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1. 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。

2. 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。

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

WO2010119031A1 METHOD AND APPARATUS FOR DIRECT ESTIMATION OF IMPAIRMENT CORRELATIONS FOR RECEIVED SIGNAL PROCESSING 审中-公开
标题翻译：用于直接估计接收信号处理的相关关系的方法和装置
公开(公告)号：WO2010119031A1
公开(公告)日：2010-10-21
申请号：PCT/EP2010/054816
申请日：2010-04-13
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , JONSSON, Elias
发明人： JONSSON, Elias
IPC分类号： H04B1/707
CPC分类号： H04B1/712 , H04B2201/709727
摘要： According to the teachings disclosed in this document, a receiver estimates impairment correlations for a received signal using received pilot values. This direct estimation of impairment correlations based on direct pilot observations, provides for a rich capture of all impairment sources bearing on the received signal. Advantageously, however, estimation noise is reduced by generating a structured covariance matrix (106)- from the measured covariance matrix (102), and carrying out structured filtering within the structured covariance matrix (108). Structured filtering involves averaging matrix elements that correspond to the same processing delay difference as used for measured impairment correlation estimation. In one or more embodiments, averaged net channel estimates are used to obtain a rank one matrix (104), which is used to convert a measured covariance matrix to a structured covariance matrix, for carrying out structured filtering.
摘要翻译：根据本文件中公开的教导，接收机使用接收到的导频值来估计接收信号的损害相关性。这种基于直接导频观测的损伤相关性的直接估计提供了对接收信号的所有损伤来源的丰富捕获。然而，有利地，通过从所测量的协方差矩阵（102）生成结构化协方差矩阵（106）并且在结构化协方差矩阵（108）内执行结构化过滤来减小估计噪声。结构化滤波涉及平均矩阵元素，其对应于用于测量的损害相关估计的相同的处理延迟差。在一个或多个实施例中，使用平均净信道估计来获得秩一矩阵（104），其用于将测量的协方差矩阵转换为结构化协方差矩阵，以执行结构化过滤。

5. 发明申请

WO2008118064A3 MEASUREMENT OF CELL-SPECIFIC REFERENCE SYMBOLS IN THE PRESENCE OF MBMS SINGLE FREQUENCY NETWORK TRANSMISSIONS 审中-公开
标题翻译：在MBMS单频网络传输中测量细胞特异性参考符号
公开(公告)号：WO2008118064A3
公开(公告)日：2008-10-02
申请号：PCT/SE2008/050032
申请日：2008-01-11
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) , JADING, Ylva , JONSSON, Elias , PARKVALL, Stefan , DAHLMAN, Erik
发明人： JADING, Ylva , JONSSON, Elias , PARKVALL, Stefan , DAHLMAN, Erik
IPC分类号： H04L27/26
摘要： A network unit of an own cell is operated in a radio communication system utilizing a radio interface that includes a radio frame made up of a number of sub-frames. The own cell serves one or more user equipments. Operation includes obtaining information about a scheduling of MBSFN data transmissions in one or more neighboring cells. The information thereby obtained is used to generate an information signal that, for a given sub-frame, enables the one or more user equipments to determine whether neighboring cell measurements can be performed using a unicast group of Orthogonal Frequency Division Multiple access (OFDM) symbols. The information signal is transmitted to the one or more user equipments, which can then use the information to determine how to locate cell-specific reference symbols when doing measurements of neighboring cells.
摘要翻译：在使用包括由多个子帧组成的无线电帧的无线电接口的无线电通信系统中操作本小区的网络单元。自己的小区服务于一个或多个用户设备。操作包括获得关于一个或多个相邻小区中的MBSFN数据传输的调度的信息。由此获得的信息被用于生成信息信号，该信息信号对于给定的子帧使得一个或多个用户设备能够确定是否可以使用正交频分多址（OFDM）符号的单播组来执行邻近小区测量。信息信号被发送到一个或多个用户设备，随后可以使用该信息来确定在进行相邻小区的测量时如何定位小区特定的参考符号。

