%0 Journal Article
%A CAO Jie
%A LAN Xian-gui
%A LIAO Yong
%T Robust Double-Layer Precoding Algorithm for Multi-Cell Downlink MIMO Based on Partial Collaboration
%D 2018
%R 10.13190/j.jbupt.2017-044
%J Journal of Beijing University of Posts and Telecommunications
%P 92-96
%V 41
%N 2
%X In order to reduce the feedback bits of channel state information (CSI) in multi-cell cooperative multiple input multiple output (MIMO) system, a multi-cell partial cooperative MIMO precoding algorithm is proposed. Firstly, a joint channel error model including channel estimation error, quantization error and delay error, is established. Then, by using zero forcing and signal to leakage and interference ratio, a double-layer MIMO robust precoding algorithm is proposed. Numerical analysis and simulation results show that, compared with the traditional multi-cell MIMO system precoding algorithms, the bit error rate and the sum rate capacity are slightly worse, but the proposed algorithm has great advantage in CSI feedback bits.
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2017-044