For original partial transmit sequence (O-PTS), the conjugate operations can be applied to achieve the purpose of ameliorating the peak-to-average power ratio (PAPR) performance. But in this way, an observation has been found that some of these candidate signals has the same PAPR value that brings about great redundant computations. Based on this, a low-complexity PTS is put forward to abate the PAPR of orthogonal frequency division multiplexing (OFDM) systems, thereby avoiding redundant candidate signals. In proposed scheme, a novel scheme employing conjugate operations for generating candidate signals with different PAPR values is given, which avoids the generation of candidate signals with the same PAPR value and saves the needless computations. Meanwhile, the grouping is involved for further reduction in computational complexity. Simulation results illustrate that our scheme has the similar or superior PAPR performance with the remarkable reduction in computational complexity by comparison with O-PTS.

中文翻译：

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用于降低OFDM系统中PAPR的低复杂性PTS方案

对于原始的部分发射序列（O-PTS），可以应用共轭运算来达到改善峰均功率比（PAPR）性能的目的。但是以这种方式，已经发现观察到这些候选信号中的一些具有相同的PAPR值，这带来了很大的冗余计算。基于此，提出了一种低复杂度的PTS来减轻正交频分复用（OFDM）系统的PAPR，从而避免冗余的候选信号。在提出的方案中，给出了一种采用共轭运算生成具有不同PAPR值的候选信号的新颖方案，该方案避免了生成具有相同PAPR值的候选信号，并节省了不必要的计算。同时，涉及分组以进一步降低计算复杂度。