TY - GEN
T1 - Underdetermined DOA estimation by the non-linear music exploiting higher-order moments
AU - Sugimoto, Yuya
AU - Miyabe, Shigeki
AU - Yamada, Takeshi
AU - Makino, Shoji
AU - Juang, Biing Hwang
N1 - Publisher Copyright:
© 2012, Institute of Electrical and Electronics Engineers Inc. All rights reserved.
PY - 2012
Y1 - 2012
N2 - This paper describes a new approach for extending MUltiple SIgnal Classification (MUSIC) to underdetermined direction-of-arrival (DOA) estimation with high resolution by exploiting higher-order moments. The proposed method maps the observed signals nonlinearly onto a space of expanded dimensions, in which signal statistics are analyzed. The covariance matrix in the higher-dimensional space corresponds to the higher-order cross moment matrix in the original space of the observed signals. Since the dimensionality of the noise subspace is increased by the mapping, the proposed method achieves higher resolution DOA estimation than the standard MUSIC, and also offers the ability to estimate DOAs in underdetermined conditions. We compared the characteristic of the proposed method with that of the conventional 2q-MUSIC utilizing higher-order cumulants theoretically and experimentally.
AB - This paper describes a new approach for extending MUltiple SIgnal Classification (MUSIC) to underdetermined direction-of-arrival (DOA) estimation with high resolution by exploiting higher-order moments. The proposed method maps the observed signals nonlinearly onto a space of expanded dimensions, in which signal statistics are analyzed. The covariance matrix in the higher-dimensional space corresponds to the higher-order cross moment matrix in the original space of the observed signals. Since the dimensionality of the noise subspace is increased by the mapping, the proposed method achieves higher resolution DOA estimation than the standard MUSIC, and also offers the ability to estimate DOAs in underdetermined conditions. We compared the characteristic of the proposed method with that of the conventional 2q-MUSIC utilizing higher-order cumulants theoretically and experimentally.
KW - Higher-order statistics
KW - Microphone array
KW - MUSIC
KW - Underdetermined DOA estimation
UR - http://www.scopus.com/inward/record.url?scp=84957657961&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84957657961&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84957657961
T3 - International Workshop on Acoustic Signal Enhancement, IWAENC 2012
BT - International Workshop on Acoustic Signal Enhancement, IWAENC 2012
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - International Workshop on Acoustic Signal Enhancement, IWAENC 2012
Y2 - 4 September 2012 through 6 September 2012
ER -