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OFDM is an attractive technique for high data rate and reliable communication over fading channels and high Peak-to-Average Power Ratio (PAPR) is a notable drawback of Orthogonal Frequency-Division Multiplexing (OFDM) systems. The main implementation drawback of this system is the possibility of high Peak to Average Power Ratio (PAPR). The idea in SeLective Mapping (SLM) consists of converting the original data lock into several independent signals, and then transmitting the signal that has the lowest PAPR. The selected signal index, called side information index, must also be transmitted to allow for the recovery of the data block at the receiver side, which leads to a reduction in data rate.
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