New Clipping-and-Filtering Method for Peak-to-Average Power Ratio Reduction in OFDM

In this paper, the authors introduce a new clipping-and-filtering method for peak-to-average power ratio (PAPR) reduction of orthogonal frequency division multiplexing (OFDM) signals. The proposed algorithm aims to achieve four primary purposes. First, it eliminates the out-of-band frequency components of the clipping noise to avoid the adjacent channel leakage. Second, it constrains constellation distortion in a square-shaped region while maintaining certain distances among constellation points in the signal space. Third, it increases PAPR reduction performance. Fourth, it has low computational complexity. The experimental results on Matlab in DVB-T2 context for 16-QAM symbols are presented. Finally, a comparison of the PAPR reduction effectiveness of the proposed method with the constrained clipping method is given.