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    DC-CDMA SYSTEM WITH HIGH RESOLUTION TIMING
    2.
    发明专利
    DC-CDMA SYSTEM WITH HIGH RESOLUTION TIMING 未知

    公开(公告)号：AU2002363980A1

    公开(公告)日：2003-07-24

    申请号：AU2002363980

    申请日：2002-12-10

    Applicant: MOTOROLA INC

    Inventor： SHI QICAI ,  O'DEA ROBERT J

    IPC: H04B1/709 ,  H04B15/00 ,  H04K1/00 ,  H04L27/30

    Abstract: A method and apparatus for DS-CDMA communication having improved timing resolution. In the transmitter, a signal spread by a first sequence of pulses is generated with pulse shape given bywhere t is time and Tc is the chip period or pulse width. The pulses have an auto-correlation functionIn receiver, a second sequence of pulses with pulse shape given byis generated. When correlated with the first sequence of pulses the resulting correlation function is proportional toThis correlation function narrower peaks than the correlation functionthereby allowing higher time resolution to be achieved. The correlation function is achieved by modification of the transmitter or receiver modulation sequences or by modification of the correlator in the receiver.

    Radio with peak power and bandwidth efficient modulation
    3.
    发明专利
    Radio with peak power and bandwidth efficient modulation 未知

    公开(公告)号：GB2317795B

    公开(公告)日：1999-10-20

    申请号：GB9726272

    申请日：1996-05-23

    Applicant: MOTOROLA INC

    Inventor： MILLER SCOTT L ,  O'DEA ROBERT J

    IPC: H04L27/18 ,  H04B1/04 ,  H04L27/20 ,  H04L27/34 ,  H04L27/36

    Abstract: A communication device (300) includes a digital modulator (301), a Digital Signal Processor (306), and an amplifier (312). The digital modulator (301) includes an information generator (304) and a peak suppression device (402). The peak suppression device (402) includes a symbol mapper (404) and a symbol scaler (406). The information generated by the generator (401) are mapped on a constellation diagram via the symbol mapper (404). The mapped information is then scaled at the scaler (406) in order to reduce the peak-to-average ratio of the signal at the input to the amplifier (312).

    4.
    发明专利
    未知

    公开(公告)号：AT365357T

    公开(公告)日：2007-07-15

    申请号：AT03721985

    申请日：2003-05-01

    Applicant: MOTOROLA INC

    Inventor： PERKINS MATTHEW R ,  O'DEA ROBERT J ,  JOHNSON MARK J ,  PATWARI NEAL K

    IPC: G08B25/00 ,  G08B3/10 ,  G08B21/12 ,  G08B25/10 ,  H04L12/56

    Abstract: A system and method for inferring an electronic rendering ( 170 ) of an environment ( 110 ) comprises a plurality of devices ( 341 and 345 ), and a processing device. Each wireless device is capable of determining a distance between a neighboring wireless device. Moreover, each device is capable of performing at least one of the following: determining an environmental attribute of the environment, and determining a location of an object in the environment. The processing device gathers information determined from the plurality of devices and infers the electronic rendering of the environment based on the information gathered.

    Method and apparatus for conditioning modulated signals for digital communications
    5.
    发明专利
    Method and apparatus for conditioning modulated signals for digital communications 未知

    公开(公告)号：GB2328847B

    公开(公告)日：2000-10-04

    申请号：GB9821576

    申请日：1997-04-02

    Applicant: MOTOROLA INC

    Inventor： O'DEA ROBERT J ,  MURI DAVID L

    IPC: H04L25/03 ,  H04L27/20 ,  H04L27/34

    Abstract: A digitally modulated signal is conditioned, such as to facilitate amplification. The digitally modulated signal is derived from an information stream which is mapped onto a symbol constellation to generate a sequence of channel symbols. The sequence of channel symbols is processed to provide a conditioned signal having a signal envelope that avoids signal envelope magnitudes below a threshold value (500). From a signal envelope representing the sequence of channel symbols, symbol interval minimum values are determined as the signal envelope transitions through successive channel symbols of the sequence (510). The conditioned signal is generated by localized adjustment of the signal envelope, such as by insertion of an adjustment pulse, to increase a particular symbol interval minimum value, when that value is below the threshold value (520, 530, 540, 545, 555).

