Massive Connectivity With Massive MIMO—Part I: Device Activity Detection and Channel Estimation
Massive Connectivity With Massive MIMO—Part I: Device Activity Detection and Channel Estimation
This two-part paper considers an uplink massive device communication scenario in which a large number of devices are connected to a base station (BS), but user traffic is sporadic so that in any given coherence interval, only a subset of users is active. The objective is to quantify the cost …