FDD Massive MIMO Channel Estimation With Arbitrary 2D-Array Geometry - Dai, Jisheng; Liu, An; Lau, Vincent K. N. (IEEE transactions on signal processing, 2018)
Keywords: Channel estimation; Discrete Fourier transforms; Downlink; Geometry; majorization-minimization (MM); massive multiple-input multiple-output (MIMO); MIMO communication; off-grid refinement; Scattering; sparse Bayesian learning (SBL); Training