MIMO Channel Characterization at MmWave Bands for Typical Indoor Environments

In this paper, multiple-input multiple-output (MIMO) dual polarized channel measurements with 2x2 antenna configurations are carried out in a conference room and an office with 6 GHz bandwidth at 56, 62, and 70 GHz. The channel characteristics, including power delay profile (PDP), power angle profile (PAP), root mean square delay spread (RMS DS), and angular spread (AS) are estimated and analyzed. The impact of polarization on the channel parameters and the frequency dependency of the delay and angular spreads using the 3GPP model are investigated. In addition, based on the ITU model, the predicted RMS DS and AS as a function of the room size are studied.