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

WO2005096517A1 METHOD AND APPARATUS FOR PARAMETER ESTIMATION IN A GENERALIZED RAKE RECEIVER 审中-公开
标题翻译：广义RAKE接收机中参数估计的方法和装置
公开(公告)号：WO2005096517A1
公开(公告)日：2005-10-13
申请号：PCT/EP2005/002419
申请日：2005-03-08
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , CAIRNS, Douglas, A. , BOTTOMLEY, Gregory, E. , WANG, Yi-Pin, Eric , FULGHUM, Tracy , JONSSON, Elias
发明人： CAIRNS, Douglas, A. , BOTTOMLEY, Gregory, E. , WANG, Yi-Pin, Eric , FULGHUM, Tracy , JONSSON, Elias
IPC分类号： H04B1/707
CPC分类号： H04B1/712 , H04B1/7103 , H04B2201/709727
摘要： Exemplary received signal processing may be based on maintaining a model of received signal impairment correlations, wherein each term. of the model is updated periodically or as needed based on measuring impairments for a received signal of interest. An exemplary model comprises an interference impairment term scaled by a first model fitting parameter, and a noise impairment term scaled by a second model fitting parameters. The model terms may be maintained based on current channel estimates and delay information and may be fitted to measured impairment by adapting the model fitting parameters.based on the measured impairment. The modeled received signal impairment correlations may be used to compute RAKE combining weights for received signal processing, or to compute Signal-to-Interference (SIR) estimates. Combined or separate models may be used for multiple received signals. As such, the exemplary modeling is extended to soft handoff, multiple antennas, and other diversity situations.
摘要翻译：示例性的接收信号处理可以基于维持接收信号损害相关的模型，其中每个项。根据感兴趣的接收信号的测量损伤，周期性地或根据需要更新模型。示例性模型包括由第一模型拟合参数缩放的干扰损害项和由第二模型拟合参数缩放的噪声损伤项。模型条款可以根据当前渠道估计和延迟信息进行维护，并且可以通过根据测量的损失调整模型拟合参数来拟合测量的损失。建模的接收信号损害相关可用于计算接收信号处理的RAKE组合权重，或用于计算信号与干扰（SIR）估计。组合或分离的模型可用于多个接收信号。因此，示例性建模被扩展到软切换，多个天线和其他分集情况。

2. 发明申请

WO2011067716A2 METHOD AND APPARATUS FOR EFFICIENT AMLD MATRIX COMPUTATIONS 审中-公开
标题翻译：用于有效的AMLD矩阵计算的方法和设备
公开(公告)号：WO2011067716A2
公开(公告)日：2011-06-09
申请号：PCT/IB2010/055505
申请日：2010-11-30
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , CAIRNS, Douglas A. , BOTTOMLEY, Gregory E. , JONSSON, Elias
发明人： CAIRNS, Douglas A. , BOTTOMLEY, Gregory E. , JONSSON, Elias
IPC分类号： H04L25/03
CPC分类号： H04L25/03006 , H04B1/71057 , H04B2201/709727 , H04L25/03178 , H04L25/03203 , H04L25/03331 , H04L2025/03426
摘要： The computation of code-specific channel matrices for an Assisted Maximum Likelihood Detection (AMLD) receiver comprises separately computing high rate matrices that change each symbol period, and a low rate matrix that is substantially constant over a plurality of symbol periods. The high and low rate matrices are combined to generate a code-specific channel matrix for each receiver stage. The high rate matrices include scrambling and spreading code information, and the low rate matrices include information on the net channel response and combining weights. The low rate matrices are efficiently computed by a linear convolution in the frequency domain of the net channel response and combining weights (with zero padding to avoid circular convolution), then transforming the convolution to the time domain and extracting matrix elements. Where the combining weights are constant across stages, a common code-specific channel matrix may be computed and used in multiple AMLD receiver stages.
摘要翻译：用于辅助最大似然检测（AMLD）接收机的代码专用信道矩阵的计算包括分别计算改变每个符号周期的高速率矩阵和在多个实质上恒定的低速率矩阵符号时期。将高速率和低速率矩阵组合起来，为每个接收器级产生一个特定于代码的信道矩阵。高速率矩阵包括加扰和扩频码信息，低速率矩阵包括净信道响应和组合权重的信息。通过净信道响应的频域中的线性卷积并组合权重（具有零填充以避免循环卷积），然后将卷积变换到时域并提取矩阵元素，有效地计算低速率矩阵。在组合权重在各个阶段不变的情况下，可以计算并且在多个AMLD接收器阶段中使用通用码特定信道矩阵。

