講演名 2006-04-21
Estimation of the Signal-To-Interference Ratio Based on Normalized Cross-Correlation with Symmetric Leaky Blocking Matrices in Adaptive Microphone Arrays(画像信号処理及び一般)
,
PDFダウンロードページ PDFダウンロードページへ
抄録(和)
抄録(英) 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 34 dB to 6 dB for a true SIR of 0 dB.
キーワード(和)
キーワード(英)
資料番号 SIP2006-11,IE2006-11
発行日

研究会情報
研究会 SIP
開催期間 2006/4/14(から1日開催)
開催地(和)
開催地(英)
テーマ(和)
テーマ(英)
委員長氏名(和)
委員長氏名(英)
副委員長氏名(和)
副委員長氏名(英)
幹事氏名(和)
幹事氏名(英)
幹事補佐氏名(和)
幹事補佐氏名(英)

講演論文情報詳細
申込み研究会 Signal Processing (SIP)
本文の言語 ENG
タイトル(和) Estimation of the Signal-To-Interference Ratio Based on Normalized Cross-Correlation with Symmetric Leaky Blocking Matrices in Adaptive Microphone Arrays(画像信号処理及び一般)
サブタイトル(和)
タイトル(英) Estimation of the Signal-To-Interference Ratio Based on Normalized Cross-Correlation with Symmetric Leaky Blocking Matrices in Adaptive Microphone Arrays
サブタイトル(和)
キーワード(1)(和/英)
第 1 著者 氏名(和/英) / Thanh Phong HUA
第 1 著者 所属(和/英)
NEC Media and Information Research Laboratories:On leave from Universite de Rennes 1
発表年月日 2006-04-21
資料番号 SIP2006-11,IE2006-11
巻番号(vol) vol.106
号番号(no) 21
ページ範囲 pp.-
ページ数 6
発行日