能够向服务小区的基站报告参考信号接收功率（RSRP）测量。 提供了一种用于LTE用户设备接收机中用于异步RSRP测量的低复杂度方法，其包括对接收信号进行频移，使得上或下半频带以DC频率为中心; 将接收到的信号抽取到n·2m个采样的宽度，n是接收信号中的参考符号间隔; 将样本分成n个样本向量，每个样本向量长度为​​2m，叠加n个样本向量; 对叠加信号进行FFT运算。

公开(公告)号：US08379743B2

公开(公告)日：2013-02-19

申请号：US12875693

申请日：2010-09-03

申请人： Andreas Bury

发明人： Andreas Bury

IPC分类号： H04L27/28

CPC分类号： H04L27/38 ,  H04L25/0204 ,  H04L25/0242 ,  H04L25/03159 ,  H04L25/067 ,  H04L2025/03414 ,  H04L2025/0342 ,  H04L2025/03426 ,  H04L2025/03522

摘要： A method of compensating interference of received symbols in a MIMO OFDM receiver employs MMSE equalization and LLR scaling, and a MIMO OFDM receiver includes a linear MMSE equalizer. The method provides a low-complexity, numerically robust method for compensating interference of received symbols and provides a low-cost, robust digital baseband receiver for MIMO-OFDM, achieved by merging linear MMSE equalization and scaling of the corresponding equalized symbols into a single algorithm that, for the 2×M MIMO case, completely avoids computationally extensive matrix inversion and allows for significant simplification of symbol detection as compared to separate equalization and scaling.

摘要翻译： 在MIMO OFDM接收机中补偿接收符号的干扰的方法采用MMSE均衡和LLR缩放，MIMO OFDM接收机包括线性MMSE均衡器。 该方法提供了一种用于补偿接收符号干扰的低复杂度数值鲁棒的方法，并为MIMO-OFDM提供了一种低成本，稳健的数字基带接收机，通过将线性MMSE均衡和相应的均衡符号的缩放合并为单个算法 对于2×M MIMO情况，完全避免了计算上广泛的矩阵反演，并且与单独的均衡和缩放相比，允许符号检测的显着简化。

公开(公告)号：US20130016767A1

公开(公告)日：2013-01-17

申请号：US13543997

申请日：2012-07-09

申请人： Johan Pean ,  Andreas Bury

发明人： Johan Pean ,  Andreas Bury

IPC分类号： H04B1/10

CPC分类号： H04L25/024 ,  H04B7/0417 ,  H04L1/0001 ,  H04L1/20 ,  H04L25/03006 ,  H04L27/2601 ,  H04L27/2647

摘要： A mobile station receiving a signal from a base station experiences time/frequency varying channel conditions. In order to get the maximum throughput from a base-station, it is necessary to adjust the modulation and coding schemes to the actual channel quality. To do so, mobile receivers are required to probe the radio channel condition and feedback a limited set of estimated channel state information parameters such as CQI, RI, and PMI. The invention uses modulation-specific mutual information as a basic metric for CQI-PMI-RI computation to yield high bandwidth efficiency under both flat fading and interference conditions as well as time and frequency selective fading and interference conditions, at reasonable complexity.

摘要翻译： 从基站接收信号的移动台经历时间/频率变化的信道条件。 为了从基站获得最大吞吐量，有必要将调制和编码方案调整到实际的信道质量。 为此，需要移动接收机来探测无线电信道条件并且反馈一组有限的估计信道状态信息参数，例如CQI，RI和PMI。 本发明使用调制专用互信息作为CQI-PMI-RI计算的基本度量，在平坦衰落和干扰条件以及时间和频率选择性衰落和干扰条件下，以合理的复杂度产生高带宽效率。