Title :
Unbiased Adaptive Time-delay Estimation in Noisy Environments
Author :
Wen, Jing ; Li, Ping ; Wen, Yumei
Author_Institution :
Coll. of Opto-Electron. Eng., Chongqing Univ.
Abstract :
When the inputs are blurred with noises, the LMSTDE actually gives the biased estimate. In this paper, we propose a new method of time delay estimation to accurately estimate the time delay in the presence of additive noise. By analyzing the cost function of the LMS algorithm, we construct a new cost function through which an optimal unbiased estimate of the time delay can be obtained. According to the results of the simulation, the method is proved to be of good performance and be available in the engineering applications
Keywords :
adaptive estimation; adaptive filters; delays; least mean squares methods; adaptive filter; cost function; least mean square time delay estimation; unbiased adaptive time delay estimation; Adaptive filters; Additive noise; Algorithm design and analysis; Autocorrelation; Cost function; Delay effects; Delay estimation; Least squares approximation; Parameter estimation; Working environment noise; adaptive filter; time delay estimation; unbiased estimate;
Conference_Titel :
Control, Automation, Robotics and Vision, 2006. ICARCV '06. 9th International Conference on
Conference_Location :
Singapore
Print_ISBN :
1-4244-0341-3
Electronic_ISBN :
1-4214-042-1
DOI :
10.1109/ICARCV.2006.345139
