Characterisation of MIMO propagation channels using directional antenna arrays

In this paper we investigate the effects of directional antenna arrays on the performance of indoor and outdoor MIMO (multiple-input multiple-output) links. Measurements are presented for 2 /spl times/ 8 and 4 /spl times/ 8 MIMO channels in the 2 GHz band. The results include delay/Doppler characteristics, and channel transfer functions, as well as link capacity.