An improved 2D crest factor reduction algorithm for dual-band RF power amplifiers

A two-dimensional peak-to-average power ratio reduction method based on iterative noise filtering for dual-band power amplifiers

“…3.3 PAPR reduction method based on 2-D iterative noise filtering By introducing a difference coefficient, the differential PAPR reduction method prevents excessive peak clipping of small signal points to a certain extent. However, it may lead to improper peak clipping [22]. Moreover, the peak clipping is a nonlinear signal processing, which inevitably brings spectrum expansion.…”

“…The differential 2-D PAPR reduction method [21] improves this situation. However, the introduction of difference coefficient is also prone to cause improper peak clipping [22]. Furthermore, the unequal proportional clipping process is complicated, which is not conducive to hardware implementation.…”