  There are many selected mapping (SLM) schemes to reduce the peak-to-average
power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM)
signals. Beginning with the conventional SLM scheme, there have been proposed
many low-complexity SLM schemes including Lim's, Wang's, and Baxely's SLM
schemes typically. In this paper, we propose an adaptive generation (AG) method
of OFDM signals in SLM schemes. By generating the alternative OFDM signals
adaptively, unnecessary computational complexity of SLM schemes can be removed
without any degradation of their PAPR reduction performance. In this paper, we
apply the AG method to various SLM schemes which are the conventional SLM
scheme and its low-complexity versions such as Lim's, Wang's, and Baxely's SLM
schemes. Of course, the AG method can be applied to most of existing SLM
schemes easily. The numerical results show that the AG method can reduce their
computational complexity substantially.
