System Identification Utilizing the Circular-Based Frequency-Domain Adaptive Filter

Shigenori KINJO
Hiroshi OCHI
Yoshitatsu TAKARA

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E75-A    No.9    pp.1170-1173
Publication Date: 1992/09/25
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Digital Signal Processing
digital signal processing,  frequency-domain adaptive filters,  circular convolution,  system identification,  

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In case of the system identification problem, such as an echo canceller, estimated impulse response obtained by the frequency-domain adaptive filter based on the circular convolution has estimation error because the unknown system is based on the linear convolution in the time domain. In this correspondence, we consider a sufficient condition to reduce the estimation error.