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Peak‐to‐Average Power Ratio Reduction Using N‐tuple Selective Mapping Method for MC‐CDMA
Authors:Sajjad Ali  Zhe Chen  Fuliang Yin
Abstract:The multi‐carrier transmission signal in Multi‐Carrier Code Division Multiple Access (MC‐CDMA) has a high peak‐to‐average power ratio (PAPR), which results in nonlinear distortion and deteriorative system performance. An n‐tuple selective mapping method is proposed to reduce the PAPR, in this paper. This method generates 2n sequences of an original data sequence by adding n‐tuple of n PAPR control bits to it followed by an interleaver and error‐control code (ECC) to reduce its PAPR. The convolutional, Golay, and Hamming codes are used as ECCs in the proposed scheme. The proposed method uses different numbers of the n PAPR control bits to accomplish a noteworthy PAPR reduction and also avoids the need for a side‐information transmission. The simulation results authenticate the effectiveness of the proposed method.
Keywords:MC‐CDMA  peak‐to‐average power ratio  PAPR  high power amplifier  HPA  selective mapping  SLM
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