公开(公告)号：US08848762B2

公开(公告)日：2014-09-30

申请号：US13021438

申请日：2011-02-04

申请人： Elias Jonsson ,  Eric Blanquer ,  Kazuyoshi Uesaka

发明人： Elias Jonsson ,  Eric Blanquer ,  Kazuyoshi Uesaka

IPC分类号： H04B1/00 ,  H03K9/00

CPC分类号： H04B1/7097 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/7071

摘要： This disclosure is directed to a wireless receiver and a method for configuring the wireless receiver, comprising the actions of determining a geometry factor for a channel over which signals are transmitted to the wireless receiver, the geometry factor being a measure indicative of inter-cell interference plus noise power at the wireless receiver; determining the variance of the determined geometry factor, the variance being a measure indicative of the variation in time or rate of the geometry factor; and configuring the wireless receiver based on the geometry factor and the variance of the geometry factor.

摘要翻译： 本公开涉及一种用于配置无线接收机的无线接收机和方法，包括确定信号被传输到无线接收机的信道的几何因子的动作，几何因子是指示小区间干扰的度量 加上无线接收机的噪声功率; 确定确定的几何因子的方差，方差是指示几何因子的时间或速率变化的度量; 并基于几何因子和几何因子的方差来配置无线接收机。

公开(公告)号：US08520782B2

公开(公告)日：2013-08-27

申请号：US12971021

申请日：2010-12-17

申请人： Elias Jonsson ,  Göran Bergman ,  Srikanth Gopal

发明人： Elias Jonsson ,  Göran Bergman ,  Srikanth Gopal

IPC分类号： H01L27/06

CPC分类号： H04W52/0245 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/24

摘要： Methods and apparatus for controlling a receiver based on a received signal include receiving the signal; generating, based on a portion of the signal, a SIR estimate; comparing the SIR estimate and a threshold value; and demodulating a remaining portion of the signal only if the SIR estimate passes the threshold value.

摘要翻译： 基于接收信号控制接收机的方法和装置包括：接收信号; 基于信号的一部分产生SIR估计; 比较SIR估计和阈值; 以及仅当所述SIR估计通过所述阈值时才解调所述信号的剩余部分。

公开(公告)号：US08279743B2

公开(公告)日：2012-10-02

申请号：US11756172

申请日：2007-05-31

申请人： Elias Jonsson

发明人： Elias Jonsson

IPC分类号： H04J11/00 ,  H04B7/185 ,  H04B3/10 ,  H04B1/00

CPC分类号： H04L27/2647 ,  H04L5/023 ,  H04L25/0206 ,  H04L25/0228 ,  H04L27/261

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.

摘要翻译： 在OFDM通信系统接收机中，处理信道估计以消除或减少噪声，利用导频模式的正交性。 然后使用去噪信道估计来计算小区间干扰。 取决于数据副载波是否受到与导频子载波相同的干扰，以及数据副载波是否受到来自与导频模式正交的导频模式的扇区的干扰，从而在估计小区间干扰中从信道样本中选择性地去除正交导频模式的噪声影响 那些在传输部门。 进一步的计算消除了未被正交导频序列识别的小区的噪声，当通过导频模式的传播信道的频域存在大的变化时，这可能特别适用。

公开(公告)号：US08144749B2

公开(公告)日：2012-03-27

申请号：US12198973

申请日：2008-08-27

申请人： Douglas A. Cairns ,  Elias Jonsson ,  Anders Rosenqvist ,  Andres Reial ,  Stephen Grant

发明人： Douglas A. Cairns ,  Elias Jonsson ,  Anders Rosenqvist ,  Andres Reial ,  Stephen Grant

IPC分类号： H04B1/707 ,  H04L1/06

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： 使用非参数G-Rake接收机，可以使用多输入多输出（MIMO）场景中的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。 更具体地说，在存在码重用干扰项的MIMO场景中，基于使用非参数机制的导频信道来计算损害协方差矩阵。 针对非参数G-Rake接收机响应于损害协方差矩阵并通过计算代码重用干扰项来确定组合权重。

公开(公告)号：US08068532B2

公开(公告)日：2011-11-29

申请号：US11721582

申请日：2005-10-21

申请人： Andreas Cedergren ,  Elias Jonsson

发明人： Andreas Cedergren ,  Elias Jonsson

IPC分类号： H04B1/00 ,  H04L7/00 ,  H04N7/173

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 form the averaged amplitude value, and scaled estimates generated in dependence of die 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，并且针对振幅值的数量计算平均振幅值。 根据平均振幅值计算缩放因子，并根据缩放因子产生缩放估计。 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。

