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Reconfigurable Intelligent Surface-Enabled Gridless DoA Estimation System for NLoS Scenarios
The conventional direction-of-arrival (DoA) estimation approaches only be effective when the line-of-sight (LoS) link exists, while in the case of the non-line-of-sight (NLoS) situation, the spatial angle can not be captured and thus the DoA estimation performance would be significantly degraded.
A Gridless Fourth-order Cumulant-Based DOA Estimation Method under Unknown Colored Noise
To reduce the adverse impacts of the unknown colored noise on the performance degradation of the direction-of-arrival (DOA) estimation, we propose a new gridless DOA estimation method based on fourth-order cumulant (FOC)in this letter.
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