Open AccessLow‐complexity selected mapping scheme using cyclic‐shifted inverse fast Fourier transform for peak‐to‐average power ratio reduction in orthogonal frequency division multiplexing systems
Author(s) -
Kim KeeHoon,
Jeon HyunBae,
No JongSeon,
Shin DongJoon
Publication year - 2013
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2012.0761
Subject(s) - orthogonal frequency division multiplexing , fast fourier transform , reduction (mathematics) , algorithm , computational complexity theory , inverse , mathematics , multiplexing , discrete fourier transform (general) , bit error rate , computer science , signal (programming language) , fourier transform , short time fourier transform , telecommunications , statistics , fourier analysis , mathematical analysis , decoding methods , geometry , estimator , programming language
In this study, a new peak‐to‐average power ratio (PAPR) reduction scheme for orthogonal frequency division multiplexing (OFDM) is proposed based on the selected mapping (SLM) scheme. The proposed SLM scheme generates alternative OFDM signal sequences by cyclically shifting the connections in each subblock at an intermediate stage of inverse fast Fourier transform (IFFT). Compared with the conventional SLM scheme, the proposed SLM scheme achieves similar PAPR reduction performance with much lower computational complexity and no bit error rate degradation. The performance of the proposed SLM scheme is analysed mathematically and verified through numerical analysis. Also, it is shown that the proposed SLM scheme has the lowest computational complexity among the existing low‐complexity SLM schemes exploiting the signals at an intermediate stage of IFFT.