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Paper Abstract and Keywords
Presentation 2006-04-21 16:20
Estimation of the Signal-To-Interference Ratio Based on Normalized Cross-Correlation with Symmetric Leaky Blocking Matrices in Adaptive Microphone Arrays
Thanh Phong Hua (Univ. de Rennes/NEC), Akihiko Sugiyama (NEC), Regine Le Bouquin Jeannes, Gerard Faucon (Univ. de Rennes)
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes estimation of the signal-to-interference ratio (SIR)
based on normalized cross-correlation with symmetric leaky blocking matrices for adaptive microphone arrays. Analysis of the normalized cross-correlation (NCC) shows that it is a function of the actual SIR and the phase difference between its inputs. This function gives its optimum SIR estimation when the phase difference is maximized for the interference and minimized for the target. Symmetric leaky blocking matrices are designed and optimized to approximately satisfy this condition. The actual and the theoretical NCCs show good agreement with each other at different SIRs using white signals. Simulation results show that the SIR estimation by the proposed method is close to its optimum behavior, i.e. the NCC equal to 1 for the target and equal to -1 for the interference. Applying the SIR estimation to target detection,
a constant threshold can be set for different DOAs and input signals in the proposed method. The maximum estimation error is reduced by more than 34dB to 6dB for a true SIR of 0dB.
Keyword (in Japanese) (See Japanese page) 
(in English) microphone array / adaptation / mode control / correlation / blocking matrix / phase / leak /  
Reference Info. IEICE Tech. Rep., vol. 106, no. 21, SIP2006-11, pp. 61-66, April 2006.
Paper # SIP2006-11 
Date of Issue 2006-04-14 (SIP, IE) 
ISSN Print edition: ISSN 0913-5685
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Conference Information
Committee IE SIP  
Conference Date 2006-04-21 - 2006-04-21 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SIP 
Conference Code 2006-04-IE-SIP 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Estimation of the Signal-To-Interference Ratio Based on Normalized Cross-Correlation with Symmetric Leaky Blocking Matrices in Adaptive Microphone Arrays 
Sub Title (in English)  
Keyword(1) microphone array  
Keyword(2) adaptation  
Keyword(3) mode control  
Keyword(4) correlation  
Keyword(5) blocking matrix  
Keyword(6) phase  
Keyword(7) leak  
Keyword(8)  
1st Author's Name Thanh Phong Hua  
1st Author's Affiliation NEC (Univ. de Rennes/NEC)
2nd Author's Name Akihiko Sugiyama  
2nd Author's Affiliation NEC (NEC)
3rd Author's Name Regine Le Bouquin Jeannes  
3rd Author's Affiliation University of Rennes 1 (Univ. de Rennes)
4th Author's Name Gerard Faucon  
4th Author's Affiliation University of Rennes 1 (Univ. de Rennes)
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Speaker Author-1 
Date Time 2006-04-21 16:20:00 
Presentation Time 25 minutes 
Registration for SIP 
Paper # SIP2006-11, IE2006-11 
Volume (vol) vol.106 
Number (no) no.21(SIP), no.22(IE) 
Page pp.61-66 
#Pages
Date of Issue 2006-04-14 (SIP, IE) 


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