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    Time-tracking for clustered demodulation elements in a spread spectrum system
    1.
    发明授权
    Time-tracking for clustered demodulation elements in a spread spectrum system 有权
    用于扩频系统中的聚类解调元件的时间跟踪

    公开(公告)号：US07688882B2

    公开(公告)日：2010-03-30

    申请号：US11839504

    申请日：2007-08-15

    申请人： Roland R. Rick ,  Shimman Patel ,  Keith Saints ,  Haitao Zhang

    发明人： Roland R. Rick ,  Shimman Patel ,  Keith Saints ,  Haitao Zhang

    IPC分类号： H04B1/00

    CPC分类号： H04B1/7085 ,  H04B1/7117 ,  H04B7/0697

    摘要： An apparatus, such as a subscriber unit or a base station within a spread spectrum communication system, provides advanced control over the time-tracking of demodulation elements when unresolvable multipath situations arise. The apparatus provides merge protection that prevents clustered demodulation elements from contracting beyond a minimum time span. In addition, the apparatus provides a master/slave feature for synchronizing the time-tracking of the demodulation elements when clustered around a multipath signal.

    摘要翻译： 在扩展频谱通信系统中的诸如用户单元或基站之类的装置在不可解决的多径情况出现时提供对解调元件的时间跟踪的高级控制。 该装置提供合并保护，防止聚集的解调元件超出最小时间间隔。 此外，该设备提供主/从功能，用于在聚集在多路径信号周围时同步解调元件的时间跟踪。

    Time-Tracking for Clustered Demodulation Elements in a Spread Spectrum System
    2.
    发明申请
    Time-Tracking for Clustered Demodulation Elements in a Spread Spectrum System 有权
    扩频系统中聚类解调元素的时间跟踪

    公开(公告)号：US20080260005A1

    公开(公告)日：2008-10-23

    申请号：US11839504

    申请日：2007-08-15

    申请人： Roland R. Rick ,  Shimman Patel ,  Keith Saints ,  Haitao Zhang

    发明人： Roland R. Rick ,  Shimman Patel ,  Keith Saints ,  Haitao Zhang

    IPC分类号： H04B1/707

    CPC分类号： H04B1/7085 ,  H04B1/7117 ,  H04B7/0697

    摘要： An apparatus, such as a subscriber unit or a base station within a spread spectrum communication system, provides advanced control over the time-tracking of demodulation elements when unresolvable multipath situations arise. The apparatus provides merge protection that prevents clustered demodulation elements from contracting beyond a minimum time span. In addition, the apparatus provides a master/slave feature for synchronizing the time-tracking of the demodulation elements when clustered around a multipath signal.

    摘要翻译： 在扩展频谱通信系统中的诸如用户单元或基站之类的装置在不可解决的多径情况出现时提供对解调元件的时间跟踪的高级控制。 该装置提供合并保护，防止聚集的解调元件超出最小时间间隔。 此外，该设备提供主/从功能，用于在聚集在多路径信号周围时同步解调元件的时间跟踪。

    Time-tracking for clustered demodulation elements in a spread spectrum system
    3.
    发明授权
    Time-tracking for clustered demodulation elements in a spread spectrum system 有权
    用于扩频系统中的聚类解调元件的时间跟踪

    公开(公告)号：US07277471B2

    公开(公告)日：2007-10-02

    申请号：US09968399

    申请日：2001-09-28

    申请人： Roland R. Rick ,  Shimman Patel ,  Keith Saints ,  Haitao Zhang

    发明人： Roland R. Rick ,  Shimman Patel ,  Keith Saints ,  Haitao Zhang

    IPC分类号： H04B1/00

    CPC分类号： H04B1/7085 ,  H04B1/7117 ,  H04B7/0697

    摘要： An apparatus, such as a subscriber unit or a base station within a spread spectrum communication system, provides advanced control over the time-tracking of demodulation elements when unresolvable multipath situations arise. The apparatus provides merge protection that prevents clustered demodulation elements from contracting beyond a minimum time span. In addition, the apparatus provides a master/slave feature for synchronizing the time-tracking of the demodulation elements when clustered around a multipath signal.

