12.
    发明专利
    未知

    公开(公告)号:DE602004013592D1

    公开(公告)日:2008-06-19

    申请号:DE602004013592

    申请日:2004-07-12

    Applicant: QUALCOMM INC

    Abstract: A dynamic shared forward link channel (or “data” channel) is used to send multicast data to a group of wireless devices, e.g., using a common long code mask for the data channel. Reference power control (PC) bits are also sent on the data channel and used for signal quality estimation. A shared forward link control channel is used to send user-specific signaling to individual wireless devices, e.g., using time division multiplexing (TDM) and a unique long code mask for each wireless device. A shared forward link indicator channel is used to send reverse link (RL) PC bits to the wireless devices, e.g., using TDM. The data channel is jointly power controlled by all wireless devices receiving the data channel. The control and indicator channels are individually power controlled by each wireless device such that the signaling and RL PC bits sent on these channels for the wireless device are reliably received.

    Method and apparatus for processing a punctured pilot channel.

    公开(公告)号:HK1043889A1

    公开(公告)日:2002-09-27

    申请号:HK02105486

    申请日:2002-07-25

    Applicant: QUALCOMM INC

    Abstract: The punctured pilot channel comprises information symbols of uncertain sign punctured into a sequence of pilot channel symbols of predetermined sign. The apparatus includes an information sign demodulation circuit for determining the sign of the information symbols in response to the pilot channel symbols. A continuous pilot generator generates a non-punctured pilot channel of predetermined sign from the information symbols and the pilot channel symbols. In a first embodiment, the information sign demodulator further comprises a dot product circuit for calculating a dot product of the pilot channel symbols and the punctured information symbols, and a threshold comparator for comparing the dot product to a predetermined threshold.

    PILOT FILTERING IN THE PRESENCE OF PHASE DISCONTINUITIES IN A CDMA RECEIVER

    公开(公告)号:CA2355837A1

    公开(公告)日:2000-07-20

    申请号:CA2355837

    申请日:2000-01-11

    Applicant: QUALCOMM INC

    Abstract: A novel and improved method and apparatus for coherent demodulation in the presence of phase discontinuities is described. The pilot signal is prepared for optimal coherent demodulation by the use of two filters: one capable of withstanding the effects of phase discontinuity; a second providing superior filtering performance than the first so long as phase discontinuities are no t present. Both filters are simultaneously operated. In the exemplary embodime nt of the present invention, a sliding window filter (410) is employed for the superior performing filter absent phase discontinuity and a block filter (44 0) is employed for use when phase discontinuities are present.

    17.
    发明专利
    未知

    公开(公告)号:BRPI0412468A

    公开(公告)日:2006-09-19

    申请号:BRPI0412468

    申请日:2004-07-12

    Applicant: QUALCOMM INC

    Abstract: A dynamic shared forward link channel (or “data” channel) is used to send multicast data to a group of wireless devices, e.g., using a common long code mask for the data channel. Reference power control (PC) bits are also sent on the data channel and used for signal quality estimation. A shared forward link control channel is used to send user-specific signaling to individual wireless devices, e.g., using time division multiplexing (TDM) and a unique long code mask for each wireless device. A shared forward link indicator channel is used to send reverse link (RL) PC bits to the wireless devices, e.g., using TDM. The data channel is jointly power controlled by all wireless devices receiving the data channel. The control and indicator channels are individually power controlled by each wireless device such that the signaling and RL PC bits sent on these channels for the wireless device are reliably received.

    18.
    发明专利
    未知

    公开(公告)号:BR0317008A

    公开(公告)日:2005-10-25

    申请号:BR0317008

    申请日:2003-12-04

    Applicant: QUALCOMM INC

    Abstract: Techniques to quickly adjust an SIR target toward a final value needed to achieve a specified target BLER for a data transmission. The outer loop may be implemented with multiple modes. The SIR target may be maintained fixed in a hold mode, adjusted in large down steps to speed up convergence in an acquisition mode, and adjusted by a small down step and a large up step for good and erased blocks, respectively, in a tracking mode. Various schemes may be used to adjust the SIR target by larger down steps in the acquisition mode. These schemes may be used even if data is transmitted intermittently, the target BLER is set to a low value, and/or one or multiple transport channels are used for data transmission. The SIR target may be boosted by a particular amount upon transitioning from the acquisition mode to the tracking mode.

    19.
    发明专利
    未知

    公开(公告)号:DE60015969D1

    公开(公告)日:2004-12-23

    申请号:DE60015969

    申请日:2000-04-21

    Applicant: QUALCOMM INC

    Abstract: The punctured pilot channel comprises information symbols of uncertain sign punctured into a sequence of pilot channel symbols of predetermined sign. The apparatus includes an information sign demodulation circuit for determining the sign of the information symbols in response to the pilot channel symbols. A continuous pilot generator generates a non-punctured pilot channel of predetermined sign from the information symbols and the pilot channel symbols. In a first embodiment, the information sign demodulator further comprises a dot product circuit for calculating a dot product of the pilot channel symbols and the punctured information symbols, and a threshold comparator for comparing the dot product to a predetermined threshold.

    Fast converging power control for wireless communication systems

    公开(公告)号:AU2003293440A8

    公开(公告)日:2004-06-30

    申请号:AU2003293440

    申请日:2003-12-04

    Applicant: QUALCOMM INC

    Abstract: Techniques to quickly adjust an SIR target toward a final value needed to achieve a specified target BLER for a data transmission. The outer loop may be implemented with multiple modes. The SIR target may be maintained fixed in a hold mode, adjusted in large down steps to speed up convergence in an acquisition mode, and adjusted by a small down step and a large up step for good and erased blocks, respectively, in a tracking mode. Various schemes may be used to adjust the SIR target by larger down steps in the acquisition mode. These schemes may be used even if data is transmitted intermittently, the target BLER is set to a low value, and/or one or multiple transport channels are used for data transmission. The SIR target may be boosted by a particular amount upon transitioning from the acquisition mode to the tracking mode.

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