Low-complexity selected mapping scheme using cyclic-shifted inverse fast fourier transform for peak-to-average power ratio reduction in orthogonal frequency division multiplexing systems

Kee Hoon Kim, Hyun Bae Jeon, Jong Seon No, Dong Joon Shin

Research output: Contribution to journalArticle

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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.

Original languageEnglish
Pages (from-to)774-782
Number of pages9
JournalIET Communications
Issue number8
Publication statusPublished - 2013 Jul 31


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