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102 records (took 0.024 seconds)

    92.
    发明专利
    未知

    公开(公告)号：MX172192B

    公开(公告)日：1993-12-07

    申请号：MX1838289

    申请日：1989-11-15

    Applicant: MOTOROLA INC

    Inventor： DETTRO GREGORY J ,  LABEDZ GERALD PAUL ,  ATKINSON FREDERICK GARLAND

    IPC: H04J3/00 ,  H01J3/02 ,  H01J3/14 ,  H03G3/20 ,  H04J3/10 ,  H04J3/14 ,  H04B7/26

    Abstract: In a communications system having transmissions containing certain information-of-interest (147, 149) at predetermined intervals in the transmission, there is provided a method for isolating and processing that information-of-interest. The method is characterized by sensing the start of a transmission (141) and isolating for processing as the information-of-interest, the information received about instant(s) predeterminally removed in time (145) from the sensed start of transmission (141). Thus, the information-of-interest is isolated principally on the basis of elapsed time. The method for isolating and processing that information-of-interest is further characterized by sensing (249) the start of a transmission from the received signal power of the transmission exceeding a predetermined threshold (259); AGCing the transmission (233) and attenuating the AGC'd transmission from a maximum level to a desired level before the information-of-interest is expected to arrive; isolating for processing as the information-of-interest, the information received about instant(s) predeterminally removed in time from the sensed start of transmission, by timing (263) the expected interval between the instant that the start of the transmission is sensed and the predetermined instant that the information-in-interest should arrive (whereby the information-of-interest is isolated principally on the basis of elapsed time); tagging the information (247) isolated about that instant for processing; and beginning processing (275) with information just preceeding the isolated information (whereby the reliability of the information detection is enhanced by one-to-several bits).

    94.
    发明专利
    未知

    公开(公告)号：PT95577A

    公开(公告)日：1992-08-31

    申请号：PT9557790

    申请日：1990-10-12

    Applicant: MOTOROLA INC

    Inventor： LABEDZ GERALD PAUL ,  BORTH DAVID EDWARD ,  RASKY PHILLIP DAVID

    IPC: H04L25/08 ,  H04L25/03 ,  H04L27/00 ,  H04L27/01 ,  H04B7/00

    Abstract: In a communications network having time-dispersed signals, there is provided a mechanism for soft decision decoding. It comprises: radio reception of a time-dispersed signal, at least partly equalizing those time-dispersal effects, recovering information contained in the signal, multiplying with that recovered information the absolute value of that at-least-partly-equalized signal (scaled by a number derived from channel conditions over a time during which at least part of the information to be recovered is distributed), and error-correcting the multiplied information by a Viterbi algorithm channel decoding scheme of error correction. Accordingly, soft decision information is generated from within the equalization process itself.

    97.
    发明专利
    未知

    公开(公告)号：FI885253A0

    公开(公告)日：1988-11-14

    申请号：FI885253

    申请日：1988-11-14

    Applicant: MOTOROLA INC

    Inventor： LABEDZ GERALD PAUL

    IPC: H04B7/26 ,  H04B7/02 ,  H04W36/18 ,  H04W36/30 ,  H04W72/08 ,  H04B

    Abstract: A cellular system employing time division messages transmitted from a plurality of radiators (407, 409, 411) in each cell is disclosed. A first electromagnetic signal at a particular frequency is transmitted during one time slot (903) from one of the plurality of radiators. A second electromagnetic signal at the same frequency is transmitted during another time slot (917) from a second one of the plurality of radiators. A remote unit (401,403) selects the best electromagnetic signal and communicates the selection to a cell controller (413), which selects a third time slot for transmission of a message from the radiator transmitting the best electromagnetic signal.

    98.
    发明专利
    未知

    公开(公告)号：FI885253A

    公开(公告)日：1988-11-14

    申请号：FI885253

    申请日：1988-11-14

    Applicant: MOTOROLA INC

    Inventor： LABEDZ GERALD PAUL

    IPC: H04B7/26 ,  H04B7/02 ,  H04W36/18 ,  H04W36/30 ,  H04W72/08 ,  H04B

    Abstract: A cellular system employing time division messages transmitted from a plurality of radiators (407, 409, 411) in each cell is disclosed. A first electromagnetic signal at a particular frequency is transmitted during one time slot (903) from one of the plurality of radiators. A second electromagnetic signal at the same frequency is transmitted during another time slot (917) from a second one of the plurality of radiators. A remote unit (401,403) selects the best electromagnetic signal and communicates the selection to a cell controller (413), which selects a third time slot for transmission of a message from the radiator transmitting the best electromagnetic signal.

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