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    94.
    发明专利
    未知

    公开(公告)号：FI965180A

    公开(公告)日：1997-02-20

    申请号：FI965180

    申请日：1996-12-20

    Applicant: QUALCOMM INC

    Inventor： ANTONIO FRANKLIN P ,  WOLF JACK K ,  GILHOUSEN KLEIN S ,  ZEHAVI EPHRAIM

    IPC: H01Q3/26 ,  H04B1/7085 ,  H01Q3/24 ,  H04B1/7117 ,  H04B1/712 ,  H04B7/26 ,  H04L1/06 ,  H04W16/28 ,  H04B

    Abstract: A system and method for adaptively sectorizing channel resources within a digital cellular communication system is disclosed herein. The system includes an antenna arrangement for providing at least first and second electromagnetic beams for receiving a first information signal transmitted by a specific one of a plurality of users, thereby generating first and second received signals. A first set of beam-forming signals are then generated from the first and second received signals. A demodulating receiver is provided for demodulating at least first and second beam-forming signals included within the first set of beam-forming signals, thereby producing first and second demodulated signals. The system further includes a tracking network for tracking multipath information signals, received from various positions and angles of incidence, based on comparison of the first and second demodulated signals.

    MULTIPLEXED ADDRESS CONTROL IN A TDM COMMUNICATION SYSTEM
    100.
    发明专利
    MULTIPLEXED ADDRESS CONTROL IN A TDM COMMUNICATION SYSTEM 未知

    公开(公告)号：CA1313278C

    公开(公告)日：1993-01-26

    申请号：CA587211

    申请日：1988-12-29

    Applicant: QUALCOMM INC

    Inventor： GILHOUSEN KLEIN S ,  ANTONIO FRANKLIN P ,  JACOBS IRWIN M

    IPC: H04B7/212 ,  H04J3/00 ,  H04J3/16 ,  H04J3/24 ,  H04Q7/06 ,  H04Q7/08 ,  H04Q7/12 ,  H04Q7/18 ,  H04Q7/38

    Abstract: MULTIPLEXED ADDRESS CONTROL IN A TDM COMMUNICATION SYSTEM A message communication system employing one or more centralized communication stations transmitting messages through Earth orbit relay satellites to mobile receivers utilizing Time Division Multiplexed (TDM) communication signals having signal time frames divided into a series of transmission channels. A predetermined number of the channels are designated as address channels with the remainder being used for data transfer. Information transmitted on the address channels is used by receivers to determine both the presence of a message and its corresponding data transmission channel. Each system receiver scans, and tracks only the communication signal address channels until a message addressed to that receiver is detected, at which time the selected receiver changes channels to the designated data channel for reception of the message. Thus, demodulation of the entire communication signal is not required and processing time and power is reduced for the typical waiting condition when messages are not being received. While a message is being received only a portion of the communication signal need be received, demodulated and decoded. The decoded message is then displayed on a display screen or similar device for the recipient. ¢2536MPA4.All!

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