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    3.
    发明专利
    未知

    公开(公告)号：BR9709149A

    公开(公告)日：1999-08-03

    申请号：BR9709149

    申请日：1997-12-19

    Applicant: MOTOROLA INC

    Inventor： BIRCHLER MARK A ,  JONES DEBRA A ,  OROS NICHOLAS C

    IPC: G01S5/00 ,  G01C21/20 ,  G01S1/04 ,  G01S5/06 ,  G01S19/03 ,  H04B7/26 ,  H04W64/00 ,  A01B69/00

    Abstract: Signals exchanged between a fixed infrastructure (110-116) and a mobile unit (160) give rise to M channel quality metrics. The channel quality metrics are mapped, via predetermined relationships (501-503), in to M corresponding time of arrival variances, which in turn are used to derive M-1 time of arrival differential variances. A time of arrival differential weighting matrix including, in part, the time of arrival differential variances, is used to calculate a WLS solution, which solution is an estimate of a location of the mobile unit. This procedure may be implemented using an infrastructure-based location processor (130) operating in conjunction with the mobile unit, or may be performed by either the location processor or mobile unit alone.

    METHOD AND APPARATUS FOR USING A PSEUDO-RANDOM SIGNAL IN A COMMUNICATION SYSTEM
    6.
    发明公开
    METHOD AND APPARATUS FOR USING A PSEUDO-RANDOM SIGNAL IN A COMMUNICATION SYSTEM 审中-公开
    VERFAHREN UNDGERÄTZUR VERWENDUNG EINES PSEUDO-ZUFÄLLIGEN信号在EINEM KOMMUNIKATIONSSYSTEM

    公开(公告)号：EP1105980A4

    公开(公告)日：2004-03-03

    申请号：EP99939708

    申请日：1999-08-06

    Applicant: MOTOROLA INC

    Inventor： JASPER STEVEN C ,  BIRCHLER MARK A ,  JONES DEBRA A ,  OROS NICHOLAS C

    IPC: G01S5/14 ,  G01S11/02 ,  G01S19/06 ,  G01S19/25 ,  H04B7/216

    CPC classification number: G01S5/0221 ,  G01S5/14 ,  G01S11/02 ,  G01S2205/007

    Abstract: The figure shows a base site (104) generating a pseudo-random signal based on at least one system parameter known to both the base site (104) and a communication unit (112). The base site transmitter (106) then transmits the pseudo-random signal to the communication unit via an idle communication resource (102). Upon receiving the pseudo-random signal by the receiver (114) of the communication unit (112) determines at least one characteristic of the idle communication resource (102) using the pseudo-random signal.

    Abstract translation: 基站（104）基于基站和通信单元（112）已知的至少一个系统参数产生伪随机信号。 基站（104）然后经由空闲通信资源（102）将伪随机信号发送到通信单元。 在接收到伪随机信号时，通信单元（112）使用伪随机信号确定空闲通信资源（102）的至少一个特性。

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