An Adaptive Time Delay Estimator Based on ETDE Algorithm with Noisy Measurements  

作　　者：XIA Wei JIANG Wenying ZHU Lingfeng 

机构地区：[1]School of Electronic Engineering, University of Electronic Science and Technology of China

出　　处：《Chinese Journal of Electronics》2017年第4期760-767,共8页电子学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.61101173,No.61371184)

摘　　要：We address the problem of adaptive time delay estimation with noisy measurements. We develop a computationally efficient adaptive time delay estimator based on Explicit time delay estimation(ETDE) algorithm,by applying the unbiased impulse response estimation approach. In this algorithm, a weighted error function is derived, and the time delay is explicitly parameterized in the filter coefficients and iteratively updated directly by utilizing the modified error function. Simulations validate the performance of the proposed algorithm for colored input and low signal-to-noise ratio scenarios.We address the problem of adaptive time delay estimation with noisy measurements. We develop a computationally efficient adaptive time delay estimator based on Explicit time delay estimation（ETDE） algorithm,by applying the unbiased impulse response estimation approach. In this algorithm, a weighted error function is derived, and the time delay is explicitly parameterized in the filter coefficients and iteratively updated directly by utilizing the modified error function. Simulations validate the performance of the proposed algorithm for colored input and low signal-to-noise ratio scenarios.

关 键 词：Adaptive filter Time delay estimate Noisy measurements Colored input 

分 类 号：TN713[电子电信—电路与系统] TN911.23