3. 发明申请

WO2009147003A1 METHOD AND APPARATUS FOR EFFICIENT ESTIMATION OF INTERFERENCE IN A WIRELESS RECEIVER 审中-公开
标题翻译：用于有效估计无线接收机干扰的方法和装置
公开(公告)号：WO2009147003A1
公开(公告)日：2009-12-10
申请号：PCT/EP2009/055773
申请日：2009-05-13
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) , CAIRNS, Douglas A. , BOTTOMLEY, Gregory E. , FULGHUM, Tracy , JONSSON, Elias , CEDERGREN, Andreas
发明人： CAIRNS, Douglas A. , BOTTOMLEY, Gregory E. , FULGHUM, Tracy , JONSSON, Elias , CEDERGREN, Andreas
IPC分类号： H04B1/707
CPC分类号： H04B1/7117 , H04B1/712
摘要： Methods and apparatus for determining an impairment covariance matrix for use in an interference-suppressing CDMA receiver are disclosed. In several of the disclosed embodiments, precise information regarding signal propagation delays is not needed. An exemplary method includes the selection of a plurality of processing delays for processing a received CDMA signal. Net channel coefficients for the processing delays are estimated and used to calculate an impairment covariance matrix. The impairment covariance matrix is calculated as a function of the estimated net channel coefficients and the processing delays, without estimating a propagation medium channel response for the received signal.
摘要翻译：公开了用于确定用于干扰抑制CDMA接收机的损害协方差矩阵的方法和装置。在所公开的几个实施例中，不需要关于信号传播延迟的精确信息。一种示例性方法包括选择用于处理所接收的CDMA信号的多个处理延迟。用于处理延迟的净通道系数被估计并用于计算损害协方差矩阵。损伤协方差矩阵作为估计的净通道系数和处理延迟的函数计算，而不估计接收信号的传播介质通道响应。

4. 发明申请

WO2008141991A1 RECEIVER PARAMETRIC COVARIANCE ESTIMATION FOR TRANSMIT DIVERSITY 审中-公开
标题翻译：接收端发射多样性的参数估计
公开(公告)号：WO2008141991A1
公开(公告)日：2008-11-27
申请号：PCT/EP2008/055903
申请日：2008-05-14
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , JONSSON, Elias , WANG, Yi-Pin, Eric , BOTTOMLEY, Gregory, E , GRANT, Stephen
发明人： JONSSON, Elias , WANG, Yi-Pin, Eric , BOTTOMLEY, Gregory, E , GRANT, Stephen
IPC分类号： H04B7/06 , H04B1/707
CPC分类号： H04B1/712 , H04B7/0634 , H04B2201/709727
摘要： A parametric form of G-Rake and chip equalization for closed-loop transmit diversity is provided, that accounts for impairment correlation between transmit antennas. In a closed-loop transmit diversity system, the base station transmits a signal from two or more antennas, using one of a predetermined set of relative phase offsets at one of the antennas. The parametric estimation of the impairment or data covariance is performed by summing terms, including a term for each possible phase offset. The terms are weighted by fitting parameters. The fitting parameters are jointly solved by fitting the impairment or data covariance estimate to a measured impairment or data covariance. In another aspect, a measured impairment covariance is formed by exploiting a special relationship between the pilot channels of the different transmit antennas.
摘要翻译：提供了用于闭环发射分集的G-Rake和码片均衡的参数形式，其考虑了发射天线之间的损害相关性。在闭环发射分集系统中，基站使用在天线之一处的预定相对相位偏移集合中的一个发射来自两个或更多个天线的信号。损伤或数据协方差的参数估计是通过求和术语来执行的，包括每个可能的相位偏移的项。这些术语通过拟合参数加权。拟合参数通过将损伤或数据协方差估计拟合为测量的损伤或数据协方差来共同解决。在另一方面，通过利用不同发射天线的导频信道之间的特殊关系来形成测量的损害协方差。

