Comparison of Condition Numbers and Ranks of the MIMO Channel at 77 GHz Carrier Frequency

The millimeter wave (mmWave) frequency bands as well the Multiple-Input Multiple-Output (MIMO) technology are gaining significant attraction in the wireless communication system to accommodate the escalating wireless traffic. It is hard to imagine a day without wireless communication in versatile applications that ranges from cellular communication to astronomical explorations. In this paper, the performance of $2\times 2$ and $4\times 4$ MIMO channels at 77 GHz are analyzed for an Urban Micro (UMi) cell scenario in a non-line of sight (NLOS) environment using the NYUSIM simulator. The foliage loss, outdoor to indoor (O2I) penetration loss are considered along with other environmental parameters during the simulation of both co-polarized and cross-polarized MIMO systems. Simulation results including power delay profile (PDP), path loss, condition number, the rank of the channel matrix, and channel capacity are considered to assess the performance of MIMO channels. Moreover, the findings also address the feasibility of spatial multiplexing for the MIMO channels.