A parametric blind subspace identification: robustness issue

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Lisa Perros-Meilhac, Eric Moulines, Pascal Chevalier, Pierre Duhamel

Published: 1999, Last Modified: 25 Jan 2026IEEE Commun. Lett. 1999EveryoneRevisionsBibTeXCC BY-SA 4.0
Abstract: Subspace techniques became in recent years a popular tool for blind identification of single-input multiple output finite-impulse response (SIMO-FIR) systems. However, a serious drawback of these methods is high sensitivity to the order modeling errors. In this contribution, we show that a parametric approach of subspace methods, i.e., exploiting the specular structure of the propagation channel, is intrinsically robust to channel order overestimation.