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1. 发明申请

WO2004019576A1 RECEIVER AND METHOD FOR DECODING OF TRUNCATED DATA 审中-公开
标题翻译：接收器和解交换数据的方法
公开(公告)号：WO2004019576A1
公开(公告)日：2004-03-04
申请号：PCT/EP2003/007119
申请日：2003-07-03
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , CEDERGREN, Andreas , ÖSTBERG, Christer , JONSSON, Elias , LINDE, Jonas
发明人： CEDERGREN, Andreas , ÖSTBERG, Christer , JONSSON, Elias , LINDE, Jonas
IPC分类号： H04L25/02
CPC分类号： H04L1/0047 , H04L1/20 , H04L25/0202
摘要： Coded digital data symbols sent from a transmitter through a transmission channel of a communications network are received in a receiver. An estimate, represented by a first number of bits, of a sent data symbol is calculated, and a second number of bits, lower than the first number, is selected from the estimate to achieve a rounded estimate represented by the second number of bits. The rounded estimate is decoded to achieve a decoded data symbol. A target value for a block error rate of the transmission channel is received from the network; and the second number of bits is selected in dependence on the target block error rate value. Thus an optimal rounded estimate is provided in most situations, and the method can be performed with the limited computational resources of a terminal.
摘要翻译：通过通信网络的传输信道从发射机发送的编码数字数据符号被接收在接收机中。计算由发送数据符号的第一位数表示的估计，并且从估计中选择低于第一数目的第二数目的比特，以实现由第二比特数表示的舍入估计。舍入的估计被解码以实现解码的数据符号。从网络接收传输信道的块错误率的目标值; 并且根据目标块错误率值选择第二位数。因此，在大多数情况下提供了最佳舍入估计，并且该方法可以用终端的有限计算资源来执行。

2. 发明申请

WO2010097380A1 ESTIMATING THE RATIO OF TRAFFIC CHANNEL POWER TO PILOT POWER IN A MIMO WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：在MIMO无线通信系统中估计交通通道功率的比率
公开(公告)号：WO2010097380A1
公开(公告)日：2010-09-02
申请号：PCT/EP2010/052261
申请日：2010-02-23
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , CEDERGREN, Andreas , JONSSON, Elias
发明人： CEDERGREN, Andreas , JONSSON, Elias
IPC分类号： H04B7/04
CPC分类号： H04B7/0413
摘要： Methods and apparatus for processing a received multi-stream (MIMO) signal, and in particular for estimating a per-code traffic-channel-to-pilot power ratio for the MIMO signal are disclosed. An exemplary method includes the calculation of an average symbol amplitude or average symbol power level from a plurality of de-spread traffic channel symbols received in a first transmission slot and the estimation of a corresponding pilot symbol amplitude or pilot symbol power level, based on an estimated propagation channel response and at least one of a plurality of precoding vectors used to generate the MIMO signal. A per-code traffic-channel-to-pilot power ratio for the first transmission slot is computed by dividing the average symbol amplitude or average symbol power level by the corresponding pilot symbol amplitude or pilot symbol power level.
摘要翻译：公开了用于处理接收的多流（MIMO）信号的方法和装置，特别是用于估计MIMO信号的每代码业务信道到导频功率比的方法和装置。一种示例性方法包括：基于在第一传输时隙中接收的多个解扩业务信道符号中的平均符号幅度或平均符号功率电平的计算，以及相应导频符号幅度或导频符号功率电平的估计，估计的传播信道响应以及用于生成MIMO信号的多个预编码矢量中的至少一个。通过将平均符号幅度或平均符号功率电平除以相应的导频符号幅度或导频符号功率电平来计算用于第一传输时隙的每代码业务信道到导频功率比。

