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CLC number: TN911

On-line Access: 2016-10-08

Received: 2015-11-28

Revision Accepted: 2016-06-06

Crosschecked: 2016-09-20

Cited: 0

Clicked: 3581

Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Wei Xia

http://orcid.org/0000-0001-6443-8704

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Frontiers of Information Technology & Electronic Engineering  2016 Vol.17 No.10 P.1067-1073

http://doi.org/10.1631/FITEE.1500417


An enhanced mixed modulated Lagrange explicit time delay estimator with noisy input


Author(s):  Wei Xia, Ju-lei Zhu, Wen-ying Jiang, Ling-feng Zhu

Affiliation(s):  School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China; more

Corresponding email(s):   wx@uestc.edu.cn, zjluestc@163.com, jiangwy@yeah.net, zlf1050@outlook.com

Key Words:  Time delay estimation, Adaptive filter, Noisy input, Modulated Lagrange, Unbiased impulse response estimation


Wei Xia, Ju-lei Zhu, Wen-ying Jiang, Ling-feng Zhu. An enhanced mixed modulated Lagrange explicit time delay estimator with noisy input[J]. Frontiers of Information Technology & Electronic Engineering, 2016, 17(10): 1067-1073.

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Abstract: 
The mixed modulated Lagrange explicit time delay estimation (MMLETDE) algorithm provides an efficient time delay estimation between narrowband or sinusoidal signals. However, it does not explicitly consider the additive measurement noise at the input, which actually exists in practice. Aiming at this issue, an enhanced MMLETDE algorithm is proposed for noisy inputs based on the unbiased impulse response estimation technique, assuming that the noise power ratio is known {a priori}. Simulation results show that for narrowband signals or sinusoids over a wide frequency range, the proposed algorithm with a small filter order performs well in moderate and high noise scenarios.

考虑输入噪声的混合调制拉格朗日明确时延估计改进算法

概要:混合调制拉格朗日明确时延估计(mixed modulated Lagrange explicit time delay estimation, MMLETDE)算法可对窄带信号或正弦信号提供有效的时延估计。然而,该算法未考虑实际存在于输入端的加性观测噪声。针对该问题,本文利用已知噪声功率比,基于无偏脉冲响应估计技术,提出MMLETDE的一种改进算法。仿真结果表明,在中、高噪声场景下,该改进算法以小的滤波器阶数,实现了对窄带信号或较大频率范围内的正弦信号良好的时延估计。

关键词:时延估计;自适应滤波器;噪声输入;调制拉格朗日法;无偏脉冲响应估计

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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