公开(公告)号：US08064497B2

公开(公告)日：2011-11-22

申请号：US12065508

申请日：2006-08-31

申请人： Elias Jonsson ,  Mårten Myrehed

发明人： Elias Jonsson ,  Mårten Myrehed

IPC分类号： H04B1/00

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 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 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 (P1, P2, 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分布。 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。 确定组合延迟分布中的峰值的延迟值，并从组合的延迟分布中选择包括最大峰值的峰值延迟值（P1，P2，P）的数目。 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。

公开(公告)号：US08059739B2

公开(公告)日：2011-11-15

申请号：US11446734

申请日：2006-06-05

申请人： Elias Jonsson

发明人： Elias Jonsson

IPC分类号： H04L5/12

CPC分类号： H04B7/0413 ,  H04B1/71075 ,  H04L1/005 ,  H04L1/0066 ,  H04L1/0631 ,  H04L1/08 ,  H04L1/1812

摘要： A wireless communication device corrects data transmission errors caused by the simultaneous transmission of multiple streams of data in a Multiple-Input Multiple-Output (MIMO) network. The wireless communication device corrects data transmission errors by removing the signal contribution associated with one or more received signal components from a corresponding received composite signal, thus allowing the remaining components to be decoded relatively free from the signal contribution of the removed components. In one embodiment, the wireless communication device comprises a plurality of antennas and a baseband processor. The antennas are configured to receive a composite signal having a plurality of received signal components. The baseband processor is configured to obtain decoding quality metrics for individual ones of the received signal components, form regenerated received signal components for the received signal components having satisfactory decoding quality metrics, and remove the regenerated received signal components from the received composite signal.

摘要翻译： 无线通信设备校正由多输入多输出（MIMO）网络中的多个数据流的同时传输引起的数据传输错误。 无线通信设备通过从相应的接收到的复合信号中去除与一个或多个接收信号分量相关联的信号贡献来校正数据传输错误，从而允许其余部件被解码为相对于去除的部件的信号贡献。 在一个实施例中，无线通信设备包括多个天线和基带处理器。 天线被配置为接收具有多个接收信号分量的复合信号。 基带处理器被配置为获得用于接收信号分量中的各个信号分量的解码质量度量，形成具有令人满意的解码质量度量的接收信号分量的再生接收信号分量，以及从接收到的复合信号中去除再生的接收信号分量。

公开(公告)号：US07916773B2

公开(公告)日：2011-03-29

申请号：US11858548

申请日：2007-09-20

申请人： Xiaohui Wang ,  Elias Jonsson ,  Andreas Cedergren

发明人： Xiaohui Wang ,  Elias Jonsson ,  Andreas Cedergren

IPC分类号： H04B1/00

CPC分类号： H04B1/7115 ,  H04B1/712

摘要： A method and a receiver for receiving coded digital data symbols sent from a transmitter through a transmission channel of a communications network is adapted to calculate first symbol estimates (y) of sent data symbols from the received data symbols, each of the first symbol estimates (y) having a first bitwidth (a+b), provide a scaling factor (s) and using the scaling factor (s) to scale the first symbol estimates, truncate the scaled symbol estimates (ysc) to a second, lower bitwidth (c) and thereby providing second symbol estimates (yt).

摘要翻译： 一种用于接收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的方法和接收机，适于从所接收的数据符号中计算所发送的数据符号的第一符号估计（y），每个第一符号估计（ 具有第一位宽（a + b））提供缩放因子并使用缩放因子来缩放第一符号估计，将缩放的符号估计（ysc）截断为第二，较低位宽（c ），从而提供第二符号估计（yt）。

公开(公告)号：US20100260237A1

公开(公告)日：2010-10-14

申请号：US12423480

申请日：2009-04-14

申请人： Elias Jonsson

发明人： Elias Jonsson

IPC分类号： H04J13/04 ,  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 from the measured covariance matrix, and carrying out structured filtering within the structured covariance matrix. 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, 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，有利的是，通过从所测量的协方差矩阵生成结构化协方差矩阵，并在结构化协方差矩阵内进行结构化滤波来减小估计噪声。 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，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。

公开(公告)号：US07715464B2

公开(公告)日：2010-05-11

申请号：US10595115

申请日：2004-07-10

申请人： Elias Jonsson ,  Roger Persson

发明人： Elias Jonsson ,  Roger Persson

IPC分类号： H04B1/00

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。