Communication device and method for operating same

A communication device comprising:

• a transmitter configured to, in a first operation, distort an input signal through a digital predistortion (DPD) circuit, convert the distorted input signal into an analog signal, perform frequency up-conversion on the converted analog signal to generate a first signal, amplify the generated first signal through a power amplifier (PA), and couple the amplified first signal;
• a receiver configured to, in the first operation, receive the coupled first signal from the transmitter, perform frequency down-conversion on the coupled first signal to generate a second signal, and convert the generated second signal into a digital signal through one or more analog-to-digital converters (ADCs) that are turned on among a plurality of ADCs;
• and
• a processor configured to, in the first operation, cause one or more of the plurality of ADCs in the receiver to be turned on and a remainder of the plurality of ADCs to be turned off,
• wherein a number of ADCs to be turned on in the first operation is based on a memory order of a model that models a nonlinear characteristic of the PA.