Partial Transmit Sequence (PTS) is an efficient method for diminishing the high Peak to Average Power Ratio (PAPR) for Orthogonal Frequency Division Multiplexing (OFDM) system. However, finding an optimum phase factor among different combinations of phase factors, rigorous searching is required. It ultimately increases the computational complexity. For practical implementation high computational complexity becomes crucial problem when a huge number of subcarriers are used in PTS based PAPR reduction technique for OFDM system. Hence, to reduce computational load an Advanced Switching Differential Evolution (ASDE) algorithm is incorporated in PTS scheme. In the proposed approach an optimized switching DE algorithm enhances computational efficiency. But, the PAPR reduction performance becomes poorer compared to conventional PTS scheme. To further reduce PAPR, two thresholds based \(\mu \) law companding technique is incorporated along with ASDE PTS for OFDM system. The Matlab simulation revealed that, the proposed scheme performed better PAPR reduction and Bit Error Rate performance with less complexity compared to other relevant techniques.

部分传输序列（PTS）是一种用于减少正交频分复用（OFDM）系统的高峰均功率比（PAPR）的有效方法。但是，要在不同的相位因子组合中找到最佳相位因子，就需要严格的搜索。最终增加了计算复杂度。对于实际实现，当在基于PTS的OFDM系统的PAPR降低技术中使用大量子载波时，高计算复杂度成为关键问题。因此，为了减少计算量，在PTS方案中采用了高级交换差分进化（ASDE）算法。在所提出的方法中，优化的切换DE算法提高了计算效率。但是，与传统的PTS方案相比，PAPR降低性能变得更差。\（\ mu \）律扩展技术与用于OFDM系统的ASDE PTS结合在一起。Matlab仿真表明，与其他相关技术相比，该方案具有更好的PAPR降低和误码率性能，且复杂度更低。