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    DOUBLE DIGITAL LOW-IF COMPOUND RECEIVER
    1.
    发明专利
    DOUBLE DIGITAL LOW-IF COMPOUND RECEIVER 失效

    公开(公告)号：JP2001217800A

    公开(公告)日：2001-08-10

    申请号：JP2000389165

    申请日：2000-12-21

    Applicant: MOTOROLA INC

    Inventor： KHLAT NADIM ,  KUFFNER STEPHEN

    IPC: H03M3/02 ,  H03D7/16 ,  H04B1/30 ,  H04B1/40 ,  H04B1/69 ,  H04J11/00

    Abstract: PROBLEM TO BE SOLVED: To provide a communication receiver capable of processing the signals of both wide and narrow bands without overlapping components. SOLUTION: A spectrum part wide sufficiently for containing a wide band carrier (BW) is detected, the BW is converted to the basebands of I and Q components, and each of components has the band width of BW/2. Then, the I and Q components are further converted to I and Q components for the purposed of forming components II, IQ, QI and QQ having band width equal to BW/4 and each of sub-bands can contain one part of original transmitted information. In a wide band mode, each of components is separately processed, and the respective parts of the original transmitted information are extracted. In a narrow band mode, each of components containing information is separately processed within the transmission carrier of narrow band and the respective parts of the original transmitted information are extracted. Next, the components are coupled again and the original transmitted information is reproduced.

    2.
    发明专利
    未知

    公开(公告)号：DE69921495D1

    公开(公告)日：2004-12-02

    申请号：DE69921495

    申请日：1999-12-23

    Applicant: MOTOROLA INC

    Inventor： KHLAT NADIM ,  KUFFNER STEPHEN

    IPC: H03M3/02 ,  H03D7/16 ,  H04B1/30 ,  H04B1/40 ,  H04B1/69 ,  H04J11/00

    Abstract: A communications receiver and a method for receiving and processing information transmitted on either a wide band carrier or a narrow band carrier having In-phase-Quadrature-phase (IQ) modulation, comprising, detecting a portion of the spectrum wide enough to encompass the wide band carrier (BW), converting the wide band carrier to baseband in I and Q components, each component having a bandwidth of BW/2, converting the I and Q components into further I and Q components to form components II, IQ QI, and QQ of bandwidth equal to BW/4, where each of the subbands may contain a portion of the originally transmitted information. Operating in wideband mode, each of the components /is separately processed to extract portions of the originally transmitted information, and operating in a narrowband mode, each of the components containing information is separately processed within the narrow band transmitted carrier to extract portions of the originally transmitted information. The components are then recombined to reconstruct the originally transmitted information.

    MULTIPLE MODE RF COMMUNICATION DEVICE
    3.
    发明专利
    MULTIPLE MODE RF COMMUNICATION DEVICE 未知

    公开(公告)号：AU2003231264A1

    公开(公告)日：2004-01-06

    申请号：AU2003231264

    申请日：2003-05-05

    Applicant: MOTOROLA INC

    Inventor： KUFFNER STEPHEN

    IPC: H04B1/40 ,  H04L12/28 ,  H04W36/06 ,  H04W36/30 ,  H04W72/00 ,  H04W88/06 ,  H04B7/216 ,  H04L12/56 ,  H04Q7/20

    Abstract: A multiple mode RF communication device ( 100 ), such as a transmitter, receiver or transceiver, has a first RF communication resource ( 102, 122 ) that communicates by default using a first communication mode. A second RF communication resource ( 104, 124 ) communicates by default using a second communication mode. A system manager ( 110 ) deploys the first and second communication resources according to a set of deployment rules, wherein the deployment rules may be dependent upon a communication quality parameter, priorities, availability of the first and second communication resources as well as other parameters.

    METHOD AND APPARATUS FOR ELECTRONIC ITEM IDENTIFICATION IN A COMMUNICATION SYSTEM USING KNOWN SOURCE PARAMETERS
    5.
    发明申请
    METHOD AND APPARATUS FOR ELECTRONIC ITEM IDENTIFICATION IN A COMMUNICATION SYSTEM USING KNOWN SOURCE PARAMETERS 审中-公开
    使用已知源参数的通信系统中电子项目识别的方法和装置

    公开(公告)号：WO2004110079A2

    公开(公告)日：2004-12-16

    申请号：PCT/US2004006931

    申请日：2004-03-04

    Applicant: MOTOROLA INC ,  KUFFNER STEPHEN ,  COLLINS TIMOTHY ,  EASTMOND BRUCE ,  GURNEY DAVID P

    Inventor： KUFFNER STEPHEN ,  COLLINS TIMOTHY ,  EASTMOND BRUCE ,  GURNEY DAVID P

    IPC: G06K7/00 ,  H04Q

    CPC classification number: G06K7/10039 ,  G06K7/0008

    Abstract: A communications method including the steps of: receiving signals from at least one signal source during a first signal source transmission; estimating at least one signal source parameter based on the received signals during the first signal source transmission; receiving signals from at least one signal source during a second signal source transmission; and determining a difference between the first and second signal source transmissions using the at least one estimated signal source parameter.

    Abstract translation: 一种通信方法，包括以下步骤：在第一信号源传输期间从至少一个信号源接收信号; 在第一信号源传输期间基于接收到的信号来估计至少一个信号源参数; 在第二信号源传输期间从至少一个信号源接收信号; 以及使用所述至少一个估计信号源参数来确定所述第一和第二信号源传输之间的差异。

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