232.
    发明专利
    未知

    公开(公告)号:AT446623T

    公开(公告)日:2009-11-15

    申请号:AT07011317

    申请日:2000-10-31

    Applicant: QUALCOMM INC

    Abstract: An apparatus for transmitting pilot references from a plurality of transmission sources, comprises a receiver for receiving, at each transmission source, one or more signals indicative of a time reference for the communication system. The apparatus generates, at each transmission source, a plurality of pilot bursts for a pilot reference; and transmits the plurality of pilot bursts in synchronization with the time reference from each transmission source.

    235.
    发明专利
    未知

    公开(公告)号:AT434869T

    公开(公告)日:2009-07-15

    申请号:AT00125802

    申请日:1992-05-17

    Applicant: QUALCOMM INC

    Abstract: A cellular communication system in which a system user and another user communicate with each other by way of information carrying spread spectrum modulated signals transmitted via a cell-site in which system: the system user comprises a transmitter for transmitting information carrying spread spectrum modulated signals to said cell-site, a receiver for receiving information carrying spread spectrum modulated signals from said cell-site and means for measuring signal quality in said information carrying spread spectrum modulated signals received by the system user; the cell-site comprises a transmitter for transmitting information carrying spread spectrum modulated signals to said system user, a receiver for receiving information carrying spread spectrum modulated signals from said system user and adjusting means for adjusting the power of information carrying spread spectrum modulated signals transmitted from the cell-site ; ; and power control means is provided for controlling the transmission power of the information carrying spread spectrum modulated signals by measuring the signal power in the information carrying spread spectrum modulated signals received by the system user and transmitting data representing the measured power to the cell-site by way of the information carrying spread spectrum modulated signals, the adjusting means being responsive to the data in the information carrying spread spectrum modulated signals from the system user to adjust the power in the information carrying spread spectrum modulated signals transmitted by the cell-site.

    237.
    发明专利
    未知

    公开(公告)号:DE69435197D1

    公开(公告)日:2009-04-23

    申请号:DE69435197

    申请日:1994-10-28

    Applicant: QUALCOMM INC

    Abstract: A method and apparatus providing softer handoff of a mobile unit (90) between sectors (50, 70, and 80) of a common base station (60). A sectorized base station (60) comprises a set of demodulation elements (240A - 204N). Each demodulation element (240A - 204N) may be assigned to a signal from one of a plurality of sectors. The output of the demodulators (240A - 204N) are combined before the decoding process independent of the sector from which the data originated. This configuration provides improved output data reliability, more stable power control, and more efficient use of resources at the base station.

    240.
    发明专利
    未知

    公开(公告)号:AT419684T

    公开(公告)日:2009-01-15

    申请号:AT04021932

    申请日:1994-11-22

    Applicant: QUALCOMM INC

    Abstract: A method for providing power control with variable data rate, the method comprising: receiving a data frame having an input data rate selected from a plurality of possible input data rates; selecting an encoding rate based on the input data rate; encoding data frames to produce output symbols, repeating output symbols using first and second generating polynomials and multiplexing the repeated output symbols, selecting a puncturing format to puncture data bits and producing output data having a constant output data rate for a number of possible input data rates based on a combination of input data rates, selected encoding rate and selected puncturing format for providing said variable data rate communication link; determining a frame error rate for a number of possible input data rates; calculating differences between the frame error rates and a target error rate and adjusting the power depending on whether the difference is greater, equal or less than a predetermined threshold.

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