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    MULTIPATH PARAMETER ESTIMATION IN SPREAD-SPECTRUM COMMUNICATIONS SYSTEMS
    1.
    发明申请
    MULTIPATH PARAMETER ESTIMATION IN SPREAD-SPECTRUM COMMUNICATIONS SYSTEMS 审中-公开
    广播通信系统中的多路径参数估计

    公开(公告)号：WO0211300A3

    公开(公告)日：2002-07-25

    申请号：PCT/US0123661

    申请日：2001-07-27

    Applicant: RF MICRO DEVICES INC

    Inventor： SHAN PEIJUN ,  KING ERIC J

    IPC: H04B1/7113 ,  H04B1/7115 ,  H04B1/7117 ,  H04B1/7183 ,  H04B1/707 ,  H04L25/02

    CPC classification number: H04B1/7115 ,  H04B1/7113 ,  H04B1/7117 ,  H04B1/7183

    Abstract: A training circuit includes resources for processing magnitude and phase information received in a main propagation path signal with magnitude and phase information concurrently received in a secondary propagation path signal to determine values for magnitude, phase, and time offset of the secondary propagation path signal relative to the main propagation path signal. The training circuit can identify time offsets less than or greater than a symbol period, for either leading or lagging secondary path time offsets. A phase difference circuit, further included in the training circuit, determines a phase offset for the secondary propagation path signal relative to the main propagation path signal using main and secondary propagation path symbol phase values in combination with the time offset information. The relative magnitude, phase, and time information represents a characterization of the secondary propagation path with respect to the main propagation path.

    Abstract translation: 训练电路包括用于处理在主传播路径信号中接收的幅度和相位信息的资源，其中幅度和相位信息在次传播路径信号中同时接收，以确定次传播路径信号相对于第二传播路径信号的幅度，相位和时间偏移的值 主传播路径信号。 训练电路可以识别小于或大于符号周期的时间偏移，用于前导或滞后次要路径时间偏移。 进一步包括在训练电路中的相位差电路使用与时间偏移信息相结合的主传播路径符号相位值和次传播路径符号相位值来确定相对于主传播路径信号的次传播路径信号的相位偏移。 相对幅度，相位和时间信息表示相对于主传播路径的次传播路径的表征。

    METHOD AND APPARATUS FOR MULTIPATH PARAMETER ESTIMATION IN SPREAD-SPECTRUM COMMUNICATIONS SYSTEMS
    2.
    发明申请
    METHOD AND APPARATUS FOR MULTIPATH PARAMETER ESTIMATION IN SPREAD-SPECTRUM COMMUNICATIONS SYSTEMS 审中-公开
    扩频通信系统中多路径参数估计的方法与装置

    公开(公告)号：WO0211304A3

    公开(公告)日：2002-07-04

    申请号：PCT/US0123726

    申请日：2001-07-27

    Applicant: RF MICRO DEVICES INC

    Inventor： SHAN PEIJUN ,  KING ERIC J

    IPC: H04B1/7107 ,  H04B1/7113 ,  H04B1/7115 ,  H04B1/7117 ,  H04B1/7183 ,  H04B1/707

    CPC classification number: H04B1/7115 ,  H04B1/7107 ,  H04B1/7113 ,  H04B1/7117 ,  H04B1/7183

    Abstract: A training method provides and advantageous technique for estimating secondary propagation path parameters based on learming propagation path characteristics for a selected number of secondary propagation path signals. In a multipath environment, a received radio signal comprises multiple received signals, each received through a different signal propagation path. The training method includes a course search technique that yields initial identification of the significant secondary path signals, and further includes techniques for characterizing the magnitude, phase, and path delay, all relative to the main path signal for secondary path signal of interest. The training method employs differential decoding and sample phase slicing to improve parameter estimation accuracy, and further includes phase correlation operations to determine secondary path delay, where such delays may have spreads that exceed a transmitted signal symbol period.

    Abstract translation: 训练方法提供了一种基于用于所选次数传播路径信号的二次传播路径特性来估计二次传播路径参数的有利技术。 在多径环境中，接收的无线电信号包括多个接收信号，每个接收信号通过不同的信号传播路径接收。 训练方法包括产生重要二次路径信号的初始识别的课程搜索技术，并且还包括用于表征幅度，相位和路径延迟的技术，全部相对于感兴趣的辅助路径信号的主路径信号。 训练方法采用差分解码和采样相位切片来提高参数估计精度，并且还包括相位相关运算以确定次级路径延迟，其中这样的延迟可能具有超过发射信号符号周期的扩展。

    Multipath parameter estimation in spread-spectrum communications systems
    6.
    发明专利
    Multipath parameter estimation in spread-spectrum communications systems 未知

    公开(公告)号：AU7804001A

    公开(公告)日：2002-02-13

    申请号：AU7804001

    申请日：2001-07-27

    Applicant: RF MICRO DEVICES INC

    Inventor： SHAN PEIJUN ,  KING ERIC J

    IPC: H04B1/7113 ,  H04B1/7115 ,  H04B1/7117 ,  H04B1/7183

    Abstract: A training circuit includes resources for processing magnitude and phase information received in a main propagation path signal with magnitude and phase information concurrently received in a secondary propagation path signal to determine values for magnitude, phase, and time offset of the secondary propagation path signal relative to the main propagation path signal. Differential decoding circuitry within the training circuit provides a correlation circuit, also in the training circuit, with differentially decoded sequences of symbol phase values derived from concurrent main and secondary signal propagation path symbol phase value sequences provided to the training circuit by an associated communications receiver. Operating on theses phase value sequences, the correlation circuit determines the time offset between the main and secondary propagation path signals based on determining the correspondence between symbol phase values received via the main propagation path signal and those concurrently received via the secondary propagation path signal. The training circuit can identify time offsets less than or greater than a symbol period, for either leading or lagging secondary path time offsets. A phase difference circuit, further included in the training circuit, determines a phase offset for the secondary propagation path signal relative to the main propagation path signal using main and secondary propagation path symbol phase values in combination with the time offset information. The relative magnitude, phase, and time information represents a characterization of the secondary propagation path with respect to the main propagation path. This characterization information may be used to improve reception performance or cancel multipath interference.

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