Second-order DOA estimation from digitally modulated signals

被引：0

作者：

Villares, J ^{[1
]}

Vázquez, G ^{[1
]}

机构：

[1] Tech Univ Catalunya, UPC, Dept Signal Theory & Commun, Barcelona 08034, Spain

来源：

CONFERENCE RECORD OF THE THIRTY-SEVENTH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS & COMPUTERS, VOLS 1 AND 2 | 2003年

关键词：

D O I：

暂无

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

The paper deals with the problem of estimating the direction-of-arrival (DOA) of multiple digitally-modulated sources. This problem arises naturally when studying positioning applications in the context of cellular systems. The formulation of the optimal second-order tracker is found to depend on the transmitted symbols distribution for medium-to-high signal-to-noise ratios (SNR). Simulations show that the common Gaussian assumption yields significant losses for moderate SNRs if the sources imping from similar angles and/or the aperture is short. In these circumstances the multiuser interference (MUI) plays a prominent role and MUI-resistant techniques are evaluated.

引用

页码：1868 / 1872

页数：5

共 12 条

[1]

Kay M., 1993, FUNDAMENTALS STAT SI

[2]

Mengali U., 1997, Applications of Communications Theory

[3]

MENGALI U, 2001, SYNCHRONIZATION TECH

[4]

Ottersten B., 1993, Radar array processing, P99

[5]

RIBA J, P IEEE ICASSP 2001 S

[6] MUSIC, MAXIMUM-LIKELIHOOD, AND CRAMER-RAO BOUND [J].

STOICA, P ;

NEHORAI, A .

IEEE TRANSACTIONS ON ACOUSTICS SPEECH AND SIGNAL PROCESSING, 1989, 37 (05) :720-741

[7] Parameter estimation problems with singular information matrices [J].

Stoica, P ;

Marzetta, TL .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2001, 49 (01) :87-90

[8]

STOICA P, 1990, IEEE T ACOUSTICS SPE, V38

[9]

Vazquez G., 2000, SIGNAL PROCESSING AD, V2

[10]

VILLARES J, 2003, UNPUB IEEE T SIGN PR

← 1 2 →