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27 records (took 0.022 seconds)

    1.
    发明专利
    未知

    公开(公告)号：BRPI0717759A2

    公开(公告)日：2013-11-12

    申请号：BRPI0717759

    申请日：2007-10-26

    Applicant: QUALCOMM INC

    Inventor： HUANG YUHENG ,  DURAL OZGUR ,  SOLIMAN SAMIR S ,  RAJKOTIA AMOL

    IPC: H04L27/26 ,  H04B1/69

    Abstract: A method for performing carrier frequency offset estimation and frame synchronization is disclosed herein. In one approach, the method includes performing a first level frequency discrimination on at least one estimated channel tap to generate a frequency discriminated value; estimating a phase error from the frequency discriminated value; and, determining a predetermined frame synchronization pattern from the estimated phase error. A computer program product having code and a wireless communications apparatus for performing the method are also described herein.

    METHOD FOR REDUCING POWER CONSUMPTION IN A MULTI- MODE DEVICE
    4.
    发明专利
    METHOD FOR REDUCING POWER CONSUMPTION IN A MULTI- MODE DEVICE 未知

    公开(公告)号：CA2546311A1

    公开(公告)日：2005-06-09

    申请号：CA2546311

    申请日：2004-11-24

    Applicant: QUALCOMM INC

    Inventor： BURKE JOHN M ,  RAJKOTIA AMOL ,  BURKE JOSEPH PATRICK ,  PATTABIRAMAN GANESH M

    IPC: H04B1/69 ,  H04B1/707 ,  H04W52/02

    Abstract: Method for reducing power consumption in a multimode device is disclosed. The multimode device includes a COMM1 component and a COMM2 component. In one aspect, a COMM1 component may be a UWB component and a COMM2 component may be a CDMA component. According to a disclosed embodiment, the time for a next scheduled COMM1 wakeup process to be performed by a COMM1 module is established. Thereafter, if the next COMM1 wakeup process is scheduled to be performed before the next COMM2 wakeup process, a COMM2 wakeup process is synchronized to be performed by a COMM2 module at the same time as the next COMM1 wakeup process. Following, when the time arrives for the COMM1 module to perform the next COMM1 wakeup process, the COMM2 module also performs the COMM2 wakeup process.

    METHOD AND APPARATUS FOR SYMBOL TIMING ESTIMATION IN A WIRELESS COMMUNICATIONS SYSTEM
    5.
    发明专利
    METHOD AND APPARATUS FOR SYMBOL TIMING ESTIMATION IN A WIRELESS COMMUNICATIONS SYSTEM 未知

    公开(公告)号：CA2665159A1

    公开(公告)日：2008-05-02

    申请号：CA2665159

    申请日：2007-10-26

    Applicant: QUALCOMM INC

    Inventor： HUANG YUHENG ,  DURAL OZGUR ,  RAJKOTIA AMOL ,  SOLIMAN SAMIR S

    IPC: H04L27/26 ,  H04B1/69

    Abstract: A method for performing symbol timing estimation is disclosed herein. In one approach, the method includes defining a search space in a plurality of estimated magnitudes of channel taps; defining a search window (SW-33) in th e search space; and locating a symbol timing estimate index in the search sp ace corresponding to a maximum value of an energy of the plurality of estima ted magnitudes of channel taps within the search window (1660). A computer p rogram product having code and a wireless communications apparatus for perfo rming the method are also described herein.

    7.
    发明专利
    未知

    公开(公告)号：BRPI0507458A

    公开(公告)日：2007-07-10

    申请号：BRPI0507458

    申请日：2005-02-04

    Applicant: QUALCOMM INC

    Inventor： KRISHNAN RANGANATHAN ,  RAJKOTIA AMOL

    IPC: H04B7/00 ,  H04B1/69 ,  H04B7/005 ,  H04W52/08 ,  H04W52/10 ,  H04W52/24

    Abstract: Systems and techniques are disclosed relating to wireless communications. The systems and techniques involve wireless communications wherein a module or communications device is configured to enable a closed-loop power control in response to a detecting a wide-band interferer and disable the closed-loop power control in response to not detecting interferer.

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