Improved particle swarm optimization - based antenna selection scheme for correlated MIMO channels

To reduce the severe performance degradation of the traditional antenna selection schemes in correlated Multiple-Input Multiple-Output (MIMO) channels, this paper proposes a new antenna selection scheme via an improved particle swarm optimization (IMPSO) algorithm. IMPSO algorithm increases the rank of the correlated fading channel matrix. These increments, directly, contribute to the Effective Degree Of Freedom (EDOF) of the channel and hence the performance. Through simulations, it was demonstrated that the proposed scheme provides excellent performance in correlated MIMO channels.