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1. 发明授权

US08798176B2 Joint time/frequency processing for wireless receivers 有权
标题翻译：无线接收机的联合时间/频率处理
公开(公告)号：US08798176B2
公开(公告)日：2014-08-05
申请号：US12500891
申请日：2009-07-10
申请人： Douglas A. Cairns , Andres Reial , Anders Wallén
发明人： Douglas A. Cairns , Andres Reial , Anders Wallén
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L25/03261 , H04L25/03235
摘要： Channel estimation and/or equalization processing is performed in a wireless receiver in two stages. The first stage involves pre-filtering in the frequency domain to compact a grid-based representation of the net channel. The second stage involves implementing reduced-complexity time domain channel estimation and/or equalization. According to one embodiment, a received signal transmitted over a net channel is processed by pre-filtering the received signal in the frequency domain. The frequency domain pre-filtering compacts an N-tap effective grid-based representation of the net channel into a K-tap compacted grid-based representation of the net channel where K
摘要翻译：信道估计和/或均衡处理在两个阶段中在无线接收机中执行。第一阶段涉及在频域中进行预滤波以压缩网络通道的基于网格的表示。第二阶段涉及实现降低复杂度的时域信道估计和/或均衡。根据一个实施例，通过净频道发送的接收信号通过对频域中的接收信号进行预滤波来处理。频域预滤波将网络通道的N抽头有效网格表示压缩成K

2. 发明授权

US08938038B2 Extending the set of addressable interferers for interference mitigation 有权
标题翻译：扩展用于干扰减轻的一组可寻址干扰源
公开(公告)号：US08938038B2
公开(公告)日：2015-01-20
申请号：US13364856
申请日：2012-02-02
申请人： Andres Reial , Anders Wallén
发明人： Andres Reial , Anders Wallén
IPC分类号： H03D3/00
CPC分类号： H04J11/005 , H04B1/7103 , H04B1/7107 , H04J11/0059
摘要： Techniques for expanding the set of addressable interfering signals in an interference cancelling receiver are described, where the task of control message detection from interfering cells is integrated in an iterative receiver process where increasingly better a priori information on the received data signals from the previous iteration is used to detect additional control messages and successively grow the set of interfering signals included in the receiver's interference mitigation processing. In an example method, first estimated symbols for a desired signal are generated. A control channel corresponding to a first interfering signal is detected, where said detecting is based on the first estimated symbols. Signal characteristics information for the first interfering signal is then derived from the detected control channel signal, and used to generate second estimated symbols for the desired signal, using an interference-mitigation technique to mitigate the effects of the interfering signal.
摘要翻译：描述了用于在干扰消除接收机中扩展可寻址干扰信号集合的技术，其中来自干扰小区的控制消息检测的任务被集成在迭代接收机过程中，其中越来越好的来自先前迭代的接收数据信号的先验信息是用于检测附加的控制消息并且连续地增加包括在接收机的干扰减轻处理中的干扰信号集合。在示例性方法中，产生用于期望信号的第一估计符号。检测对应于第一干扰信号的控制信道，其中所述检测基于第一估计符号。然后从检测到的控制信道信号导出第一干扰信号的信号特征信息，并且使用干扰减轻技术来产生用于期望信号的第二估计符号，以减轻干扰信号的影响。

3. 发明授权

US08498640B2 Fast radio access technology detection for cell search 有权
标题翻译：快速无线接入技术检测小区搜索
公开(公告)号：US08498640B2
公开(公告)日：2013-07-30
申请号：US13076599
申请日：2011-03-31
申请人： Andres Reial , Niklas Andgart , Bengt Lindoff , Lennart Moren , Anders Wallén
发明人： Andres Reial , Niklas Andgart , Bengt Lindoff , Lennart Moren , Anders Wallén
IPC分类号： H04W4/00
CPC分类号： H04W48/16 , H04W88/06
摘要： Methods and apparatus are provided for detecting the radio access technology (RAT) employed in a received signal prior to performing a cell search. The RAT detection method may be used to identify the most likely RAT employed for each candidate frequency identified in an initial frequency scan. Once the most likely RAT is identified, the mobile communication device can then attempt synchronization according to the procedures for the most likely RAT. Identifying the RAT prior to the cell search reduces the number of synchronization attempts and, consequently, the time needed to perform the cell search.
摘要翻译：提供了用于在执行小区搜索之前检测在接收信号中采用的无线电接入技术（RAT）的方法和装置。 RAT检测方法可以用于识别在初始频率扫描中识别的每个候选频率所采用的最可能的RAT。一旦识别出最可能的RAT，则移动通信设备然后可以根据最可能的RAT的过程尝试同步。在小区搜索之前识别RAT减少了同步尝试的次数，因此减少了进行小区搜索所需的时间。