5. 发明申请

WO2011036620A2 CHANNEL GEOMETRY DETECTOR 审中-公开
标题翻译：通道几何探测器
公开(公告)号：WO2011036620A2
公开(公告)日：2011-03-31
申请号：PCT/IB2010/054240
申请日：2010-09-20
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , CAIRNS, Douglas A. , NIEWCZAS, Jaroslaw , MURATA, Joshitaka , JONSSON, Elias
发明人： CAIRNS, Douglas A. , NIEWCZAS, Jaroslaw , MURATA, Joshitaka , JONSSON, Elias
IPC分类号： H04B1/707
CPC分类号： H04B1/712 , H04B2201/7071
摘要： Adaptive reconfiguration of a wireless receiver is enabled based on channel geometry According to an embodiment, the wireless receiver includes a geometry factor processing module and signal processing modules, e.g. such as hut not limited to an SIR estimation module, a power estimation module, a despreading module, a low- pass filter, a combing weight generation module, a coefficient estimation module, a synchronization control channel interference canceller module, etc. The geometry factor processing module determines a geometry factor for the channel over which signals are transmitted to the wireless receiver, the geometry factor being a measure of the ratio of total transmitted power received by the wireless receiver to total interference plus noise power at the wireless receiver. One or more of the receiver signal, processing modules are reconfigurable based on the geometry factor.
摘要翻译：基于信道几何结构启用无线接收机的自适应重新配置。根据一个实施例，无线接收机包括几何因子处理模块和信号处理模块，例如无线接收器。诸如但不限于SIR估计模块，功率估计模块，解扩模块，低通滤波器，组合权重生成模块，系数估计模块，同步控制信道干扰消除器模块等。几何因子处理模块确定信号传输到无线接收机的信道的几何因子，几何因子是无线接收机接收到的总发射功率与无线接收机处的总干扰加噪声功率之比的度量。一个或多个接收器信号，处理模块可根据几何因素进行重新配置。

6. 发明申请

WO2010079412A1 A METHOD AND APPARATUS FOR SETTING RECEIVED SIGNAL PROCESSING DELAYS AS A FUNCTION OF CHANNEL DISPERSIVENESS 审中-公开
标题翻译：用于设置接收到的信号处理延迟作为信道分配功能的方法和装置
公开(公告)号：WO2010079412A1
公开(公告)日：2010-07-15
申请号：PCT/IB2010/000006
申请日：2010-01-06
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , CAIRNS, Douglas, A. , JONSSON, Elias , BERGMAN, Göran
发明人： CAIRNS, Douglas, A. , JONSSON, Elias , BERGMAN, Göran
IPC分类号： H04B1/707
CPC分类号： H04B1/712 , H04B1/7113 , H04B1/7117
摘要： A method and apparatus provide for setting processing delay assignments in a CDMA receiver using a flat-channel placement or using a dispersive channel placement, in dependence on characterizing the channel as flat or dispersive. For example, a receiver maintains a logical flag reliably indicating the current channel state as flat or dispersive, and assigns or otherwise sets processing delays — e.g., for received signal demodulation — using a flat-channel placement algorithm or a dispersive-channel placement algorithm. The "flat-channel" placement algorithm generally provides better performance in flat-channel environments, and the "dispersive-channel" placement algorithm generally provides better performance in dispersive channel environments. Such processing may be regarded as "activating" a simplified processing delay placement grid that offers better performance if the channel truly is flat, with the underlying advantage of providing a reliable mechanism for detecting flat channel conditions.
摘要翻译：一种方法和装置提供用于使用平面信道放置或使用色散信道放置来设置CDMA接收机中的处理延迟分配，这取决于将信道表示为平坦或分散。例如，接收机将可靠地指示当前信道状态的逻辑标志保持为平坦或分散，并且使用平坦信道布局算法或色散通道布局算法来分配或以其他方式设置处理延迟（例如，对于接收信号解调）。 “平面通道”放置算法通常在平坦通道环境中提供更好的性能，“色散通道”放置算法通常在色散通道环境中提供更好的性能。这样的处理可以被认为是“激活”简化的处理延迟布置网格，如果信道真的是平坦的，则提供更好的性能，其基本优点是提供用于检测平坦信道条件的可靠机制。

