Massive MIMO Channel Models: A Survey

Table 2

Channel measurement.

Scenario	Antenna configuration	Antenna space	Bandwidth/carrier	Measured metric
Outdoor [17]	128-antenna linear array	Half wavelength	50 MHz/2.6 GHz	Channel gain, 𝐾-factor, APS, and eigenvalue distribution correlation of antennas and users
Indoor-to-outdoor [18]	32-antenna rectangular to 128-antenna cylindrical array	Half wavelength	50 MHz/2.6 GHz	Correlation
Outdoor [19]	Cylindrical and linear array with 128-antenna	Half wavelength	50 MHz/2.6 GHz	Large-scale fading and angular resolution
Outdoor [20]	112-antenna virtual array	—	20 MHz/2.6 GHz	Correlation, inverse condition number