نتایج جستجو برای: subspace hypercyclicity

تعداد نتایج: 17851  

Journal: :Integral Equations and Operator Theory 2014

In this paper, a new method is proposed for DOA estimation of correlated acoustic signals, in the presence of unknown spatial correlation noise. By generating a matrix from the signal subspace with the Hankel-SVD method, the correlated resource information is extracted from each eigen-vector. Then a joint-diagonalization  structure is constructed of the signal subspace and basis it, independent...

Journal: :journal of electrical and computer engineering innovations 0
somaye jalaei digital communications signal processing (dcsp) research lab., faculty of electrical engineering, shahid rajaee teacher training university (srttu), lavizan, 16788-15811, tehran, iran shahriar shirvani moghaddam digital communications signal processing (dcsp) research lab., faculty of electrical engineering, shahid rajaee teacher training university (srttu), lavizan, 16788-15811, tehran, iran

in this paper, a new approach for estimating the number of wideband sources is proposed which is based on rss or ism algorithms. numerical results show that the mdl-based and eit-based proposed algorithm havea much better detection performance than that in egm and aic cases for small differences between the incident angles of sources. in addition, for similar conditions, rss algorithm offers hi...

Journal: :Journal of Mathematical Analysis and Applications 2016

Journal: :International Journal of Pure and Apllied Mathematics 2015

Journal: :Advances in Mathematics 2021

The question of whether a hypercyclic operator T acting on Fréchet algebra X admits or not an vectors (but 0) has been addressed in the recent literature. In this paper we give new criteria and characterisations context convolution operators H(C) backward shifts general sequence algebra. Analogous questions arise for stronger properties like frequent hypercyclicity. trend sufficient condition w...

Journal: :bulletin of the iranian mathematical society 2014
amer kaabi

‎the global fom and gmres algorithms are among the effective‎ ‎methods to solve sylvester matrix equations‎. ‎in this paper‎, ‎we‎ ‎study these algorithms in the case that the coefficient matrices‎ ‎are real symmetric (real symmetric positive definite) and extract‎ ‎two cg-type algorithms for solving generalized sylvester matrix‎ ‎equations‎. ‎the proposed methods are iterative projection metho...

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