Title :
A new adaptive time delay estimation algorithm with local variable gain for evoked potential latency change estimation
Author :
Kong, Xuan ; Qiu, Tianshuang
Author_Institution :
Dept. of Electr. Eng., Northern Illinois Univ., DeKalb, IL, USA
fDate :
29 Oct-1 Nov 1998
Abstract :
A new adaptive time delay estimation algorithm with variable adaptive gain is proposed to estimate the latency changes in evoked potentials. The variable adaptive gain is proportional to the local SNR of the input EP signal within each sweep and it is normalized by the average power of the EP signal. The results of computer simulation show that the adaptive algorithm with the variable adaptive gain is stable and has a better convergence and smaller latency change estimation errors
Keywords :
adaptive estimation; adaptive filters; bioelectric potentials; delay estimation; iterative methods; least mean squares methods; medical signal processing; numerical stability; adaptive time delay estimation algorithm; computer simulation; convergence; direct LMS adaptive filter; evoked potential; latency change estimation; local SNR; local variable gain; signal model; smaller estimation errors; variable adaptive gain; Additive noise; Convergence; Delay effects; Delay estimation; Gain; Integrated circuit modeling; Integrated circuit noise; Least squares approximation; Signal processing; Signal processing algorithms;
Conference_Titel :
Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE
Conference_Location :
Hong Kong
Print_ISBN :
0-7803-5164-9
DOI :
10.1109/IEMBS.1998.747009