    摘要翻译： 在扩展频谱通信系统中的诸如用户单元或基站之类的装置在不可解决的多径情况出现时提供对解调元件的时间跟踪的高级控制。 该装置提供合并保护，防止聚集的解调元件超出最小时间间隔。 此外，该设备提供主/从功能，用于在聚集在多路径信号周围时同步解调元件的时间跟踪。

    Reliability metrics for parameter estimates which account for cumulative error
    5.
    发明授权
    Reliability metrics for parameter estimates which account for cumulative error 失效
    考虑到累积误差的参数估计的可靠性指标

    公开(公告)号：US07558534B2

    公开(公告)日：2009-07-07

    申请号：US10125182

    申请日：2002-04-17

    申请人： Jeremy Stein ,  Ivan Fernandez-Corbaton ,  Roland R. Rick ,  Messay Amerga

    发明人： Jeremy Stein ,  Ivan Fernandez-Corbaton ,  Roland R. Rick ,  Messay Amerga

    IPC分类号： H04B17/00 ,  H04M1/00

    CPC分类号： H04W64/00 ,  G01S5/0205 ,  G01S5/0215

    摘要： A method of producing a reliability metric for a parameter estimate derived from a signal using correlation analysis is described. The method begins by obtaining an indication of whether a non line of sight signal condition is present or likely and/or obtaining an indication of whether a multi-path signal condition is present or likely. Responsive to one or both of these indications, the method derives a reliability metric for the parameter estimate. In one embodiment, the parameter estimate is an estimate of time of arrival (TOA) of the signal, and the reliability metric is root mean square error (RMSE) of the time of arrival estimate. This embodiment obtains an indication of whether a non line of sight signal condition is present or likely based on a measure of the strength of the correlation function at the peak thereof. The measure of the strength of the correlation function at the peak thereof may be energy per chip divided by total received power (Ec/I0) or may simply be the raw energy of the correlation function at the peak. The RMSE metric which is computed in this embodiment varies inversely with the peak strength of the correlation function.

    摘要翻译： 描述了使用相关性分析来生成从信号导出的参数估计的可靠性度量的方法。 该方法通过获得视线信号条件是否存在或可能存在和/或获得多径信号状况是否存在或可能的指示开始。 响应于这些指示中的一个或两个，该方法导出参数估计的可靠性度量。 在一个实施例中，参数估计是信号的到达时间（TOA）的估计，可靠性度量是到达时间估计的均方根误差（RMSE）。 该实施例基于在其峰值处的相关函数的强度的度量来获得是否存在非线视觉信号条件或可能的指示。 峰值处的相关函数的强度的度量可以是每个芯片的能量除以总接收功率（Ec / I0），或者可以简单地是峰值处的相关函数的原始能量。 在本实施例中计算的RMSE度量与相关函数的峰值强度成反比变化。

    Metric biasing for maximum likelihood sequence estimators
    6.
    发明授权
    Metric biasing for maximum likelihood sequence estimators 有权
    最大似然序列估计量的度量偏置

    公开(公告)号：US06452984B1

    公开(公告)日：2002-09-17

    申请号：US09258032

    申请日：1999-02-25

    申请人： Brian Banister ,  Roland R. Rick

    发明人： Brian Banister ,  Roland R. Rick

    IPC分类号： H03M1339

    CPC分类号： H03M13/39

    摘要： A decoder for decoding convolutionally encoded precoding data is described. The precoding sequence consists of two subsequences t and b; the value of t corresponds to a convolutional encoder state at a particular time. The a priori probability Pr(ti) that the subsequence t has a particular value ti is generated. In the preferred embodiment, the metric function that is applied to a test sequence including ti is then biased by adding (&sgr;2/&agr;2) ln(Pr(ti)), where &agr;2 is the signal average energy per symbol of the transmitted data, &sgr;2 is the variance of the noise added by a channel through which the data is transmitted. The resulting metric is then used by an MLSE decoder such as a Viterbi decoder to decode the received data.

    摘要翻译： 描述了用于对卷积编码的预编码数据进行解码的解码器。 预编码序列由两个子序列t和b组成; t的值对应于特定时间的卷积编码器状态。 产生子序列t具有特定值ti的先验概率Pr（ti）。 在优选实施例中，施加到包括ti的测试序列的度量函数然后通过加上（sigma2 /α2）ln（Pr（ti））而被偏置，其中α2是发送数据的每符号的信号平均能量，σ2 是通过数据传输的通道所添加的噪声的方差。 所得到的度量然后被诸如维特比解码器之类的MLSE解码器用于解码所接收的数据。