6. 发明申请

WO2008104466A2 METHOD AND APPARATUS FOR IMPAIRMENT CORRELATION ESTIMATION IN MIMO SYSTEMS 审中-公开
标题翻译：用于抑制MIMO系统中的相关估计的方法和装置
公开(公告)号：WO2008104466A2
公开(公告)日：2008-09-04
申请号：PCT/EP2008/051887
申请日：2008-02-15
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) , JONSSON, Elias , REIAL, Andres
发明人： JONSSON, Elias , REIAL, Andres
IPC分类号： H04B1/707 , H04B7/08
CPC分类号： H04W72/12 , H04B1/7103 , H04B1/712 , H04B7/0615 , H04B7/0669 , H04B7/0697 , H04B2201/70701 , H04B2201/709727 , Y02D70/40 , Y02D70/444
摘要： The teachings herein disclose methods and apparatus that simplify impairment correlation estimation for received signal processing, based on determining, for any given processing interval, which impairment contributors should be considered in the estimation of overall received signal impairment correlations. These simplifications reduce computational processing requirements, allowing reduced circuit complexity and/or reduced operating power, and improve receiver performance. A corresponding transmitter and transmission method include transmitting multiple information streams to targeted receivers according to ongoing scheduling, and controlling the ongoing scheduling to reduce the number of impairment contributors considered in impairment correlation estimation at the targeted receivers. In one embodiment, a receiver identifies which impairment contributors to consider based on receiving control information. In another embodiment, the receiver identifies the impairment contributors to consider based on background processing, e.g., background determination of parametric model fitting parameters for a plurality of impairment contributors, and observing those model fitting parameters over time.
摘要翻译：本文的教导公开了简化对接收信号处理的损害相关估计的方法和装置，其基于对于任何给定的处理间隔，在估计总体接收信号损害相关中应考虑哪些损害贡献者。这些简化减少了计算处理要求，从而降低了电路复杂度和/或降低了操作功率，并提高了接收机性能。相应的发射机和传输方法包括根据正在进行的调度向目标接收机发送多个信息流，并控制正在进行的调度，以减少目标接收机的损害相关估计中所考虑的损害贡献者的数量。在一个实施例中，接收机基于接收控制信息识别要考虑的损害贡献者。在另一个实施例中，接收机基于背景处理识别要考虑的损害贡献者，例如用于多个损害贡献者的参数模型拟合参数的背景确定，以及随着时间观察这些模型拟合参数。

7. 发明申请

WO2009074476A1 SPEED-BASED, HYBRID PARAMETRIC/NON-PARAMETRIC EQUALIZATION 审中-公开
标题翻译：基于速度，混合参数/非参数均衡
公开(公告)号：WO2009074476A1
公开(公告)日：2009-06-18
申请号：PCT/EP2008/066518
申请日：2008-12-01
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) , CAIRNS, Douglas A. , JONSSON, Elias , UESAKA, Kazuyoshi , WATABE, Hiroaki
发明人： CAIRNS, Douglas A. , JONSSON, Elias , UESAKA, Kazuyoshi , WATABE, Hiroaki
IPC分类号： H04B1/707
CPC分类号： H04B1/712 , H04B1/7097 , H04B2201/709727
摘要： A mobile receiver having a multi-mode interference suppression function and a way to estimate its speed utilizes a parametric approach to interference suppression at high speeds, and a nonparametric approach at low speeds. In particular, if the mobile receiver is currently operating in a nonparametric mode and its speed exceeds a first predetermined threshold, the mobile receiver switches to a parametric mode. Conversely, if the mobile receiver is currently in parametric mode and its speed is less than a second predetermined threshold, the mobile receiver switches to nonparametric mode. In one embodiment, the speed may be estimated by a Doppler frequency in the received signal, and the thresholds are Doppler frequencies. In one embodiment, the first and second thresholds are different, creating a hysteresis in the mode switching.
摘要翻译：具有多模式干扰抑制功能的移动接收机和估计其速度的方法利用高速干扰抑制的参数化方法和低速度的非参数方法。特别地，如果移动接收机当前正在以非参数模式操作并且其速度超过第一预定阈值，则移动接收机切换到参数模式。相反，如果移动接收机当前处于参数模式并且其速度小于第二预定阈值，则移动接收机切换到非参数模式。在一个实施例中，可以通过接收信号中的多普勒频率来估计速度，并且阈值是多普勒频率。在一个实施例中，第一和第二阈值是不同的，在模式切换中产生迟滞。

