Exponential spatial correlation with large‐scale fading variations in massive MIMO channel estimation
Exponential spatial correlation with large‐scale fading variations in massive MIMO channel estimation
Abstract To provide the vast exploitation of the large number of antennas on massive multiple‐input–multiple‐output (M‐MIMO), it is crucial to know as accurately as possible the channel state information in the base station. This knowledge is canonically acquired through channel estimation procedures conducted after a pilot signaling phase, which adopts …