针对正交频分复用(OFDM)系统中峰均功率比(PAPR)高的问题,提出了一种双层PTS算法来降低PAPR.该算法通过把子载波的数据分成2层,每层都分别使用了次优PTS算法来对该层的PAPR进行优化,从而降低整个OFDM系统的PAPR.仿真结果表明,双层PTS算法大大降低系统的复杂性,同时使PAPR得到了更好地抑制.
For the problem that the peak-to-average-power ratio (PAPR) of the orthogonal freque- ntcy division multiplexing (OFDM) system is high, the dual layered phase sequencing (DLPS) method is made to reduce the PAPR. The method divides the sub-carrier into two layers and each layer uses the suboptimal PTS to reduce the PAPR, so the method reduces the PAPR of the whole OFDM system. The results of the simulation show that the algorithm of dual layered PTS greatly reduced the complexity of the system, while PAPR has been in a situation of better control.
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