7. 发明申请

WO2010109296A2 SIGNAL RECEPTION WITH ADJUSTABLE PROCESSING DELAY PLACEMENT 审中-公开
标题翻译：信号接收可调节处理延迟放置
公开(公告)号：WO2010109296A2
公开(公告)日：2010-09-30
申请号：PCT/IB2010/000643
申请日：2010-03-22
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , CAIRNS, Douglas, A. , UESAKA, Kazuyoshi , JONSSON, Elias
发明人： CAIRNS, Douglas, A. , UESAKA, Kazuyoshi , JONSSON, Elias
IPC分类号： H04B1/707 , H04L25/03
CPC分类号： H04B1/7115 , H04B1/7117 , H04B2201/709727 , H04L25/0216
摘要： The placement of processing delays may be adjusted to facilitate signal reception. In an example embodiment, a composite signal having multiple signal images corresponding to multiple reception delays is received. A root-mean-square (RMS) delay spread is ascertained for the multiple reception delays that correspond to the multiple signal images of the composite signal. A set of temporal points is produced responsive to the RMS delay spread. Multiple processing delays are placed based on the set of temporal points. In different example implementations, the set of temporal points (e.g., of a grid) may be produced by adjusting a spacing between temporal points, by adjusting a total number of temporal points in the set, or by changing a center location of the set. The spacing and number of points may be adjusted responsive to the RMS delay spread. The center location may be adjusted responsive to at least one calculated delay.
摘要翻译：可以调整处理延迟的布置以促进信号接收。在示例实施例中，接收具有对应于多个接收延迟的多个信号图像的复合信号。确定对应于复合信号的多个信号图像的多个接收延迟的均方根（RMS）延迟扩展。响应于RMS延迟扩展产生一组时间点。基于一组时间点放置多个处理延迟。在不同的示例实现中，可以通过调整时间点之间的间隔，通过调整集合中的时间点的总数，或者通过改变集合的中心位置来产生时间点集合（例如，网格）。响应于RMS延迟扩展可以调整点的间隔和数量。可以响应于至少一个计算的延迟来调整中心位置。

8. 发明申请

WO2010097397A1 METHOD AND APPARATUS FOR ALLOCATING PROCESSING DELAYS IN MULTI-CARRIER SYSTEMS 审中-公开
标题翻译：在多载波系统中分配处理延迟的方法和装置
公开(公告)号：WO2010097397A1
公开(公告)日：2010-09-02
申请号：PCT/EP2010/052311
申请日：2010-02-24
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , CAIRNS, Douglas A. , JONSSON, Elias , DRUGGE, Oskar
发明人： CAIRNS, Douglas A. , JONSSON, Elias , DRUGGE, Oskar
IPC分类号： H04L5/02
CPC分类号： H04L25/03019 , H04B1/7115 , H04B1/7117 , H04L25/0206 , H04L2025/03414
摘要： A multi-corner linear equalization receiver, e g, a RAKE receiver or chip equalization receiver, is described herein. The multi-carrier receiver distributes processing delays among a plurality of received carriers based on a dispersion determined for each carrier. The receiver initially allocates a minimum number of processing delays sufficient for light dispersion to each carrier. For the dispersive carrier, the receiver allocates one or more additional processing delays In one embodiment, tho additional processing delays are allocated to the dispersive carriers based on SIR.
摘要翻译：这里描述了一个多角度线性均衡接收器，例如RAKE接收器或芯片均衡接收器。多载波接收机基于为每个载波确定的色散，在多个接收载波中分配处理延迟。接收机首先为每个载波分配足够的光散射的最小数量的处理延迟。对于色散载体，接收机分配一个或多个附加的处理延迟。在一个实施例中，根据SIR将额外的处理延迟分配给色散载波。

