An Efficient PAPR Reduction Scheme Based on TKM-TR for OFDM Signals

In this paper, we propose an efficient tone reservation method based on time-domain kernel matrix (TKM- TR) to reduce the peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signals. The proposed method effectively avoids peak regrowth by expanding the scaling vector into a matrix form. Simulation results indicate that the proposed method outperforms the traditional TKM-TR method in terms of convergence speed and computational complexity. In addition, the proposed method can always maintain excellent PAPR reduction performance regardless of the clipping ratio (CR) value, even when the CR is relatively low.