Efficient PTS scheme with adaptive selection method for dominant samples in OFDM systems

Abstract

In OFDM systems, high peak-to-average power ratio (PAPR) of OFDM signals is one of the most important problem. As a solution of the PAPR problem in OFDM systems, partial transmit sequence (PTS) scheme is quite a suitable scheme due to its PAPR reduction performance and distortion characteristic. However, high computational complexity is serious problem in the PTS scheme. In this paper, in order to reduce the computational complexity of the previous PTS schemes, efficient PTS scheme is proposed. Although the proposed PTS scheme uses dominant time-domain samples similar to some previous low-complexity PTS schemes, they utilize more efficient selection method for dominant time-domain samples. The proposed PTS scheme lowers the computational complexity compared to the previous PTS schemes while achieving the optimal PAPR reduction performance.