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This paper proposes a new compressive sensing based downlink channel state information (CSI) estimation scheme for FDD massive MIMO systems. The proposed approach, which involves two-stage weighted block ℓ1-minimization, exploits the block sparse nature of the angular domain representation of the MIMO channel matrices, as well as the existence of common scattering paths in the realistic propagation...
This paper proposes a new compressive sensing-based downlink channel state information (CSI) estimation scheme for frequency division duplexing (FDD) massive multiple-input multiple-output (MIMO) systems. The proposed scheme, which involves two-stage weighted block ${\ell _1}$-minimization, exploits the block sparse nature of the angular domain representation of the MIMO channel matrices and the existence...
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