Partial subblock weighting PTS scheme for PAPR reduction of OFDM signals

摘要

As one of the most promising schemes for peak-to-average power ratio (PAPR) of OFDM signals, partial transmit sequence (PTS) shows good PAPR reduction performance. However, large computational complexity is required for obtaining this good PAPR reduction performance in conventional PTS (CPTS). In this paper, a partial subblock weighting PTS (PSW-PTS) for PAPR reduction of OFDM signals is proposed. In the proposed PSW-PTS scheme, all the subblock sequences are divided into two parts: the original part and the weighted part, where only the subblock sequences in the weighted part are weighted by phase weighting factors. Moreover, two different sets of phase weighting factors are adopted to reduce computational complexity further. Simulation results show that compared with CPTS, the proposed PSW-PTS can obtain clear computational complexity reduction with similar PAPR reduction performance.