MIMO Channel Prediction using ESPRIT based Techniques

To adapt the transmission schemes in wireless communications, it is useful for the transmitter to have actual knowledge of the channel´s behavior. One way to build such knowledge is to predict the future state of the channel from past measurements. This paper presents two MIMO channel predictors, derived from existing SISO ESPRIT-based techniques. With a sampling rate of 4 samples per wavelength, 17 channel observations are sufficient to produce predictions over a few wavelengths in the case of a 4times4 MIMO system operating in a microcell environment. These predictors are quite simple and have limited computational needs.