Research on low complexity algorithm of optimum PTS technique
基于最优PTS技术的低复杂度算法研究

In order to reduce the peak-to-average power ratio(PAPR) in orthogonal frequency division multiplexing (OFDM) systems,this paper proposed a low complexity algorithm of exhaustive search in the case of four elements in the phase set based on the research of partial transmit sequence (PTS) technique. In this method, using of the relationship between candidate phase rotation sequences taking on values from the phase set whose elements were uniformly distribution,removed unnecessary redundancy calculation and found the optimal phase rotation sequence in the case of no reducing the number of the candidate phase rotation sequences. Compared with the conventional exhaustive search method, the analysis of computational complexity and simulation results show that the method can reduce the computational complexity significantly and not affect the performance of PAPR reduction.