Peak-to-Average Power Ratio Reduction of OFDM Signals Using PTS Scheme With Low Computational Complexity
Peak-to-Average Power Ratio Reduction of OFDM Signals Using PTS Scheme With Low Computational Complexity
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DOI：
10.1109/tbc.2010.2079691
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发表时间：
2011-03
影响因子：
4.5
通讯作者：
J. Hou;J. Ge;Jing Li
中科院分区：
文献类型：
--
作者：
J. Hou;J. Ge;Jing Li
部分发射序列(PTS)是正交频分复用(Ofdm)系统中降低峰均功率比(PAPR)的最有吸引力的方案之一。然而，传统的PTS方案需要对允许的相位因数的所有组合进行穷举搜索。因此，计算复杂度随子块的数量呈指数增加。利用PTS产生的候选信号之间的相关性，提出了一种新的降低计算复杂度的方案。性能分析表明，该方案在获得与传统PTS方案相同的峰均功率比的同时，显著降低了计算复杂度。
Partial transmit sequences (PTS) is one of the most attractive schemes to reduce the peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. However, the conventional PTS scheme requires an exhaustive searching over all combinations of allowed phase factors. Consequently, the computational complexity increases exponentially with the number of the subblocks. By utilizing the correlation among the candidate signals generated in PTS, a novel scheme is proposed to decrease the computational complexity. The performance analysis shows that the proposed scheme can reduce the computational complexity dramatically while achieving the same PAPR reduction compared to the conventional PTS scheme.