9. 发明申请

WO2010023530A2 NONPARAMETRIC MIMO G-RAKE RECEIVER 审中-公开
标题翻译：非参数MIMO G-RAKE接收机
公开(公告)号：WO2010023530A2
公开(公告)日：2010-03-04
申请号：PCT/IB2009/006619
申请日：2009-08-24
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , CAIRNS, Douglas, A. , GRANT, Stephen , REIAL, Andres , ROSENQVIST, Anders , JONSSON, Elias
发明人： CAIRNS, Douglas, A. , GRANT, Stephen , REIAL, Andres , ROSENQVIST, Anders , JONSSON, Elias
IPC分类号： H04B1/707
CPC分类号： H04B1/712 , H04B2201/709727
摘要： With a nonparametric G-Rake receiver, combining weights may be determined using a nonparametric mechanism in multiple-input, multiple-output (MIMO) scenarios. In an example embodiment, a method for a receiving device having a nonparametric G-Rake receiver entails calculating an impairment covariance matrix and determining combining weights. More specifically, the impairment covariance matrix is calculated based on a pilot channel using a nonparametric mechanism in a MIMO scenario in which a code-reuse interference term exists. The combining weights are determined for the nonparametric G-Rake receiver responsive to the impairment covariance matrix and by accounting for the code-reuse interference term.
摘要翻译：对于非参数G-Rake接收机，可以在多输入多输出（MIMO）场景中使用非参数机制来确定组合权重。在示例实施例中，具有非参数G-Rake接收机的接收设备的方法需要计算损害协方差矩阵并确定组合权重。更具体地，在存在代码重用干扰项的MIMO场景中，使用非参数机制基于导频信道来计算损害协方差矩阵。对于响应于损害协方差矩阵的非参数G-Rake接收机以及通过考虑代码重用干扰项来确定组合权重。

10. 发明申请

WO2010004389A2 RECEIVER AND METHOD FOR PROCESSING RADIO SIGNALS USING SOFT PILOT SYMBOLS 审中-公开
标题翻译：接收机和使用软指示符号处理无线电信号的方法
公开(公告)号：WO2010004389A2
公开(公告)日：2010-01-14
申请号：PCT/IB2009/005944
申请日：2009-06-15
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ.) , CAIRNS, Douglas, A. , JONSSON, Elias
发明人： CAIRNS, Douglas, A. , JONSSON, Elias
IPC分类号： H04L25/02
CPC分类号： H04L25/0236 , H04B2201/70701 , H04B2201/709727 , H04L1/0017 , H04L1/0041 , H04L1/0068 , H04L25/021 , H04L25/0226 , H04L25/03044 , H04L25/03324 , H04L25/061 , H04L27/0012 , H04L27/227 , H04L27/3455 , H04L27/3818 , H04L2001/0098 , H04L2025/03401 , H04L2025/0342 , H04L2025/03426 , H04L2025/03509 , H04L2025/03796 , H04L2027/0061 , H04L2027/0093
摘要： A receiver and method for receiving and processing a sequence of transmitted symbols in a digital communication system utilizing soft pilot symbols. A set of soft pilot symbols are transmitted with higher reliability than the remaining symbols in the sequence by modulating the soft pilot symbols with a lower order modulation such as BPSK or QPSK while modulating the remaining symbols with a higher order modulation such as 16QAM or 64QAM. The receiver knows the modulation type and location (time/frequency/code) of the soft pilot symbols, and demodulates them first. The receiver uses the demodulated soft pilot symbols as known symbols to estimate parameters of the received radio signal. Unlike traditional fixed pilots, the soft pilots still carry some data. Additionally, the soft pilots are particularly helpful in establishing the amplitude reference essential in demodulating the higher order modulation symbols.
摘要翻译：用于在使用软导频符号的数字通信系统中接收和处理发送符号序列的接收机和方法。通过用诸如BPSK或QPSK之类的较低阶调制来调制软导频符号，同时用诸如16QAM或64QAM的较高阶调制来调制剩余符号，以比该序列中的其余符号更高的可靠性来发送一组软导频符号。接收器知道软导频符号的调制类型和位置（时间/频率/编码），并首先解调它们。接收机使用解调的软导频符号作为已知符号来估计所接收的无线电信号的参数。与传统的固定飞行员不同，软飞行员仍然携带一些数据。此外，软导频对于建立对解调高阶调制符号至关重要的幅度参考特别有帮助。

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