DOA estimation for noncircular signals : performance bounds and algorithms - Archive ouverte HAL Accéder directement au contenu
Chapitre D'ouvrage Année : 2006

DOA estimation for noncircular signals : performance bounds and algorithms

Résumé

There is considerable literature about second-order statistics-based algorithms for estimating DOAs of narrowband sources impinging on an array of sensors. These algorithms, however, have been examined only under the complex circular Gaussian assumption. The interest in these algorithms stems from a large number of applications, including mobile communications systems. In this application, after frequency downshifting the sensor signals to baseband, the in-phase and quadrature components are paired to obtain complex signals. Complex noncircular signals, such as binary phase shift keying (BPSK) and offset quadrature phase shift keying (OQPSK) modulated signals, are often used. Naturally, the second-order algorithms devoted to complex circular signals relying on the positive definite Hermitian covariance matrix (E(YtYtH) can be used in this context. Because the second-order statistical characteristics are also contained in the complex symmetric unconjugated spatial covariance matrix (E(YtYtT) for noncircular signals, a potential performance improvement ought to be obtained if these two covariance matrices are used. However, only a few contributions [3 5] have been devoted to noncircular signals in DOA estimation in the last decade
Fichier principal
Vignette du fichier
DOA noncircular.pdf (520.79 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01331212 , version 1 (13-06-2016)

Identifiants

  • HAL Id : hal-01331212 , version 1

Citer

Jean-Pierre Delmas, Habti Abeida. DOA estimation for noncircular signals : performance bounds and algorithms. Advances in direction-of-arrival estimation, Artech House, pp.161 - 190, 2006, 978-1-59693-004-9. ⟨hal-01331212⟩
86 Consultations
42 Téléchargements

Partager

Gmail Facebook X LinkedIn More