3. 发明申请

WO2008141822A1 METHOD AND APPARATUS FOR REMOVING PILOT CHANNEL AMPLITUDE DEPENDENCIES FROM RAKE RECEIVER OUTPUT 审中-公开
标题翻译：用于从RAKE接收机输出端去除导频信道增益相关的方法和装置
公开(公告)号：WO2008141822A1
公开(公告)日：2008-11-27
申请号：PCT/EP2008/004086
申请日：2008-05-21
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , JONSSON, Elias , CEDERGREN, Andreas
发明人： JONSSON, Elias , CEDERGREN, Andreas
IPC分类号： H04B1/707
CPC分类号： H04B1/712 , H04B2201/70701
摘要： A receiver utilizes pilot channel propagation channel estimates and a signal-to- interference metric derived from the pilot channel to form combining weights for use in obtaining soft symbols from a desired channel for subsequent decoding. The soft symbols thus obtained are substantially independent of the pilot channel amplitude.
摘要翻译：接收机利用导频信道传播信道估计和从导频信道导出的信号与干扰度量来形成组合权重，用于从期望信道获得软符号用于后续解码。如此获得的软符号基本上与导频信道振幅无关。

4. 发明申请

WO2007025749A2 SELECTING DELAY VALUES FOR A RAKE RECEIVER 审中-公开
标题翻译：选择RAKE RECEIVER的延迟值
公开(公告)号：WO2007025749A2
公开(公告)日：2007-03-08
申请号：PCT/EP2006/008514
申请日：2006-08-31
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , JONSSON, Elias , MYREHED, Mårten
发明人： JONSSON, Elias , MYREHED, Mårten
IPC分类号： H04B1/707
CPC分类号： H04B1/7113 , H04B1/7117 , H04B2201/70702 , H04B2201/70707 , H04B2201/709727
摘要： Multipath components of transmitted data symbols are received with individual delays and processed by a RAKE having a number of fingers. A delay profile (31 ) indicating magnitudes for a first number of delay values is provided. Estimated magnitudes for a second number of delay values located between the first number of delay values are calculated by interpolation, and a combined delay profile (32) is provided by combining the magnitudes for the first and second number of delay values. Delay values for peaks in the combined delay profile are determined, and a number of peak delay values (P 1 , P 2 , P) comprising the largest peak are selected from the combined delay profile. At least some of the selected peak delay values are provided to the RAKE and assigned to the fingers. This allows a reduction of current consumption and dye area, while still providing delay values with sufficient resolution for the RAKE.
摘要翻译：所传输的数据符号的多路径分量被接收具有单独的延迟并由具有多个指状物的RAKE处理。提供了指示第一数量的延迟值的幅度的延迟曲线（31）。通过内插计算位于第一数量的延迟值之间的第二数量的延迟值的估计幅度，并且通过组合第一和第二数量的延迟值的幅度来提供组合的延迟分布（32）。确定组合延迟分布中的峰值的延迟值，并且包括最大峰值的峰值延迟值（P 1 SUB，P 2，P）的数目从组合延迟轮廓。所选择的峰值延迟值中的至少一些被提供给RAKE并被分配给手指。这允许减少电流消耗和染色面积，同时仍然为RAKE提供足够的分辨率的延迟值。

5. 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。

6. 发明申请

WO2005020458A1 POSITIONING OF A PATH SEARCHER WINDOW IN A CDMA RECEIVER 审中-公开
标题翻译： CDMA接收机中路径搜索器窗口的定位
公开(公告)号：WO2005020458A1
公开(公告)日：2005-03-03
申请号：PCT/EP2004/007626
申请日：2004-07-10
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , JONSSON, Elias , PERSSON, Roger
发明人： JONSSON, Elias , PERSSON, Roger
IPC分类号： H04B1/707
CPC分类号： H04B1/70754 , H04B1/70735 , H04B1/7113 , H04B1/7117 , H04B2201/70702
摘要： Multipath components of signals transmitted through time-varying digital radio channels are received with individual delays, and signals through a given channel comprise a code identifying that channel. A delay profile indicating a magnitude (Y) for delay values in a search window is calculated repetitively for known channels; the delays of multipath components for known channels estimated; a signal strength indicator calculated; and a search for new multipath components not already estimated performed at regular time intervals. When a new multipath component is found, its identification code is compared to the codes of the known channels. If the code of the new component is identical to the code of a known channel, a delay profile and a signal strength indicator is calculated for a window transposed to include the new multipath component. In this way as many multipath components as possible are included in the search window for a new cell.
摘要翻译：通过时变数字无线电信道发送的信号的多径分量被接收具有单独的延迟，并且通过给定信道的信号包括识别该信道的码。对已知通道重复地计算指示搜索窗口中的延迟值的幅度（Y）的延迟分布; 估计已知信道的多路径分量的延迟; 计算信号强度指标; 并搜索未定时执行的新的多径分量。当找到新的多径分量时，将其识别码与已知信道的码进行比较。如果新组件的代码与已知通道的代码相同，则为转置以包括新的多路径分量的窗口计算延迟分布和信号强度指示符。以这种方式，尽可能多的多径分量被包括在新单元的搜索窗口中。

