Precoding for joint spectral sidelobes suppression and PAPR reduction in OFDM system

In the scenario of multiple access communication, the spectral sidelobes and peak-to-average power radio (PAPR) problems of orthogonal frequency division multiplexing (OFDM) must not be ignored. This paper proposes a novel precoding scheme that ahead of inverse discrete Fourier transformation (IDFT) is presented to jointly suppress the in-band-out-of-subband (IBOSB) radiation and high PAPR in orthogonal frequency division multiplexing access (OFDMA) systems. Its design is based on generalized eigenvalue problem. Finally, the results of simulations show that joint precoding scheme achieves the markedly performance of spectral sidelobes suppression and PAPR reduction.