Abstract
In this report, we propose the improvement method of MIMO channel capacity using tunable transmit-array antenna. This method is effective in improving the channel capacity for the situation where keyhole effect exists. The transmit-array is placed at the aperture between two enclosed rooms. The numerical analysis based on the raytracing method showed the 10 % value of the channel capacity can be improved by 10 Bits/s/Hz and this result supports the effectiveness of the proposed method for reducing the dead zone in wireless communication systems.
