Resolution improvement of wideband direction-of-arrival estimation "Squared-TOPS"

Kazuki Okane, Tomoaki Ohtsuki

研究成果: Conference contribution

10 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 uses both the signal subspace projection and the reference frequency selection in squared test of orthogonality of projected subspaces (Squared-TOPS) and estimates DOAs by measuring the orthogonal relation between the signal and noise subspaces of multiple frequency components of the signals. The signal subspace projection and the reference frequency selection reduce some error terms in the matrix used for testing the orthogonality between signal subspaces and noise subspaces. The resolution and root mean square error (RMSE) of the proposed method are compared with those of the coherent signal subspace method (CSSM), test of orthogonality of projected subspaces (TOPS) and test of orthogonality of frequency subspaces (TOFS) through computer simulations, respectively. The simulation results show that the resolution of the proposed method is better than that of the others except CSSM in whole signal-to-noise ratio (SNR) ranges. They also show that RMSE of the proposed method is the best in whole SNR ranges.

本文言語English
ホスト出版物のタイトル2010 IEEE International Conference on Communications, ICC 2010
DOI
出版ステータスPublished - 2010 8月 13
イベント2010 IEEE International Conference on Communications, ICC 2010 - Cape Town, South Africa
継続期間: 2010 5月 232010 5月 27

出版物シリーズ

名前IEEE International Conference on Communications
ISSN(印刷版)0536-1486

Other

Other2010 IEEE International Conference on Communications, ICC 2010
国/地域South Africa
CityCape Town
Period10/5/2310/5/27

ASJC Scopus subject areas

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

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