Abstract

High peak-to-average power ratio (PAPR) is one of the major drawbacks of orthogonal frequency division multiplexing (OFDM) systems. Selected mapping (SLM) scheme is an attractive one among various PAPR reduction solutions, because this scheme does not cause any signal distortion and is easy to realize. However, an exhaustive search is needed to find the optimal phase rotation sequence in conventional SLM scheme, which will cause unbearable complexity of transmitter. In this paper, we propose a discrete artificial bee colony algorithm based SLM (DisABC-SLM) scheme. Simulation results show that the DisABC-SLM scheme can get lower PAPR than the existing SLM schemes and has a low computational complexity.

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