4. 发明申请

US20120252446A1 Fast Radio Access Technology Detection for Cell Search 有权
标题翻译：用于小区搜索的快速无线接入技术检测
公开(公告)号：US20120252446A1
公开(公告)日：2012-10-04
申请号：US13076599
申请日：2011-03-31
申请人： Andres Reial , Niklas Andgart , Bengt Lindoff , Lennart Moren , Anders Wallén
发明人： Andres Reial , Niklas Andgart , Bengt Lindoff , Lennart Moren , Anders Wallén
IPC分类号： H04W4/00
CPC分类号： H04W48/16 , H04W88/06
摘要： Methods and apparatus are provided for detecting the radio access technology (RAT) employed in a received signal prior to performing a cell search. The RAT detection method may be used to identify the most likely RAT employed for each candidate frequency identified in an initial frequency scan. Once the most likely RAT is identified, the mobile communication device can then attempt synchronization according to the procedures for the most likely RAT. Identifying the RAT prior to the cell search reduces the number of synchronization attempts and, consequently, the time needed to perform the cell search.
摘要翻译：提供了用于在执行小区搜索之前检测在接收信号中采用的无线电接入技术（RAT）的方法和装置。 RAT检测方法可以用于识别在初始频率扫描中识别的每个候选频率所采用的最可能的RAT。一旦识别出最可能的RAT，则移动通信设备然后可以根据最可能的RAT的过程尝试同步。在小区搜索之前识别RAT减少了同步尝试的次数，因此减少了进行小区搜索所需的时间。

5. 发明申请

US20130202063A1 Extending the Set of Addressable Interferers for Interference Mitigation 有权
标题翻译：扩展一组可寻址干扰者的干扰减轻
公开(公告)号：US20130202063A1
公开(公告)日：2013-08-08
申请号：US13364856
申请日：2012-02-02
申请人： Andres Reial , Anders Wallén
发明人： Andres Reial , Anders Wallén
IPC分类号： H04B1/10
CPC分类号： H04J11/005 , H04B1/7103 , H04B1/7107 , H04J11/0059
摘要： Techniques for expanding the set of addressable interfering signals in an interference cancelling receiver are described, where the task of control message detection from interfering cells is integrated in an iterative receiver process where increasingly better a priori information on the received data signals from the previous iteration is used to detect additional control messages and successively grow the set of interfering signals included in the receiver's interference mitigation processing. In an example method, first estimated symbols for a desired signal are generated. A control channel corresponding to a first interfering signal is detected, where said detecting is based on the first estimated symbols. Signal characteristics information for the first interfering signal is then derived from the detected control channel signal, and used to generate second estimated symbols for the desired signal, using an interference-mitigation technique to mitigate the effects of the interfering signal.
摘要翻译：描述了用于在干扰消除接收机中扩展可寻址干扰信号集合的技术，其中来自干扰小区的控制消息检测的任务被集成在迭代接收机过程中，其中越来越好的来自先前迭代的接收数据信号的先验信息是用于检测附加的控制消息并且连续地增加包括在接收机的干扰减轻处理中的干扰信号集合。在示例性方法中，产生用于期望信号的第一估计符号。检测对应于第一干扰信号的控制信道，其中所述检测基于第一估计符号。然后从检测到的控制信道信号导出第一干扰信号的信号特征信息，并且使用干扰减轻技术来产生用于期望信号的第二估计符号，以减轻干扰信号的影响。

