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On the Near Optimal PRT Set of TR Scheme for PAPR Reduction in OFDM System  

Lim, Dae-Woon (동국대학교 정보통신공학과)
Noh, Hyung-Suk (서울대학교 전기.컴퓨터공학부 및 뉴미디어통신 연구소)
No, Jong-Seon (서울대학교 전기.컴퓨터공학부 및 뉴미디어통신 연구소)
Shin, Dong-Joon (한양대학교 전자통신컴퓨터공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.2C, 2007 , pp. 174-180 More about this Journal
Abstract
In the tone reservation (TR) scheme, it is known that the set of randomly selected peak reduction tones (PRT's) performs better than the contiguous PRT set and the interleaved PRT set in the PAPR reduction of orthogonal frequency division multiplexing (OFDM). It is also known that finding the optimal PRT set corresponds to the secondary peak minimization problem in the TR scheme. However, the problem cannot be solved for the practical number of tones since it is NP-hard. In this paper, a new search algorithm for the near optimal PRT set is proposed based on the fact that the secondary peak value of the PRT set statistically tends to decrease asthe variance of the PRT set decreases.
Keywords
Peak to Average Power Ratio(PAPR); Orthogonal Frequency Division Multiplexing(OFDM); Tone Reservation(TR);
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