Title :
A new architecture of adaptive line enhancer
Author :
Baochun, Hou ; Junying, Hui
Author_Institution :
Harbin Shipbuilding Eng. Inst., China
Abstract :
Adaptive line enhancer (ALE) is widely used for enhancing the sinusoids corrupted by noise or estimating and tracking the unknown frequencies of the sinusoids This paper presents a new architecture of ALE, called ALECA. It is shown that the new processor possesses the equivalent ARMA structure. Better convergence and lower sensitivity to the adaptive parameter of the adaptive transversal filter are observed in the ALECA. The hardware implementation shows that it substantially improves the processing gain of conventional ALE
Keywords :
adaptive filters; digital signal processing chips; filtering and prediction theory; parallel architectures; signal detection; white noise; ALECA; adaptive line enhancer; adaptive transversal filter; convergence; equivalent ARMA structure; processing gain; sensitivity; sinusoids; unknown frequencies; Acoustical engineering; Adaptive filters; Background noise; Convergence; Delay effects; Least squares approximation; Line enhancers; Noise cancellation; Transversal filters; Underwater acoustics;
Conference_Titel :
Circuits and Systems, 1991. Conference Proceedings, China., 1991 International Conference on
Conference_Location :
Shenzhen
DOI :
10.1109/CICCAS.1991.184496
