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

Kazuki Okane, Tomoaki Ohtsuki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publication2010 IEEE International Conference on Communications, ICC 2010
DOIs
Publication statusPublished - 2010 Aug 13
Event2010 IEEE International Conference on Communications, ICC 2010 - Cape Town, South Africa
Duration: 2010 May 232010 May 27

Publication series

NameIEEE International Conference on Communications
ISSN (Print)0536-1486

Other

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

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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