局部搜索PFOP-PTS法抑制OFDM系统PAPR.doc

文档介绍：
局部搜索 PFOP-PTS 法抑制 OFDM 系统
PAPR#
贾莹莹,张帅,杨霖**
5
10
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25
(电子科技大学通信抗干扰重点实验室,成都 611731)
摘要:正交频分复用(OFDM)系统主要缺陷为峰均比(PAPR)高。使用已有的相位因子优选对
部分传输序列(PFOP-PTS)法降低 OFDM 系统的 PAPR,发现相位因子优选对法在迭代末期
具有易陷入局部最优的缺点。为了解决相位因子优选对 PTS 法的缺点,本文提出一种局部
搜索 PTS 法,能够进一步改进相位因子优选对法抑制系统 PAPR 的能力。通过仿真验证使
用局部搜索的 PFOP-PTS 使系统 PAPR 性能优于单纯使用 PFOP-PTS 法 左右。
关键词:正交频分复用;峰均功率比;相位因子优选对;局部搜索;部分传输序列
中图分类号:
Using local search PFOP-PTS to reduce the PAPR of OFDM
system
Jia Yingying, Zhang Shuai, Yang Lin
(National Key Laboratory of Science and Technology munications,University of
Electronic Science and Technology of China, ChengDu 611731)
Abstract: One main drawback of Orthogonal frequency division multiplexed (OFDM) is high
peak-to-average ratio (PAPR). When using the existing method phase factor optimal pairs
combined partial transmit sequences (PFOP-PTS) to reduce the PAPR of the OFDM system , we
find that PFOP-PTS is easy to fall into local optimum in the late iteration . In order to solve the
drawback of the PFOP-PTS, a local search PFOP-PTS method is proposed to further improve the
ability of reducing the PAPR of PFOP- simulation results it is proved that the PAPR using
the local search PFOP-PTS is better than the PAPR using PFOP-PTS alone.
Keywords:
orthogonal frequency division multiplexin(OFDM); peak-to-average power
ratio(PAPR); phase factor optimal pair(