公开(公告)号：US07848389B2

公开(公告)日：2010-12-07

申请号：US11219626

申请日：2005-09-02

申请人： Carmela Cozzo ,  Douglas A. Cairns ,  Gregory E. Bottomley ,  Ali S. Khayrallah ,  Håkan B. Eriksson

发明人： Carmela Cozzo ,  Douglas A. Cairns ,  Gregory E. Bottomley ,  Ali S. Khayrallah ,  Håkan B. Eriksson

IPC分类号： H04B1/69

CPC分类号： H04B1/7103 ,  H04B1/712 ,  H04B2201/709727 ,  H04L25/0212 ,  H04L25/0222 ,  H04L25/0228

摘要： A wireless communication receiver, such as the receiver included in a wireless communication transceiver implemented in a base station or in a mobile station of a wireless communication network, includes a parametric G-RAKE receiver circuit and a method that compute parametric scaling parameters on a per transmission interval basis. In one embodiment, measured impairment correlations are obtained for an individual transmission slot and used to estimate instantaneous values of the scaling parameters. One or both of those instantaneous values are then constrained according to one or more defined limits. In other embodiments, multiple transmission slots are used to increase the number of measurements available to estimate the scaling parameters, with parameter constraining optionally applied. Further embodiments use iterative methods and/or solve for one parameter, and use the results to obtain the other parameter(s). One or more of these embodiments can be improved through the use of error correction/detection information.

摘要翻译： 无线通信接收机，例如包括在基站或无线通信网络的移动台中的无线通信收发器中的接收机，包括参数化的G-RAKE接收机电路和一个在每一个中计算参数缩放参数的方法 传输间隔的基础。 在一个实施例中，针对单个传输时隙获得测量的损害相关性，并用于估计缩放参数的瞬时值。 然后根据一个或多个限定的限制来限制那些瞬时值中的一个或两个。 在其他实施例中，使用多个传输时隙来增加可用于估计缩放参数的测量数量，并且可选地应用参数约束。 另外的实施例使用迭代方法和/或解决一个参数，并且使用结果来获得其他参数。 可以通过使用错误校正/检测信息来改进这些实施例中的一个或多个。

公开(公告)号：US07382821B2

公开(公告)日：2008-06-03

申请号：US11626728

申请日：2007-01-24

申请人： Roozbeh Atarius ,  Torsten J. Carlsson ,  Håkan B. Eriksson ,  Kjell B. Gustafsson ,  Torgny Palenius ,  Christer Östberg

发明人： Roozbeh Atarius ,  Torsten J. Carlsson ,  Håkan B. Eriksson ,  Kjell B. Gustafsson ,  Torgny Palenius ,  Christer Östberg

IPC分类号： H04B1/00

CPC分类号： H04B1/7115 ,  H04B1/7093

摘要： A searcher uses an input signal, and for example, a matched filter to generate a first set of candidate paths. A selector uses the input signal and the first set of candidate paths to generate a second set of paths. The second set of paths is used to configure the fingers of a RAKE receiver. According to one aspect of the invention, the first set of candidate paths contains M paths, and the second stage uses M correlators to generate a set of M correlation values. The second stage uses the M correlation values to select N paths that are used to configure the N fingers of the RAKE receiver. According to another aspect of the invention, the first set of candidate paths contains M paths, and the second stage uses a multiple of M correlators to track the M paths and generate a set of M estimates. The second stage uses the M estimates to select N paths that are used to configure the N fingers of the RAKE receiver. According to another aspect of the invention, the selector can generate new sets of N paths while the searcher is either active or inactive. The receiver can use a quality signal or a counter to notify the searcher and/or the selector to generate new sets of paths. The selector decreases the need to continuously run the matched filter. The receiver can re-configure the fingers without having to search for new paths. The receiver can also find paths that are uncorrelated and less susceptible to fading.

摘要翻译： 搜索者使用输入信号，例如，匹配滤波器来生成第一组候选路径。 选择器使用输入信号和第一组候选路径来生成第二组路径。 第二组路径用于配置RAKE接收机的手指。 根据本发明的一个方面，第一组候选路径包含M个路径，第二阶段使用M个相关器来生成一组M个相关值。 第二级使用M个相关值来选择用于配置RAKE接收机的N个手指的N个路径。 根据本发明的另一方面，第一组候选路径包含M个路径，并且第二阶段使用多个M个相关器来跟踪M个路径并生成一组M个估计。 第二阶段使用M个估计来选择用于配置RAKE接收机的N个手指的N个路径。 根据本发明的另一方面，当搜索者处于活动或不活动状态时，选择器可以生成新的N个路径集合。 接收机可以使用质量信号或计数器来通知搜索者和/或选择器来生成新的路径集合。 选择器减少了连续运行匹配滤波器的需要。 接收机可以重新配置手指，而无需搜索新的路径。 接收机还可以找到不相关的路径，并且不易受衰落影响。

