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机译:FDD Massive MIMO Channel Estimation With Arbitrary 2D-Array Geometry
Jiangsu Univ, Dept Elect Engn, Zhenjiang 212013, Peoples R China;
Zhejiang Univ, Coll Informat Sci & Elect Engn, Hangzhou 310027, Zhejiang, Peoples R China;
Hong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Hong Kong, Hong Kong, Peoples R China;
Channel estimation; massive multiple-input multiple-output (MIMO); sparse Bayesian learning (SBL); majorization-minimization (MM); off-grid refinement;