Experimental Study on MIMO Performance of Modulated Scattering Array Antenna in Indoor Environment

摘要

The modulated scattering array antenna (MSAA) is composed of one normal antenna element and several modulated scattering elements (MSE). In this report, a 2-element MSAA is used as the receiving antenna in a 2 by 2 multiple input multiple output (MIMO) system. The MIMO performance of the MSAA with various array spacing is measured to investigate experimentally the relation between the array spacing and the MIMO performance of the MSAA in the Line-of-Sight (LOS) and Non-Line-of-Sight (NLOS) indoor environment. It is found that the Error Vector Magnitude (EVM) and the Channel Capacity which reflect the MIMO performance can be affected by the array spacing. Furthermore, the EVM is complementary with the channel capacity.