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In this work, we propose a framework which separates multi-emitter signals arriving to uniform linear antenna receiver system. Proposed model uses a combination of variational mode decomposition (VMD) and space alternating expectation maximization (SAGE) algorithms. Former one separates emitter signals and estimates their frequencies while in the second part channel parameters (relative phases, angle...
A time-frequency signal analysis technique for detection and extraction of signal components is developed. The proposed technique is observed to be successful even under high noise levels, for signals whose components have compact support in the time-frequency plane. It is an iterative algorithm which detects and extracts one component at a time. The robust estimates of instantaneous frequency which...
A novel approach is proposed to provide robust and accurate estimates for linear regression problems when both the measurement vector and the coefficient matrix are structured and subject to errors or uncertainty. A new analytic formulation is developed in terms of the gradient flow of the residual norm to analyze and provide estimates to the regression. The presented analysis enables us to establish...
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