Pilot Assignment for Joint Uplink-Downlink Spectral Efficiency Enhancement in Massive MIMO Systems With Spatial Correlation - Nguyen, Tien Hoa; Chien, Trinh Van; Ngo, Hien Quoc; Tran, Xuan Nam; Bjornson, Emil (IEEE transactions on vehicular technology, 2021)
Keywords: Algorithms; Channel estimation; Closed-form expression; Combinatorial optimization; Combinatorial optimization problems; Contamination; Correlated Rayleigh fading channels; Data communication; Data transmission; Downlink; Downlinking; Efficiency; Ergodic spectral efficiencies; Fading channels; Heuristic algorithms; Interference; Massive MIMO; Massive multiple-input- multiple-output system (MIMO); max-min fairness optimization; MIMO systems; Optimization; Optimization problems; pilot assignment; Power control; Rayleigh fading; Sequential algorithm; Signal to noise ratio; Spectral efficiencies; Uplink; max-min fairness optimization; pilot assignment; Channel estimation; Interference; Massive MIMO; Downlink; Data communication; Uplink; Contamination; Signal to noise ratio