Structured Channel Covariance Estimation from Limited Samples in Massive MIMO
Structured Channel Covariance Estimation from Limited Samples in Massive MIMO
Obtaining channel covariance knowledge is of great importance in various Multiple-Input Multiple-Output MIMO communication applications, including channel estimation and user grouping. Considering recently proposed massive MIMO systems, covariance estimation proves to be challenging due to the large number of antennas (M >> 1) employed in the base station. In this …