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In this paper, a new peak-to-average power ratio (PAPR) reduction scheme fororthogonal frequency division multiplexing (OFDM) is proposed based on theselected mapping (SLM) scheme. The proposed SLM scheme generates alternativeOFDM signal sequences by cyclically shifting the connections in each subblockat an intermediate stage of inverse fast Fourier transform (IFFT). Comparedwith the conventional SLM scheme, the proposed SLM scheme achieves similar PAPRreduction performance with much lower computational complexity and no bit errorrate (BER) degradation. The performance of the proposed SLM scheme is verifiedthrough numerical analysis. Also, it is shown that the proposed SLM scheme hasthe lowest computational complexity among the existing low-complexity SLMschemes exploiting the signals at an intermediate stage of IFFT.

A New Low-Complexity Selected Mapping Scheme Using Cyclic Shifted IFFT for PAPR Reduction in OFDM Systems