Abstract: An efficient precoding technology was proposed for multicell multipleinput multipleoutput (MIMO) system consisting of several clusters. According to the variation of channel state information (CSI) in two contiguous slots, the central processor determines users’ precoding codeword between two precoding schemes and uses extra 1 bit overhead to indicate the selection scheme. The simulation results show that the proposed scheme can achieve better throughput performance and cut down the sum backhaul overhead than the traditional schemes.
 

Key words: multi-cell, intra-cluster interference, adaptive precoding, signal-to-noise ratio