7. 发明申请

WO2010112414A1 AUTOMATIC GAIN CONTROL IN MULTI-CARRIER WIRELESS SYSTEMS 审中-公开
标题翻译：多载波无线系统中的自动增益控制
公开(公告)号：WO2010112414A1
公开(公告)日：2010-10-07
申请号：PCT/EP2010/053977
申请日：2010-03-26
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , JONSSON, Elias , DANIELSSON, Niclas
发明人： JONSSON, Elias , DANIELSSON, Niclas
IPC分类号： H03G3/20 , H03G3/30
CPC分类号： H03G3/3078 , H03G3/3068
摘要： Methods and apparatus for providing automatic gain control (AGC) for received multi-carrier signals are disclosed. A receiver circuit comprises a common analog signal path, which includes an analog variable-gain circuit and an analog-to-digital converter, and further comprises first and second carrier-specific, digital variable-gain circuits corresponding to first and second carriers of the received multi-carrier signal, respectively. The receiver circuit further includes a gain control circuit configured to control the analog and digital variable- gain circuits and to allot gain adjustments to the analog variable-gain circuit based on a difference between carrier signal levels for the first and second carriers. In some embodiments, the gain control circuit selectively operates in an all-carrier mode, in which analog gain adjustments are calculated from both of the carrier signal levels, or in an unequal-priority mode, in which analog gain adjustments are calculated from only one of the first and second carrier signal levels.
摘要翻译：公开了用于为接收的多载波信号提供自动增益控制（AGC）的方法和装置。接收器电路包括公共模拟信号路径，其包括模拟可变增益电路和模数转换器，并且还包括对应于第一和第二载波的第一和第二载波特定的数字可变增益电路分别接收多载波信号。接收器电路还包括增益控制电路，其被配置为基于第一载波和第二载波的载波信号电平之间的差异来控制模拟和数字可变增益电路并且向模拟可变增益电路分配增益调整。在一些实施例中，增益控制电路选择性地以全载波模式操作，其中从两个载波信号电平或不等优先级模式计算模拟增益调整，其中仅从一个模式增益调整的第一和第二载波信号电平。

8. 发明申请

WO2008145337A3 A METHOD FOR INTERFERENCE ESTIMATION FOR ORTHOGONAL PILOT PATTERNS 审中-公开
公开(公告)号：WO2008145337A3
公开(公告)日：2008-12-04
申请号：PCT/EP2008/004196
申请日：2008-05-27
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , JONSSON, Elias
发明人： JONSSON, Elias
IPC分类号： H04L5/02 , H04L27/26
摘要： In an OFDM communications system receiver, channel estimates are processed to remove or reduce noise, exploiting the orthogonality of pilot patterns. The de-noised channel estimates are then used to compute inter-cell interference. The noise effects of orthogonal pilot patterns are selectively removed from channel samples in estimating inter-cell interference, depending on whether data subcarriers are subject to the same interference as pilot subcarriers, and whether data subcarriers are subject to interference from sectors with pilot patterns orthogonal to those in the transmitting sector. A further calculation removes noise from cells not identified by an orthogonal pilot sequence, which may be particularly applicable when large variations exist in the frequency domain of the propagation channel across a pilot pattern.

9. 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。

10. 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。

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