A parametric blind subspace identification: Robustness issue

Subspace techniques became in recent years a popular tool for blind identif ication of single-input multiple output finite-impulse response (SIMO-FIR) systems. However, a serious drawback of these methods is high sensitivity t o the order modeling errors. In this contribution, we show that a parametri c approach of subspace methods, i.e, exploiting the specular structure of t he propagation channel, is intrinsically robust to channel order overestima tion.