Interference suppression in heterogeneous massive MIMO systems with imperfect CSI

Interference management is of paramount importance in heterogeneous massive mimo networks (HetNet). In this paper, an algorithm has been suggested to suppress the interference large-MIMO HetNets with imperfect channel state information(CSI). The proposed technique controls both intra-tier and cross-tier macrocell as well small cells. have minimized under maximum transmission power minimum signal noise ratio (SINR) constraint. estimation error matrix also modeled using joint sparsity property. precoding thus achieved through application semi-definite relaxation block coordinate descent techniques. cells are addressed aid zero forcing scheme. method validated various simulations which confirm superiority over its counterparts.