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    • 9. 发明申请
    • METHOD AND APPARATUS FOR PILOT SIGNAL ESTIMATION USING KALMAN FILTERING
    • 使用卡尔曼滤波的引导信号估计的方法和装置
    • WO2003105429A1
    • 2003-12-18
    • PCT/US2003/017893
    • 2003-06-05
    • QUALCOMM, INCORPORATED
    • ABRISHAMKAR, FarrokhBUTLER, Brian K.MOHSENI, Mohammad, JafarKREUTZ-DELGADO, Kenneth
    • H04L25/02
    • H04B1/7101H04B2201/70701H04L25/03076
    • A system is disclosed for use in a wireless communication system to provide an estimated pilot signal. The system includes a receiver and a front-end processing and despreading component in electronic communication with the receiver for despreading a CDMA signal. A pilot estimation component is in electronic communication with the front-end processing and despreading component for estimating an original pilot signal using a Kalman filter to produce a pilot estimate. A demodulation component is in electronic communication with the pilot estimation component and the front-end processing and despreading component for providing demodulated data symbols. The Kalman filter is configured by an offline system identification process that calculates parameters using a maximum likelihood parameter estimation and generates state estimates using the Kalman filter. The calculating and generating are iteratively performed to train the Kalman filter for real-time operation.
    • 公开了一种在无线通信系统中用于提供估计的导频信号的系统。 该系统包括接收机和与接收机进行电子通信的前端处理和解扩部件,用于解扩CDMA信号。 导频估计部件与前端处理和解扩部件进行电子通信,用于使用卡尔曼滤波器估计原始导频信号以产生导频估计。 解调部件与导频估计部件以及用于提供解调数据符号的前端处理和解扩部件进行电子通信。 卡尔曼滤波器由离线系统识别过程配置,该过程使用最大似然参数估计来计算参数,并使用卡尔曼滤波器生成状态估计。 迭代执行计算和生成以训练卡尔曼滤波器进行实时操作。