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    SEARCHING FOR SIGNALS IN A COMMUNICATIONS SYSTEM
    6.
    发明授权
    SEARCHING FOR SIGNALS IN A COMMUNICATIONS SYSTEM 有权
    信号搜索中的通信系统

    公开(公告)号：EP1323242B1

    公开(公告)日：2008-04-16

    申请号：EP01986378.6

    申请日：2001-09-25

    申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ)

    发明人： CARLSSON, Torsten ,  GUSTAFSSON, Kjell ,  ATARIUS, Roozbeh ,  ERIKSSON, Håkan ,  ÖSTBERG, Christer ,  PALENIUS, Torgny

    IPC分类号： H04B1/707

    CPC分类号： H04B1/70758 ,  H04B1/70757 ,  H04B1/712

    摘要： A method and system enable matched filters of a CDMA system to be simplified using a two stage search. A course stage and a fine stage jointly produce the locations(s) of received signal path-rays. In a first stage, an oversampled digital signal (240) is decimated, and the decimated signal (415) is applied to a matched filter (420) to eventually produce an approximate location (460). In a second stage, the oversampled signal (240) is shifted based on the determined approximate location (460) and then correlated to a generated code (440), and a more-exact location is selected from the outputs of the correlations (450). Alternatively, a shifted version of the generated code (440) is correlated to the oversampled signal (240), and the more-exact location is selected from the outputs of those correlations (450).

    Device and method for communication between base station and subscriber unit in CDMA communication system
    7.
    发明公开
    Device and method for communication between base station and subscriber unit in CDMA communication system 失效
    装置和方法用于在基站和用户单元的CDMA通信系统中的通信

    公开(公告)号：EP1814242A2

    公开(公告)日：2007-08-01

    申请号：EP07009971.8

    申请日：1997-06-23

    申请人： INTERDIGITAL TECHNOLOGY CORPORATION

    发明人： Ozluturk, Fatih ,  Lomp, Gary R. ,  Haim, John W.

    IPC分类号： H04B7/005

    CPC分类号： H04W52/60 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/70707 ,  H04B2201/7071 ,  H04W52/36 ,  H04W52/362 ,  H04W52/367 ,  H04W52/50

    摘要： The present invention provides a base station for controlling transmission power during the establishment of communications between a base station and another communicating unit, comprising means for detecting a signal having an initial predetermined power level, which is repeatedly sent to the base station wherein each repeatedly sent signal is sent to the base station at an increased power level; means for transmitting a power control signal when a signal having a sufficient power for detection is received; means for receiving an access signal having a power level controlled by said power control signal; and wherein said signal comprises a short code and said access signal comprises an access code, which is longer than the short code.

    摘要翻译： 本发明提供了一种基站，用于在基站与另一通信单元之间建立通信的过程中控制发送功率，包括用于检测具有在初始预定功率电平反复地发送给基站worin每个重复发送的信号，所有的 信号在以增加的功率电平被发送到所述基站; 装置，用于发送功率控制信号。当接收到具有用于检测的足够的功率的信号; 装置，用于在具有由所述功率控制信号控制的功率水平访问信号接收; 和worin所述的信号包括短码和所述访问的访问代码信号包括，所有这些比短码长。