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    Networked wireless communications device programmed to identify and eliminate probable multipath errors so as to enhance accuracy in correcting sleep clock for thermally induced errors
    2.
    发明专利
    Networked wireless communications device programmed to identify and eliminate probable multipath errors so as to enhance accuracy in correcting sleep clock for thermally induced errors 有权
    网络无线通信设备编程识别和消除可疑的多路径错误，以增强校正休眠时间的精度以获得热导致的错误

    公开(公告)号：JP2010213315A

    公开(公告)日：2010-09-24

    申请号：JP2010096032

    申请日：2010-04-19

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： BREHLER MATTHIAS ,  NEUFELD ARTHUR J ,  LIU JING ,  MAY JOHN CHARLES ,  OTTE KURT W

    IPC: H04B1/40 ,  H04B1/16 ,  H04M1/73 ,  H04W52/02

    CPC classification number: H04W52/0287 ,  Y02D70/00

    Abstract: PROBLEM TO BE SOLVED: To correct a sleep clock operating in a wireless environment.
    SOLUTION: A time reference output by a wireless communication network is investigated and compared with output of a sleep clock and a current error in a sleep clock frequency is computed. If the current error does not exceed a predetermined threshold, the current error is utilized as a corrected error. If the current error exceeds the predetermined threshold, the restricted current error is utilized as a corrected error. Input including the corrected error is utilized to estimate the frequency of the sleep clock. When the next wake-up time is scheduled, the estimate in the frequency of the sleep clock is utilized.
    COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：纠正在无线环境中操作的睡眠时钟。 解决方案：调查由无线通信网络输出的时间参考，并将其与休眠时钟的输出进行比较，并计算睡眠时钟频率中的当前误差。 如果当前误差不超过预定阈值，则将当前误差用作校正误差。 如果当前误差超过预定阈值，则将受限电流误差用作校正误差。 使用包括校正误差的输入来估计睡眠时钟的频率。 当调度下一个唤醒时间时，利用睡眠时钟频率的估计。 版权所有（C）2010，JPO＆INPIT

    APPARATUS AND METHODS ACCOUNTING FOR AUTOMATIC GAIN CONTROL IN A MULTI CARRIER SYSTEM
    4.
    发明专利
    APPARATUS AND METHODS ACCOUNTING FOR AUTOMATIC GAIN CONTROL IN A MULTI CARRIER SYSTEM 未知

    公开(公告)号：CA2678113A1

    公开(公告)日：2008-09-12

    申请号：CA2678113

    申请日：2008-03-04

    Applicant: QUALCOMM INC

    Inventor： BREHLER MATTHIAS

    IPC: H04L25/02 ,  H03G3/20 ,  H04L27/26

    Abstract: Apparatus and methods are provided for accounting for the effects of auto matic gain control (AGC) in a multi carrier communications system when combi ning pilot tone interlaces by essentially reversing the effects of the AGC. In an aspect, a method for adjusting for the effects of automatic gain contr ol when combining pilot interlaces in an interlace filter of a communication system is disclosed. The method includes determining a normalization gain o f an applied automatic gain control normalized to a predefined time (604). A dditionally, two or more combining coefficients for an interlace filter are determined based on a selected criterion (606). Each of the two or more comb ining coefficients is then modified based on the determined normalization ga in (608) to yield adjusted combining coefficients. Corresponding apparatus a re also disclosed.

    TIMING ADJUSTMENTS FOR CHANNEL ESTIMATION IN A MULTI CARRIERSYSTEM
    8.
    发明专利
    TIMING ADJUSTMENTS FOR CHANNEL ESTIMATION IN A MULTI CARRIERSYSTEM 未知

    公开(公告)号：CA2677971A1

    公开(公告)日：2008-09-12

    申请号：CA2677971

    申请日：2008-03-04

    Applicant: QUALCOMM INC

    Inventor： CHEN JOSEPH ,  BREHLER MATTHIAS

    IPC: H04L25/02 ,  H04L27/26

    Abstract: Apparatus and methods are provided for making timing adjustments in a mul ti carrier communications system. In an aspect, a timing correction method i s. provided for a multi-carrier system. This includes adjusting the time bas is of two or more pilot interlaces with respect to each other (804) in order to account for timing differences between the interlaces when combining the interlaces, and then adjusting or matching the time bases of the combined i nterlaces with a symbol to be demodulated (806). The alignment and matching is performed -in order to generate channel estimates for data demodulation ( 807). The channel estimates, thus generated, along with the timing alignment information are in turn used for determining timing corrections to be appli ed to demodulation of a particular symbol. Corresponding apparatus are also disclosed that implement the methodology.

    9.
    发明专利
    未知

    公开(公告)号：BRPI0808485A2

    公开(公告)日：2014-07-01

    申请号：BRPI0808485

    申请日：2008-03-04

    Applicant: QUALCOMM INC

    Inventor： BREHLER MATTHIAS ,  CHAN JOSEPH

    IPC: H04L25/02 ,  H04L27/26

    Abstract: Apparatus and methods are provided for accounting for the effects of automatic gain control (AGC) in a multi carrier communications system when combining pilot tone interlaces by essentially reversing the effects of the AGC. In an aspect, a method for adjusting for the effects of automatic gain control when combining pilot interlaces in an interlace filter of a communication system is disclosed. The method includes determining a normalization gain of an applied automatic gain control normalized to a predefined time (604). Additionally, two or more combining coefficients for an interlace filter are determined based on a selected criterion (606). Each of the two or more combining coefficients is then modified based on the determined normalization gain (608) to yield adjusted combining coefficients. Corresponding apparatus are also disclosed.

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