6. 发明授权

US08699553B2 Data-aided SIR estimation 有权
标题翻译：数据辅助SIR估计
公开(公告)号：US08699553B2
公开(公告)日：2014-04-15
申请号：US12709239
申请日：2010-02-19
申请人： Anders Rosenqvist , Douglas A. Cairns , Andres Reial
发明人： Anders Rosenqvist , Douglas A. Cairns , Andres Reial
IPC分类号： H04B17/00 , H04L25/08
CPC分类号： H04L25/0226 , H04L25/0238
摘要： A signal-to-interference estimate is generated using unknown data symbols in place of or in addition to pilot symbols. Data received over a data channel (traffic channel or control channel) are collected. The data symbols are then used to compute an observation metric based on deviations of the data symbols from a predetermined set of possible data symbols, wherein one of the data symbols and symbol constellation is normalized. A data channel signal-to-interference ratio is then computed based on the observation metric.
摘要翻译：使用未知数据符号代替导频符号或除导频符号之外，生成信号到干扰估计。通过数据通道（业务信道或控制信道）接收的数据被收集。然后，数据符号用于基于来自预定的一组可能的数据符号的数据符号的偏差来计算观测度量，其中数据符号和符号星座之一被归一化。然后基于观测度量计算数据信道信号干扰比。

7. 发明授权

US08675879B2 Methods and devices for allocating scrambling codes 有权
标题翻译：用于分配扰码的方法和设备
公开(公告)号：US08675879B2
公开(公告)日：2014-03-18
申请号：US13500590
申请日：2010-11-03
申请人： Oskar Drugge , Douglas A. Cairns , Muhammad Kazmi , Andres Reial
发明人： Oskar Drugge , Douglas A. Cairns , Muhammad Kazmi , Andres Reial
IPC分类号： H04K1/00
CPC分类号： H04J11/005 , H04B1/70735 , H04B1/7083 , H04J11/0073 , H04J11/0076 , H04J11/0079 , H04L5/0023 , H04L5/0037 , H04L5/0048 , H04L25/0226 , H04L25/03866 , H04L27/2655
摘要： A method of operating a User Equipment (UE) for generating a second scrambling code group where the UE is configured for receiving downlink transmission from a Universal Mobile Telecommunications System Terrestrial Radio Access Network (UTRAN) on a set of at least two downlink carriers including an anchor carrier and at least a first secondary carrier includes: determining a first scrambling code group associated with a first cell on the anchor carrier and deriving the second scrambling code group associated with a second cell on said first secondary carrier using a predefined rule defining the relation between the second scrambling code group and the first scrambling code group.
摘要翻译：一种操作用户设备（UE）的方法，用于生成第二扰码组，其中UE被配置用于从通用移动电信系统地面无线电接入网络（UTRAN）接收在至少两个下行链路载波的集合上的下行链路传输，所述至少两个下行链路载波包括锚定载波和至少第一辅助载波包括：确定与所述锚定载波上的第一小区相关联的第一扰码组，并使用定义所述关系的预定义规则导出与所述第一辅助载波上的第二小区相关联的所述第二扰码组在第二加扰码组和第一加扰码组之间。

