In view of flaws related to the peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems, a proposal has thus been made of an improved algorithm for joint sub-optimal partial transmission sequence (PTS) and amplitude limiting. By using sub-optimal PTS to reduce the correlation of OFDM signals, a reduction of the peak-to-average power of OFDM signals can be achieved by combining amplitude-limiting processing. The simulation results show that, compared with the traditional PTS algorithm, the complexity of the sub-optimal PTS-Clipping algorithm has been reduced by half to the effect, with PAPR performance reduced by 1 dB as well, indicating that it helps to maximize the advantages of existing algorithms and reduce PAPR, without getting too much calculation and sideband noise involved.