8. 发明申请

WO2008135393A1 METHOD AND APPARATUS FOR CORRECTING IQ IMBALANCE IN AN OFDM RECEIVER 审中-公开
标题翻译：用于校正OFDM接收机智能不平等的方法和装置
公开(公告)号：WO2008135393A1
公开(公告)日：2008-11-13
申请号：PCT/EP2008/054947
申请日：2008-04-23
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , JONSSON, Elias
发明人： JONSSON, Elias
IPC分类号： H04L27/38 , H04L27/26
CPC分类号： H04L27/2647 , H04L1/06 , H04L27/3863
摘要： Methods and apparatus for processing received OFDM signals to compensate for distortions caused by IQ imbalances are disclosed. Receiver circuits may be configured to demodulate symbols from a first logical channel, using an uncompensated received OFDM signal that includes the effects of those distortions. Receiver circuits may be further configured to calculate an IQ imbalance parameter, using the demodulated symbols, for use in compensating the received OFDM signal to reduce the effects of the IQ imbalances. The compensated signal produced thereby may be used for demodulating symbols from a second logical channel, perhaps corresponding to a user data channel.
摘要翻译：公开了用于处理接收的OFDM信号以补偿由IQ失衡引起的失真的方法和装置。接收器电路可以被配置为使用包括这些失真的影响的未补偿的接收OFDM信号来解调来自第一逻辑信道的符号。接收机电路还可以被配置为使用解调符号来计算IQ不平衡参数，以用于补偿接收的OFDM信号以减少IQ不平衡的影响。由此产生的补偿信号可以用于解调来自第二逻辑信道的符号，可能对应于用户数据信道。

9. 发明申请

WO2007090868A1 METHOD AND DEVICE FOR CHANNEL RESPONSE DETERMINATION 审中-公开
标题翻译：用于通道响应确定的方法和设备
公开(公告)号：WO2007090868A1
公开(公告)日：2007-08-16
申请号：PCT/EP2007/051222
申请日：2007-02-08
申请人： Telefonaktiebolaget LM Ericsson (publ) , JONSSON, Elias
发明人： JONSSON, Elias
IPC分类号： H04L25/02 , H04L27/26
CPC分类号： H04L27/2647 , H04B1/707 , H04L25/0204 , H04L25/0216 , H04L25/022 , H04L25/0236 , H04L25/0244
摘要： A method and a device for channel response determination for a wireless communication system. The method comprises generating a first vector of channel responses from channel estimations obtained by using a training signal. A second vector of regularized channel responses is generated by applying to the first vector a regularization algorithm. The algorithm is operative such that a second difference between consecutive regularized channel responses of the second vector is less than a first difference between consecutive channel responses of the first vector.
摘要翻译：一种用于无线通信系统的信道响应确定的方法和装置。该方法包括从通过使用训练信号获得的信道估计产生信道响应的第一矢量。通过将正则化算法应用于第一向量来生成正则化信道响应的第二向量。该算法的操作使得第二向量的连续正则化信道响应之间的第二个差值小于第一个向量的连续信道响应之间的第一个差值。

10. 发明申请

WO2006066648A1 SCALING IN A RECEIVER FOR CODED DIGITAL DATA SYMBOLS 审中-公开
标题翻译：在编码数字数据符号的接收器中进行分级
公开(公告)号：WO2006066648A1
公开(公告)日：2006-06-29
申请号：PCT/EP2005/011379
申请日：2005-10-21
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , CEDERGREN, Andreas , JONSSON, Elias
发明人： CEDERGREN, Andreas , JONSSON, Elias
IPC分类号： H04B1/707 , G06F7/52
CPC分类号： G06F7/49936 , G06F7/523 , H04B1/712 , H04B7/0842 , H04B2201/70707 , H04B2201/709727
摘要： Coded digital data symbols sent through a transmission channel of a communications network are received in a receiver. Estimates (y) represented by a first number (a+b) of bits are calculated, and modified estimates (y') represented by a second number (c) of bits provided therefrom, the second number being lower than the first number. An amplitude value is calculated for each estimate (y), and an averaged amplitude value calculated for a number of amplitude values. A scaling factor (s) is calculated from the averaged amplitude value, and scaled estimates generated in dependence of the scaling factor. The scaling factor is used for a number of scaled estimates corresponding to the number of amplitude values for which the averaged amplitude value was calculated. Thus a better scaling factor is provided for most channel cases, which can still be calculated with the limited computational resources of a terminal for such networks.
摘要翻译：通过通信网络的传输信道发送的编码数字数据符号在接收机中被接收。计算由第一数字（a + b）表示的估计（y），并且由由其提供的第二数量（c）表示的修改估计（y'），第二数目低于第一数目。对于每个估计（y）计算振幅值，并且对于振幅值的数量计算的平均振幅值。根据平均振幅值计算缩放因子，并根据缩放因子生成缩放估计值。缩放因子用于与计算平均振幅值的振幅值的数量相对应的多个缩放估计。因此，为大多数信道情况提供了更好的缩放因子，这仍然可以用这种网络的终端的有限的计算资源来计算。

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