Measurement Based Capacity of Distributed MIMO Antenna System in Urban Microcellular Environment at 5.25 GHz

In this paper, the results of distributed multiple-input multiple-output antenna system (MIMO DAS) capacity measurements are presented. Until this point, literature about MIMO DAS considers only theoretical channels. The novelty of this paper comes from applying actual measured radio channel to MIMO DAS. In MIMO DAS, the coverage is obtained by using several largely separated MIMO antenna ports (AP) in the area. This way the advantages of shadowing diversity can be exploited and the link performance can be improved as theoretically shown in Ni and Daoben (2004). The measurements for the analysis were conducted in the downtown of Oulu, Finland, by generating a 4times16 MIMO configuration with EB Propsound CStrade as a channel sounding device. The results show that the capacity of MIMO DAS is improved from the conventional system and the diversity aspect in shadowing between the separated APs is large.