A MIMO Channel Measurement Method Based on Optimum m-Sequence Pairs

In recent years, a lot of interest has been drawn to the so-called multiple input multiple output (MIMO) systems in their potential to achieve enormous capacity gains. This increase in capacity is dependent upon the propagation environment exhibiting sufficient scattering. The characterization of MIMO channels is therefore required in order to analyze the performance of such systems in real environments. This paper describes the realization of a measurement method adopts optimum m-sequence pairs for this application, capable of completing parallel measurements within the coherence time of the channel. Results based on measurements in LOS and NLOS locations are referenced and show the effectiveness of the proposed method. A further objective of these experiments is to get insight into the channel estimation.