| 降低OFDM系统中PAPR的次优化PTS算法 |
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| 引用本文： | 鲁锦锋,文武. 降低OFDM系统中PAPR的次优化PTS算法[J]. 通信技术, 2008, 41(9) |
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| 作者姓名： | 鲁锦锋 文武 |
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| 作者单位： | 重庆邮电大学,通信新技术应用研究所,重庆,400065 |
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| 摘 要： | 正交频分复用(OFDM)系统的主要缺点是峰均功率比(PAPR)增大会严重地降低了发射机中高功率放大器(HPA)的效率.部分传输序列(PTS)算法能有效地降低OFDM信号的PAPR概率,但随着PTS中分割子块的增多也带来了高的计算复杂度.为此,文中提出一种新的PTS算法,该算法比传统的穷尽搜寻法具有更佳的性能.仿真结果表明,文中所提PTS算法在降低PAPR相似的情况下,具有更小的计算复杂度.
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| 关 键 词： | 正交频分复用 峰均功率比 部分传输序列 |
PAPR Reduction of OFDM System by Sub-Optimal PTS Algorithm |
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| LU Jin-feng,WEN Wu. PAPR Reduction of OFDM System by Sub-Optimal PTS Algorithm[J]. Communications Technology, 2008, 41(9) |
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| Authors: | LU Jin-feng WEN Wu |
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| Affiliation: | LU Jin-feng,WEN Wu(Research Institute of Communication New Technical Application,CQUPT,Chongqing 400065,China) |
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| Abstract: | The main flaw of Orthogonal Frequency Division Multiplexing(OFDM) systems is the high peak-to-average power ratio(PAPR),which significantly reduces the efficiency of the transmit high power amplifier(HPA).Partial transmit sequence(PTS) can improve the PAPR probability of the OFDM signal.For PTS,the search complexity increases exponentially with the growth of subblocks.Thus a new algorithm for computing the phase factors is proposed,which can achieve better performance than the exhaustive binary search appro... |
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| Keywords: | OFDM PAPR PTS |
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