FRFT与PTS联合降低OFDM系统峰均功率比的方法

doi:10.3969/j.issn.1000-0801.2011.04.019

Abstract

Abstract:

Concerning that the main drawback of OFDM system is high PAPR，a new scheme of combining FRFT and PTS is proposed.By replacing FFT with FRFT，the OFDM system reduces its PAPR to some extent.In order to reduce the PAPR much more effectively，a union algorithm of FRFT and PTS is given.Meanwhile，the optimal order of the system，which is 0.006，is selected based on the search algorithm simplified according to the unitarity of FRFT.The simulation results show that when CCDF=10^-4，the OFDM system under optimal order can reduce its PAPR by 7 dB，which is 4 dB better than the performance of traditional PTS.

Key words: OFDM, FRFT, PAPR, PTS

Yong Shen,Xinyu Da,Wu Zeng,Tiecheng Xie. A Union Algorithm of FRFT and PTS to Reduce PAPR in OFDM System[J]. Telecommunications Science, 2011, 27(4): 68-72.

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References 11

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A Union Algorithm of FRFT and PTS to Reduce PAPR in OFDM System

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