Crest Factor Reduction (CFR) is a technique for lowering a waveform’s power ratio from higher to average. It is used in wireless communications and other applications to restrict the dynamic range of signals being sent. The peak to average Rate of multi-user and multi-carrier signals is frequently high. CFR is frequently connected with Digital Pre-Distortion (DPD) in modern transmit chains, which functions as Linearized Power Amplifiers, allowing for optimal efficiency.