Application and analysis of MIMO systems using Metropolis algorithm

A ray-tracing model was used to investigate the spectral efficiency of multiple input, multiple output (MIMO) antenna array systems in a rectangular space representing a typical short-range indoor environment. Results are presented from simulations in which the positions of the individual array elements were adjusted to improve the system capacity. These adjustments were done iteratively based on the Metropolis algorithm. The relationship between the capacity improvements and factors affecting this was investigated.