Optimal pilot design with CSI feedback in massive MIMO systems
作者： Dan Li , Yuan Zhou , Ang Yang , Shaozhen Guo
DOI: 10.1109/CHINACOM.2014.7054336
关键词: Beamforming 、 Computer science 、 Antenna (radio) 、 Control theory 、 Communication channel 、 Mean squared error 、 MIMO 、 Transmission (telecommunications) 、 3G MIMO
摘要: In this paper, we study the optimal pilot design problem and CSI feedback method in a massive MIMO system. We get asymptotically solution for based on minimizing Mean Square Error (MSE) of channel estimation with both Sum Power Constraint (SPC) Per Antenna constraint (PAPC) utilizing t-norm approximation method. To further improve transmission efficiency reduce computation load, propose weight to gradually discover CSI. The fed back BS is collected beamforming matric different users aiming at improving users' achievable rate. Simulation results validate that can provide an acceptable rate consuming much less resources.
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