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A Low Complexity Selected Mapping Scheme by Use of Time Domain Sequence Superposition Technique for PAPR Reduction in OFDM System

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4 Author(s)
Yang, L. ; Nat. Key Lab. of Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu ; Soo, K.K. ; Siu, Y.M. ; Li, S.Q.

By using the time domain sequence superposition (TDSS) technique, in this paper, we propose a low complexity selected mapping (LC-SLM) scheme for the peak-to-average power ratio (PAPR) reduction of the orthogonal frequency division multiplexing (OFDM) system. Unlike the conventional selected mapping (SLM) scheme which needs several inverse fast Fourier transform (IFFT) operations for an OFDM signal, the proposed scheme requires to implement two IFFT operations only. Thus, it can remarkably reduce the computational complexity. Simulation results show that the proposed scheme can achieve similar PAPR performance as the conventional SLM scheme.

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Broadcasting, IEEE Transactions on  (Volume:54 ,  Issue: 4 )