An IDFT approach for coprime array direction-of-arrival estimation
In massive multiple-input multiple-output (MIMO) systems, efficiently estimating both the
direction-of-arrival (DOA) and the source power with an increased number of degrees-of-
freedoms (DOFs) is important but challenging. Aiming at this, we introduce the framework of
coprime array signal processing into massive MIMO system and propose an efficient inverse
discrete Fourier transform (IDFT)-based DOA estimation algorithm in this paper. By
implementing IDFT on the second-order virtual array signals characterized by the equivalent …
direction-of-arrival (DOA) and the source power with an increased number of degrees-of-
freedoms (DOFs) is important but challenging. Aiming at this, we introduce the framework of
coprime array signal processing into massive MIMO system and propose an efficient inverse
discrete Fourier transform (IDFT)-based DOA estimation algorithm in this paper. By
implementing IDFT on the second-order virtual array signals characterized by the equivalent …
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