Distributed precoding for multicell MIMO networks

Distributed precoder for multicell multi-input multi-output (MIMO) networks is designed in this paper, which is implemented in a distributed manner instead of the central manner. Considering the interference can be transformed into the useful contribution, the criterion of maximizing the signal to leakage plus noise ratio (SLNR) is first introduced for the distributed precoder design. Moreover, in order to further reduce the channel state information feedback overhead, another precoder in terms of matching filter (MF) is then proposed for the distributed precoder design in multicell MIMO systems. Computer simulations have shown that the proposed precoding schemes outperform the existing method in terms of the achievable rate and the cumulative distribution function of the whole multicell MIMO system.