Combined diversity and multiplexing for multiple-input multiple-output system with cochannel interference

A multiple-input multiple-output (MIMO) system that combines diversity and multiplexing is proposed for multi-cellular networks with cochannel interference. In the proposed MIMO system, the data stream is divided into multiple substreams, and each substream is transmitted and received over multiple antenna elements. Because of having both the advantages provided by diversity and multiplexing, the proposed MIMO system can gain larger throughput than the scheme with either diversity or multiplexing solely being employed. We propose an algorithm to find the optimum antenna configuration that maximises the throughput of the proposed MIMO system. We also propose a power control algorithm for the proposed MIMO system such that the interference is decreased and the throughput can be increased. In addition, the time division multiple access scheme and a scheduling algorithm are proposed to mitigate the interference in one time slot so that the throughput of the proposed MIMO system can be further increased.