8. 发明授权

US08045600B2 Method and apparatus for compensating for processing timing misalignment in a communication receiver 有权
标题翻译：用于补偿通信接收机中的处理定时未对准的方法和装置
公开(公告)号：US08045600B2
公开(公告)日：2011-10-25
申请号：US12111526
申请日：2008-04-29
申请人： Douglas A. Cairns , Stephen J. Grant , Andres Reial , Mathias Riback
发明人： Douglas A. Cairns , Stephen J. Grant , Andres Reial , Mathias Riback
IPC分类号： H04B1/00
CPC分类号： H04B1/712 , H04B1/7105 , H04B1/7117 , H04B2201/709727
摘要： According to the teachings presented herein, a wireless communication apparatus compensates for timing misalignment in its received signal processing. In at least one embodiment, the apparatus estimates a set of path delays for a received signal and sets processing delays on the estimated path delays. The apparatus jointly hypothesizes combinations of fractional timing offsets for two or more paths, and computes a decision metric for each joint hypothesis that indicates the accuracy of the joint hypothesis. As non-limiting examples, the decision metric may be a signal quality metric, or a distance metric (such as between a measured net channel response and an effective net channel response reconstructed as a function of the combination of fractional timing offsets included in the joint hypothesis). The apparatus evaluates the decision metrics to identify a best estimate of timing misalignment, and correspondingly compensates coherent processing of the received signal.
摘要翻译：根据本文提出的教导，无线通信装置补偿其接收信号处理中的定时未对准。在至少一个实施例中，该装置估计接收信号的一组路径延迟并且对所估计的路径延迟设置处理延迟。该装置共同假设两个或多个路径的分数定时偏移的组合，并且计算指示联合假设的准确性的每个联合假设的决策度量。作为非限制性示例，决策度量可以是信号质量度量或距离度量（诸如在测量的净信道响应和作为包括在联合中的分数定时偏移的组合的函数中重建的有效网络信道响应之间）假设）。设备评估决策度量以识别定时未对准的最佳估计，并相应地补偿接收信号的相干处理。

9. 发明申请

US20110007793A1 JOINT TIME/FREQUENCY PROCESSING FOR WIRELESS RECEIVERS 有权
标题翻译：无线接收器的联合时间/频率处理
公开(公告)号：US20110007793A1
公开(公告)日：2011-01-13
申请号：US12500891
申请日：2009-07-10
申请人： Douglas A. Cairns , Andres Reial , Anders Wallen
发明人： Douglas A. Cairns , Andres Reial , Anders Wallen
IPC分类号： H04L27/01
CPC分类号： H04L25/03261 , H04L25/03235
摘要： Channel estimation and/or equalization processing is performed in a wireless receiver in two stages. The first stage involves pre-filtering in the frequency domain to compact a grid-based representation of the net channel. The second stage involves implementing reduced-complexity time domain channel estimation and/or equalization. According to one embodiment, a received signal transmitted over a net channel is processed by pre-filtering the received signal in the frequency domain. The frequency domain pre-filtering compacts an N-tap effective grid-based representation of the net channel into a K-tap compacted grid-based representation of the net channel where K
摘要翻译：信道估计和/或均衡处理在两个阶段中在无线接收机中执行。第一阶段涉及在频域中进行预滤波以压缩网络通道的基于网格的表示。第二阶段涉及实现降低复杂度的时域信道估计和/或均衡。根据一个实施例，通过净频道发送的接收信号通过对频域中的接收信号进行预滤波来处理。频域预滤波将网络通道的N抽头有效网格表示压缩为K

10. 发明申请

US20110206167A1 Data-Aided SIR Estimation 有权
标题翻译：数据辅助SIR估计
公开(公告)号：US20110206167A1
公开(公告)日：2011-08-25
申请号：US12709239
申请日：2010-02-19
申请人： Anders Rosenqvist , Douglas A. Cairns , Andres Reial
发明人： Anders Rosenqvist , Douglas A. Cairns , Andres Reial
IPC分类号： H04B1/10
CPC分类号： H04L25/0226 , H04L25/0238
摘要： A signal-to-interference estimate is generated using unknown data symbols in place of or in addition to pilot symbols. Data received over a data channel (traffic channel or control channel) are collected. The data symbols are then used to compute an observation metric based on deviations of the data symbols from a predetermined set of possible data symbols, wherein one of the data symbols and symbol constellation is normalized. A data channel signal-to-interference ratio is then computed based on the observation metric.
摘要翻译：使用未知数据符号代替导频符号或除导频符号之外，生成信号到干扰估计。通过数据通道（业务信道或控制信道）接收的数据被收集。然后，数据符号用于基于来自预定的一组可能的数据符号的数据符号的偏差来计算观测度量，其中数据符号和符号星座之一被归一化。然后基于观测度量计算数据信道信号干扰比。

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