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    Multi-mode receiver with adaptive mode selection
    65.
    发明授权
    Multi-mode receiver with adaptive mode selection 有权
    Multimodus-Empfängermit adaptor Modusauswahl

    公开(公告)号：EP1953925B1

    公开(公告)日：2009-11-04

    申请号：EP07101765.1

    申请日：2007-02-05

    Applicant: Research In Motion Limited

    Inventor： Wu, Huan ,  Simmons, Sean

    IPC: H04B7/08

    CPC classification number: H04B7/0854 ,  H04L1/0631 ,  H04L27/0008 ,  Y02D70/1222 ,  Y02D70/1224 ,  Y02D70/1226 ,  Y02D70/144 ,  Y02D70/444

    Abstract: Receivers and methods are provided that include multiple modes of processing signals from multiple antennas. These include legacy, SAIC (single antenna interference cancellation) and MSRD. Various methods are provided for selecting an appropriate receiver processing function. These include looking at correlation and gain imbalance between antennas, looking at the processing gain resulting from one or more of the receiver processing functions, and looking at the equalization quality of at least two receiver processing functions.

    Abstract translation: 提供了包括来自多个天线的多种处理信号模式的接收机和方法。 这些包括传统，SAIC（单天线干扰消除）和MSRD。 提供了用于选择适当的接收机处理功能的各种方法。 这些包括观察天线之间的相关性和增益不平衡，观察由一个或多个接收机处理功能产生的处理增益，以及观察至少两个接收机处理功能的均衡质量。

    DATA EQUALISATION IN A COMMUNICATION RECEIVER WITH RECEIVE DIVERSITY
    66.
    发明公开
    DATA EQUALISATION IN A COMMUNICATION RECEIVER WITH RECEIVE DIVERSITY 审中-公开
    在通信接收器接收分集数据相等

    公开(公告)号：EP2100388A1

    公开(公告)日：2009-09-16

    申请号：EP07850840.5

    申请日：2007-12-12

    Applicant: NEC Corporation

    Inventor： YUAN, Allen ,  BUI, Thanh ,  HE, Holly

    IPC: H04B7/08 ,  H04B7/005

    CPC classification number: H04B7/0854 ,  H04B7/0845 ,  H04L25/0204 ,  H04L25/021 ,  H04L25/0244 ,  H04L25/0256 ,  H04L25/03044 ,  H04L2025/03426

    Abstract: A method of performing data equalization in a communication receiver forming part of a communication system with receive diversity is provided. The method comprises (a) for each ith antenna, calculating a channel response matrix Hi from multi-path channel estimates, (b) calculating a channel gain matrix G from the channel response matrices Hi and a scalar noise factor β, (c) calculating the middle column co of the inverse G-1 of the channel gain matrix G, (d) for each i-th antenna, calculating a filter coefficient vector wi from the middle column c0 of the inverse G-1 of the channel gain matrix G and the Hermitian transpose HiH of the corresponding channel response matrix Hi, (e) filtering input data ri received at each i-th antenna with the corresponding filter coefficient vector wi, (f) despreading the filtered input data from each i-th antenna, and (g) combining the despread data from all antennas to obtain received equalised data.

    ADVANCED WHITENER-RAKE RECEIVER FOR WCDMA TERMINAL
    67.
    发明授权
    ADVANCED WHITENER-RAKE RECEIVER FOR WCDMA TERMINAL 有权
    改进增白剂RAKE接收机一个WCDMA终端

    公开(公告)号：EP1639725B1

    公开(公告)日：2009-07-29

    申请号：EP04743754.6

    申请日：2004-06-09

    Applicant: Nokia Corporation

    Inventor： HEIKKILA, Markku, J. ,  LILLEBERG, Jorma

    IPC: H04B7/216 ,  H04B1/707

    CPC classification number: H04B7/0894 ,  H04B1/7097 ,  H04B1/7115 ,  H04B7/0854

    Abstract: A CDMA receiver (10) includes a receiver input for coupling to signal outputs of Nrx receive antennas (20A,20B), where the signal outputs are sampled at Ns samples per symbol or chip, a matched filter (14), such as a RAKE, and a whitening filter (20) for coupling the receiver input to an input of the matched filter. The whitening filter contains NsNrx parallel whitening filters wj,k (22A-22D), individual ones of the whitening filters wj,k receiving during each symbol interval i, NsNrx new signal samples via a signal connection matrix (28) such that a first individual whitening filter receives only one of the new samples, a second individual whitening filter receives the same sample as the first individual whitening filter, and one additional sample, and such that an nth individual whitening filter receives the same n-1 samples as the first n-1 individual whitening filters, plus one of the remaining samples. The whitening filter has Nrx outputs for outputting filtered signal samples such that a filtered signal sample appearing in the Nrx outputs does not correlate with any other filtered signal sample appearing in Nrx outputs. The whitening filter also includes a delay line (30) constructed as a plurality of serially coupled delay line elements each having a delay of one symbol interval. The delay line has an input coupled to an output of said signal connection matrix and provides the NsNrx parallel whitening filters wj,k with delayed versions of the signal samples.

    MIMO wireless communication systems
    68.
    发明公开
    MIMO wireless communication systems 审中-公开
    Drahtlose MIMO-Kommunikationssysteme

    公开(公告)号：EP2051400A2

    公开(公告)日：2009-04-22

    申请号：EP08163447.9

    申请日：2008-09-01

    Applicant: Fujitsu Ltd.

    Inventor： Hunukumbure, Mythri

    IPC: H04B7/04

    CPC classification number: H04B7/0413 ,  H04B7/0617 ,  H04B7/0686 ,  H04B7/0697 ,  H04B7/0854 ,  H04B7/0868

    Abstract: There is provided a wireless communication method for use in a MIMO system, the system having a first cell adjacent to one or more second cells, each cell being served by a base station and having a plurality of fixed or mobile subscriber stations, and each base station having MIMO channels between its cell and each subscriber station in its cell, the method comprising: recognising an opportunity for a reduction of interference experienced between a particular subscriber station in a particular said second cell and the base station of the first cell; selecting as the basis of interference reduction a rank deficient MIMO channel amongst the MIMO channels between the base station of the first cell and each subscriber station in the first cell; and applying post-coding to transmissions on the selected MIMO channel, where the selected MIMO channel is an uplink channel, or on a MIMO uplink channel corresponding to the selected MIMO channel, where the selected MIMO channel is a downlink channel, to reduce the interference experienced by the base station of the first cell.

    Abstract translation: 提供了一种在MIMO系统中使用的无线通信方法，该系统具有与一个或多个第二小区相邻的第一小区，每个小区由基站服务并具有多个固定或移动用户台，并且每个基站 该小区在其小区和其小区中的每个用户站之间具有MIMO信道，所述方法包括：识别用于减少特定所述第二小区中的特定用户台与所述第一小区的基站之间经历的干扰的机会; 在所述第一小区的基站和所述第一小区中的每个用户台之间选择所述MIMO信道中的秩缺陷MIMO信道的干扰减少的基础; 以及将所选择的MIMO信道（其中所选择的MIMO信道是上行链路信道）或在所选择的MIMO信道是下行链路信道的所选MIMO信道对应的MIMO上行链路信道上应用后置编码，以减少干扰 经历了第一个小区的基站。

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