What is CLPC (Close-Loop Power Control)?

In the Closed Loop Power Control, feedback is utilized for adjusting the transmit power level. Close-Loop Power Control is utilized to examine the capacity of the UE transmitter to change its output power in accordance with at least one TPC commands received in the downlink. The power control step is the adjustment in the UE transmitter output power in response to a single TPC command shown at the UE.