سال انتشار: ۱۳۸۶

محل انتشار: دهمین کنفرانس دانشجویی مهندسی برق ایران

تعداد صفحات: ۶

نویسنده(ها):

Armin Eftekhari – K.N.Toosi University
Arash Ali Amini – University of California Berkeley

چکیده:

we introduce a new method for sparse decomposition. Sparse decomposition aims to find sufficiently sparse solutions of a linear system of equations. As an application of SCA we consider our problem in context of blind source separation. In blind source separation problem, objective is to recover sources from their linear mixtures (observations) where mixing matrix is also unknown. Our main interest is in underdetermined case, where mere knowledge of mixing matrix is not enough for source separation. We will define active subspace (linear subspace spanned by submatrix correspondding to active source components at a given time) and develop an iterative algorithm that detects active subspace and use the solution with minimal 2