公开(公告)号：US06526035B1

公开(公告)日：2003-02-25

申请号：US09093315

申请日：1998-06-09

申请人： Roozbeh Atarius ,  Christer Östberg ,  Håkan B. Eriksson ,  Håkan Henningsson

发明人： Roozbeh Atarius ,  Christer Östberg ,  Håkan B. Eriksson ,  Håkan Henningsson

IPC分类号： H04B7216

CPC分类号： H04B1/707 ,  H04B7/2628

摘要： A receiver can identify the source of a signal from an unsynchronized source. The receiver has an antenna for receiving two signals. The receiver correlates the first signal with a code to find a first location in time, and correlates the second signal with the same code to find a second location in time. The receiver calculates a time difference between the first location in time and the second location in time and uses the time difference to identify the source of the two signals. A group of base stations or directional antennas use the same long code and synchronization codes. However, each source shifts the long code by a different amount so that for any two sources there is a unique difference between the shifts in the long code. Each source shifts a set of synchronization codes the same amount as the long code. The synchronization codes can be any short code that is relatively easy for the mobile station to detect. When the receiver receives the two signals, the receiver calculates the difference in the shifts. Because there is a unique difference for each pair of sources, the receiver can identify the source of a signal from an unsynchronized source without having to connect to the source to use a broadcast channel or control channel. The receiver can distinguish between different synchronized sources without any prior synchronization.

摘要翻译： 接收机可以识别来自不同步源的信号源。 接收器具有用于接收两个信号的天线。 接收器将第一信号与代码相关联以在时间上找到第一位置，并且将第二信号与相同代码相关以在时间上找到第二位置。 接收机计算时间上的第一位置和第二时间点之间的时间差，并使用时间差来识别两个信号的源。 一组基站或定向天线使用相同的长码和同步码。 然而，每个源将长码移动不同的量，使得对于任何两个源，长码中的移位之间存在唯一的差异。 每个源将一组同步码与长码相同。 同步码可以是移动台检测相对容易的任何短码。 当接收器接收到两个信号时，接收器计算出偏移量的差异。 因为每对源都有独特的差异，所以接收器可以识别来自不同步源的信号的源，而不必连接到源以使用广播信道或控制信道。 接收机可以区分不同的同步源，而无需任何先前的同步。

公开(公告)号：US06665282B1

公开(公告)日：2003-12-16

申请号：US09204359

申请日：1998-12-04

申请人： Håkan B. Eriksson ,  Martin J. Jonson ,  Kenzo Urabe

发明人： Håkan B. Eriksson ,  Martin J. Jonson ,  Kenzo Urabe

IPC分类号： H04Q700

CPC分类号： H04B1/7113 ,  H04B1/707 ,  H04B1/7093 ,  H04B1/7115 ,  H04B1/7117

摘要： A first searcher searches a first channel (e.g., a broadcast channel), a second searcher searches a second channel (e.g., a traffic channel), and the second searcher uses information from the first searcher to search the second channel. In one aspect of the invention, the first searcher generates a delay profile for the first channel. A second searcher uses the delay profile to generate a set of taps for the second channel. In another aspect of the invention, the first searcher is configured to find a maximum correlation value (or a set of maximum correlation values). The second searcher shifts a search finger by an amount equal to the delay corresponding to the maximum correlation value(s). The second searcher can also shift a code corresponding to the second signal by an amount equal to the sum of the delay corresponding to the maximum correlation value(s) and a predetermined value.

摘要翻译： 第一搜索者搜索第一频道（例如，广播频道），第二搜索者搜索第二频道（例如，业务信道），并且第二搜索者使用来自第一搜索者的信息来搜索第二频道。 在本发明的一个方面，第一搜索器产生用于第一信道的延迟分布。 第二搜索者使用延迟分布来生成用于第二信道的一组抽头。 在本发明的另一方面，第一搜索器被配置为找到最大相关值（或一组最大相关值）。 第二搜索者将搜索指针移动等于对应于最大相关值的延迟的量。 第二搜索器还可以将对应于第二信号的代码移位一个等于对应于最大相关值的延迟和一个预定值的总和的量。