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    Reliability index for parameter estimation value occupying cumulative error
    1.
    发明专利
    Reliability index for parameter estimation value occupying cumulative error 审中-公开
    参数估计值可靠性指标累积积分误差

    公开(公告)号：JP2012013706A

    公开(公告)日：2012-01-19

    申请号：JP2011167372

    申请日：2011-07-29

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

    Inventor： ROLAND R RICK ,  STEIN JEREMY M ,  MASSEY AMERIGAS ,  IVAN FERNANDEZ-CORBATON

    IPC: G01S19/22 ,  G01S5/02 ,  G01S19/19 ,  H04W64/00

    CPC classification number: H04W64/00 ,  G01S5/0205 ,  G01S5/0215

    Abstract: PROBLEM TO BE SOLVED: To provide a method for generating a reliability index for a parameter estimation value derived from a signal by using correlation analysis.SOLUTION: The method is started by acquiring an indication indicating that a non-visual line signal condition exists or may probably exist and/or an indication indicating that a signal condition of a plurality of routes exists or may probably exist. A reliability index for a parameter estimation value is derived in accordance with these indications. The parameter estimation value is a signal arrival time estimation value, and the reliability index is a root mean square error of the arrival time estimation values. Then, the indication indicating that the non-visual line signal condition exists or may probably exist is acquired based on a measurement value of strength of a correlation function at a peak. A strength measurement value of the correlation function at the peak is energy (E/I) in each chip which is divided by a total receiving output or energy of the correlation function at the peak.

    Abstract translation: 要解决的问题：提供一种通过使用相关分析来生成从信号导出的参数估计值的可靠性指标的方法。 解决方案：通过获取指示存在非可视线路信号条件或可能存在的指示和/或指示存在多个路由的信号条件或可能存在的指示来启动该方法。 根据这些指示导出参数估计值的可靠性指标。 参数估计值是信号到达时间估计值，可靠性指标是到达时间估计值的均方根误差。 然后，基于峰值处的相关函数的强度的测量值，获取表示非视线信号条件存在或可能存在的指示。 峰值相关函数的强度测量值是分割的每个芯片中的能量（E / I 0 ） 通过在峰值处的相关函数的总接收输出或能量。 版权所有（C）2012，JPO＆INPIT

    SYSTEM AND METHOD FOR WIRELESS SIGNAL TIME OF ARRIVAL
    2.
    发明专利
    SYSTEM AND METHOD FOR WIRELESS SIGNAL TIME OF ARRIVAL 未知

    公开(公告)号：MY138823A

    公开(公告)日：2009-07-31

    申请号：MYPI20022194

    申请日：2002-06-12

    Applicant: QUALCOMM INC

    Inventor： IVAN FERNANDEZ-CORBATON ,  JEREMY STEIN ,  RICK ROLAND R

    IPC: G06F17/10 ,  G01S5/02 ,  G01S19/27 ,  H04W64/00

    Abstract: A SYSTEM AND METHOD FOR ACCURATELY DETERMINING TIME OF ARRIVAL USING A MATHEMATICAL MODEL (122) THAT MIMICS A CORRELATION FUNCTION. A CORRELATION VALUE IS SAMPLED AT A PREDETERMINED PERIODIC INTERVAL AND A MAXIMUM CORRELATION VALUE, COINCIDING WITH A PARTICULAR POINT IN TIME, IS DETERMINED. THE MATHEMATICAL MODEL (122) USES THE MAXIMUM MEASURED CORRELATION VALUE AND CORRELATION VALUES AT ADJACENT SAMPLE POINTS TO DETERMINE COEFFICIENTS FOR THE SELECTED MATHEMATICAL MODEL (122). THE COEFFICIENTS MAY BE CALCULATED AND USED TO DETERMINE THE ACTUAL PEAK, WHICH MAY FALL IN-BETWEEN THE SAMPLE POINTS. THE ACTUAL PEAK VALUE IS USED TO ACCURATELY DETERMINE THE TIME OF ARRIVAL OF A SIGNAL. TIME OF ARRIVAL SIGNALS FROM A PLURALITY OF REMOTE TRANSMITTERS ARE USED ALONG WITH CONVENTIONAL TRIANGULATION TECHNIQUES TO ACCURATELY DETERMINE THE LOCATION OF THE WIRELESS UNIT.

    seleção de taxa para um sistema ofdm
    3.
    发明专利
    seleção de taxa para um sistema ofdm 未知

    公开(公告)号：BRPI0214310B1

    公开(公告)日：2019-07-02

    申请号：BRPI0214310

    申请日：2002-11-20

    Applicant: QUALCOMM INC

    Inventor： AHMAD JALALI ,  IVAN FERNANDEZ-CORBATON

    IPC: H04J11/00 ,  H04L1/18 ,  H04L1/00 ,  H04L27/26 ,  H04L29/08

    Abstract: "seleção de taxa para um sistema ofdm". na presente invenção são apresentadas técnicas para determinar a taxa para uma transmissão de dados em um sistema ofdm. a taxa de dados máxima que pode ser transmitida com confiança através de um determinado canal de multipercurso (não monótono) pelo sistema ofdm é determinado com base em uma medida para um canal (monótono) equivalente. para um determinado canal de multipercurso e uma taxa específica (que pode ser indicativa de uma taxa de dados específica, de um esquema de modulação e uma taxa de codificação), a medida é inicialmente obtida a partir de uma taxa de dados equivalente e de um esquema de modulação específico. é determinada a seguir, uma snr limite necessária para transmitir com confiança a taxa de dados específica usando o esquema de modulação específico e taxa de codificação. a taxa específica é julgada como suportada pelo canal de multipercurso caso a medida seja maior ou igual à snr limite. a transmissão incremental é usada para considerar erros na taxa de dados determinada.

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