Improvement of estimation accuracy of wideband DOA estimation "TOPS"

Kazuki Okane, Shohei Ikedat, Tomoaki Ohtsuki

研究成果: Paper査読

1 被引用数 (Scopus)

抄録

In this paper, a new direction-of-arrival (DOA) estimation method for wideband signals is introduced. This new method is based on test of orthogonality of projected subspaces (TOPS) and estimated DOAs by measuring the orthogonal relation between the signal and noise subspaces of multiple frequency components of the signals. Unlike other coherent wideband methods, such as the coherent signal subspace method (CSSM), the new method does not require any preprocessing for initial values of DOA, like TOPS. The resolution and root mean square error (RMSE) of the proposed method is compared with those of CSSM, TOPS and test of orthogonality of frequency subspaces (TOFS) through computer simulations. The simulation results show that the resolution of the proposed method is better than that of TOPS in low and mid signal-to-noise ratio (SNR) ranges. They also show that RMSE of the proposed method is better than that of TOPS in mid SNR ranges.

本文言語English
ページ98-104
ページ数7
出版ステータスPublished - 2009
イベントAsia-Pacific Signal and Information Processing Association 2009 Annual Summit and Conference, APSIPA ASC 2009 - Sapporo, Japan
継続期間: 2009 10月 42009 10月 7

Other

OtherAsia-Pacific Signal and Information Processing Association 2009 Annual Summit and Conference, APSIPA ASC 2009
国/地域Japan
CitySapporo
Period09/10/409/10/7

ASJC Scopus subject areas

  • コンピュータ ネットワークおよび通信
  • 情報システム
  • 電子工学および電気工学
  • 通信

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