    Radio with peak power and bandwidth efficient modulation
    7.
    发明专利
    Radio with peak power and bandwidth efficient modulation 未知

    公开(公告)号：GB2317795A

    公开(公告)日：1998-04-01

    申请号：GB9726272

    申请日：1996-05-23

    Applicant: MOTOROLA INC

    Inventor： MILLER SCOTT L ,  O'DEA ROBERT J

    IPC: H04L27/18 ,  H04B1/04 ,  H04L27/20 ,  H04L27/34 ,  H04L27/36

    Abstract: A communication device (300) includes a digital modulator (301), a Digital Signal Processor (306), and an amplifier (312). The digital modulator (301) includes an information generator (304) and a peak suppression device (402). The peak suppression device (402) includes a symbol mapper (404) and a symbol scaler (406). The information generated by the generator (401) are mapped on a constellation diagram via the symbol mapper (404). The mapped information is then scaled at the scaler (406) in order to reduce the peak-to-average ratio of the signal at the input to the amplifier (312).

    Radio with peak power and bandwidth efficient modulation
    8.
    发明专利
    Radio with peak power and bandwidth efficient modulation 未知

    公开(公告)号：AU5929496A

    公开(公告)日：1997-01-09

    申请号：AU5929496

    申请日：1996-05-23

    Applicant: MOTOROLA INC

    Inventor： MILLER SCOTT L ,  O'DEA ROBERT J

    IPC: H04L27/18 ,  H04B1/04 ,  H04L27/20 ,  H04L27/34 ,  H04L27/36

    Abstract: A communication device (300) includes a digital modulator (301), a Digital Signal Processor (306), and an amplifier (312). The digital modulator (301) includes an information generator (304) and a peak suppression device (402). The peak suppression device (402) includes a symbol mapper (404) and a symbol scaler (406). The information generated by the generator (401) are mapped on a constellation diagram via the symbol mapper (404). The mapped information is then scaled at the scaler (406) in order to reduce the peak-to-average ratio of the signal at the input to the amplifier (312).

    METHOD AND APPARATUS FOR LOCATION ESTIMATION
    9.
    发明申请
    METHOD AND APPARATUS FOR LOCATION ESTIMATION 审中-公开
    用于位置估计的方法和装置

    公开(公告)号：WO02054100A3

    公开(公告)日：2003-08-14

    申请号：PCT/US0148986

    申请日：2001-12-19

    Applicant: MOTOROLA INC

    Inventor： PATWARI NEAL K ,  O'DEA ROBERT J ,  ALLEN VERNON A ,  PERKINS MATTHEW R ,  BOURGEOIS MONIQUE J

    IPC: G01S5/00 ,  G01S5/02 ,  G01S11/02 ,  G01S13/84 ,  G01S19/25 ,  G01S3/02

    CPC classification number: G01C21/206 ,  G01S5/0018 ,  G01S5/0072 ,  G01S5/0289 ,  G01S11/02 ,  G01S13/84 ,  G01S2205/002

    Abstract: A system for locating a number of devices (112-130) by measuring signals transmitted between known location devices (112-118, 134-138, 214-218, 224-228) and unknown location devices (120-130, 222), and signals transmitted between pairs of unknown location devices (120-130,222), entering signal measurements into a graph function that includes a number of first sub-expressions, a number of which include signal measurement prediction sub-expressions, and have extrema when a predicted signal measurement is equal to an actual signal measurement, and optimizing the graph function.

    Abstract translation: 一种用于通过测量在已知位置设备（112-118,134-138,214-218,224-228）和未知位置设备（120-130,222）之间传输的信号来定位多个设备（112-130）的系统， 以及在未知位置设备对（120-130,222）之间传输的信号，将信号测量值输入到包括多个第一子表达式的图形函数中，其中多个第一子表达式包括信号测量预测子表达式，并且当预测 信号测量等于实际信号测量，并优化图形功能。

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