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    REDUCED POWER MATCHED FILTER
    1.
    发明公开
    REDUCED POWER MATCHED FILTER 审中-公开
    省电信号的自适应滤波

    公开(公告)号：EP1133739A1

    公开(公告)日：2001-09-19

    申请号：EP99956632.6

    申请日：1999-10-21

    申请人： Ericsson Inc.

    发明人： DENT, Paul ,  URABE, Kenzo

    IPC分类号： G06F17/15

    CPC分类号： H04B1/70752 ,  G06F17/15 ,  H04B1/70751 ,  H04B1/7093 ,  H04B1/7095 ,  H04B2201/70707

    摘要： A matched filter for use in a radio telephone receiver that receives Code Division Multiple Access (CDMA) signals. The matched filter produces precombinations of input values to significantly reduce the number of multiplication and addition operations, compared to conventional matched filters, required to produce a correlation value. This reduced number of required operations, along with a reduced number of delay elements required to despread CDMA signals, significantly reduces the overall power consumption of the matched filter. The use of such a matched filter in a device like a cellular phone, for example, would thus lead to longer battery life.

    APPARATUS AND METHODS FOR FINGER DELAY SELECTION IN RAKE RECEIVERS
    3.
    发明公开
    APPARATUS AND METHODS FOR FINGER DELAY SELECTION IN RAKE RECEIVERS 有权
    DEVICE AND METHOD FOR分支延迟挑选RAKE接收机

    公开(公告)号：EP1344327A2

    公开(公告)日：2003-09-17

    申请号：EP01988345.3

    申请日：2001-12-18

    申请人： Ericsson Inc.

    发明人： WANG, Yi-Pin, Eric ,  BOTTOMLEY, Gregory, Edward ,  URABE, Kenzo

    IPC分类号： H04B1/707

    CPC分类号： H04B1/712 ,  H04B1/7117 ,  H04B2201/709727

    摘要： Methods of recovering information encoded in a spread spectrum signal transmitted according to a spreading sequence in a communications medium are provided in which a spread spectrum signal is received from the communications medium and correlated with a spreading sequence to produce a plurality of time-offset correlations. Some of these time-offset correlations may be designed to cancel out known interfering signals. A subset of the plurality of time-offsets may then be selected, and corresponding traffic correlations may then be combined using a weighted combination to estimate information encoded in the transmitted spread spectrum signal. Receivers for implementing these methods are also provided.