The role of subspace swap in maximum likelihood estimation performance breakdown

被引：3

作者：

Johnson, Ben A. ^{[1
]}

Abramovich, Yuri I. ^{[1
]}

Mestre, Xavier ^{[1
]}

机构：

[1] RLM Pty Ltd, Edinburgh, Australia

来源：

2008 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING, VOLS 1-12 | 2008年

关键词：

direction of arrival estimation; maximum likelihood estimation; nonuniformly spaced arrays;

D O I：

10.1109/ICASSP.2008.4518148

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Maximum likelihood estimation techniques demonstrate "performance breakdown" at low signal-to-noise ratios where observed estimation errors rapidly depart from the Cramer-Rao bound below a threshold SNR. Rather than rely on the classic asymptotic analysis for prediction of that threshold, Random Matrix Theory (RMT) analysis is employed. Both analytic predictions and direct Monte-Carlo simulations demonstrate that the threshold value can be reliably predicted even for small sample support far removed from classic asymptotic assumptions.

引用

页码：2469 / +

页数：2

共 20 条

[1]

ABRAMOVICH YI, 2007, P IEEE INT C AC SPEE, V2, P1049

[2] GLRT-based threshold detection-estimation performance improvement and application to uniform circular antenna arrays [J].