Patent ID: 8649746

Claim:
An apparatus for processing reduced bandwidth Envelope Tracking (ET) and Digital Pre-Distortion (DPD), the apparatus comprising: a Crest Factor Reduction (CFR) unit configured to suppress an increase of a side lobe occurring when a Peak to Average Power Ratio (PAPR) decreases with respect to a signal generated in a baseband according to a standard and passes through a transmit (Tx) filter; a rescaling Digital Pre-Distortion (DPD) unit configured to receive an original envelope and a reduced bandwidth envelope of an In-phase/Quadrature-phase (I/Q) signal output from the CFR unit to perform a pre-distortion process; an envelope converter configured to convert an envelope signal to a reduced bandwidth envelope signal based on the I/Q signal output from the CFR unit; a Supply Modulator (SM) configured to modulate a signal output from the envelope converter to generate power; and a Power Amplifier (PA) configured to amplify an input signal based on a signal output from the resealing DPD unit using power generated by the SM.