Title :
An implementation of high-speed adaptive noise canceller with parallel block structure
Author :
Benjangkaprasert, Chawalit ; Kikuchi, Katsumi ; Takahashi, Nobuaki ; Takebe, Tsuyoshi
Author_Institution :
King Mongkut´´s Inst. of Technol., Bangkok, Thailand
Abstract :
An adaptive algorithm for detecting a single sinusoid of unknown frequency corrupted by Gaussian noise has been proposed by Nishimura et al. using IIR bandpass filter with a variable center frequency[1] . The filter has the parallel block structure for fast processing. However, the algorithm has two problems: one is that it has several input frequencies making it impossible to converge; another is that the convergence rate cannot be higher than that of the scalar structure. In this paper, the causes of these problems are investigated and a new algorithm is proposed to solve these problems. Simulation results are given to illustrate the performance of the proposed algorithm
Keywords :
Gaussian noise; IIR filters; adaptive filters; adaptive signal detection; band-pass filters; digital filters; filtering theory; interference suppression; Gaussian noise; IIR bandpass filter; convergence rate; high-speed adaptive noise canceller; parallel block structure; variable center frequency; Adaptive algorithm; Adaptive signal detection; Band pass filters; Convergence; Digital filters; Frequency; Gaussian noise; IIR filters; Noise cancellation; Transfer functions;
Conference_Titel :
Circuits and Systems, 1994. APCCAS '94., 1994 IEEE Asia-Pacific Conference on
Conference_Location :
Taipei
Print_ISBN :
0-7803-2440-4
DOI :
10.1109/APCCAS.1994.514579