    APPARATUS AND METHOD FOR MULTIPLE WIRELESS SERVICE COEXISTENCE
    8.
    发明申请
    APPARATUS AND METHOD FOR MULTIPLE WIRELESS SERVICE COEXISTENCE 审中-公开
    多种无线服务共享的装置和方法

    公开(公告)号：US20110249603A1

    公开(公告)日：2011-10-13

    申请号：US12815347

    申请日：2010-06-14

    申请人： Roland R. Rick ,  Michael Kohlmann ,  Mark Vernon Lane ,  Joel Benjamin Linsky ,  Vincent Knowles Jones

    发明人： Roland R. Rick ,  Michael Kohlmann ,  Mark Vernon Lane ,  Joel Benjamin Linsky ,  Vincent Knowles Jones

    IPC分类号： G08C17/00

    CPC分类号： H04B7/0825 ,  H04B1/006 ,  H04B1/40 ,  H04B7/061 ,  H04W84/12 ,  H04W88/06

    摘要： An apparatus and method for multiple wireless service coexistence comprising: engaging a first switch to connect a first service transmitter to an antenna through a first filter path and to disconnect a first service receiver from the antenna; engaging a second switch to connect a second service receiver to the antenna through a second filter path and to disconnect a second service transmitter from the antenna; enabling transmit power control on the first service transmitter; and performing one or both of the following: a) transmitting a first service transmit signal through the first filter path to the antenna with high rejection of the band of a second service; b) receiving a second service receive signal through the second filter path from the antenna with high rejection of the band of a first service.

    摘要翻译： 一种用于多个无线服务共存的装置和方法，包括：使第一交换机通过第一滤波器路径将第一服务发射机连接到天线，并将第一服务接收机与天线断开连接; 接合第二开关以通过第二滤波器路径将第二服务接收器连接到所述天线，并且从所述天线断开第二服务发射机; 实现第一业务发射机的发射功率控制; 以及执行以下中的一个或两个：a）以第二服务的频带的高拒绝将第一服务发射信号通过第一滤波器路径发送到天线; b）通过来自天线的第二滤波器路径接收具有第一服务的频带的高拒绝的第二服务接收信号。

    Parameter estimator configured to distinguish between peaks and sidelobes of correlation function
    9.
    发明授权
    Parameter estimator configured to distinguish between peaks and sidelobes of correlation function 有权
    参数估计器被配置为区分相关函数的峰值和旁瓣

    公开(公告)号：US07308022B2

    公开(公告)日：2007-12-11

    申请号：US10060885

    申请日：2002-01-29

    申请人： Roland R. Rick ,  Messay Amerga ,  Jeremy M. Stein ,  Ivan Fernandez-Corbaton

    发明人： Roland R. Rick ,  Messay Amerga ,  Jeremy M. Stein ,  Ivan Fernandez-Corbaton

    IPC分类号： H04B1/00

    CPC分类号： G01S5/0215 ,  G01S5/0221 ,  G01S19/22 ,  H04B1/70755 ,  H04B1/7117

    摘要： A parameter estimator for estimating one or more parameter(s) from a signal is described. A correlation function is derived from the signal, and the correlation function analyzed to determine if one or more first peak(s) are present, and, if so, distinguishable from the sidelobe(s) of a second peak. If the one or more first peak(s) are present and distinguishable from the sidelobe(s) of the second peak, the one or more parameter(s) are estimated from the one or more first peak(s). If the one or more first peak(s) are not present, or, if present, are not distinguishable from the sidelobe(s) of the second peak, the one or more parameter(s) are estimated from the second peak. The parameter estimator may be employed in a subscriber station to estimate a parameter such as the time of arrival of one or more base station or sector pilot signals in a wireless communication system. This information may be utilized in an overall advanced forward link trilateration (AFLT) process for estimating the location of the subscriber station.

    摘要翻译： 描述了用于从信号估计一个或多个参数的参数估计器。 从信号中导出相关函数，分析相关函数以确定是否存在一个或多个第一峰，如果是，则与第二峰的旁瓣区分开。 如果一个或多个第一峰存在并且可与第二峰的旁瓣区分开，则从一个或多个第一峰估计一个或多个参数。 如果一个或多个第一峰不存在，或者如果存在，则不能与第二峰的旁瓣区分开，则从第二峰估计一个或多个参数。 可以在用户台中使用参数估计器来估计诸如无线通信系统中的一个或多个基站或扇区导频信号的到达时间的参数。 该信息可以用于用于估计用户台的位置的总体高级前向链路三边测量（AFLT）过程。