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

This letter proposes a new two-dimensional (2-D) PAPR reduction method to improve the peak clipping precision and the error vector magnitude (EVM) performance. On one hand, it conducts joint peak clipping for dual-band signals; on the other hand, it uses iterative noise filtering method to suppress peak regeneration and spectral spread caused by hard clipping. Simulation results show that when the PAPR of OFDM dual-band signal is reduced to 6.8 dB, compared with the traditional 2-D PAPR reduction algorithm, the EVM value of the signal is reduced from 10.3% to 6.9%, which reflects less signal distortion.