A novel block SLM scheme for PAPR reduction of OFDM systems

This paper proposes a novel block selected mapping (SLM) scheme to obtain better PAPR reduction performance with lower computational complexity compared with conventional SLM strategy. The proposed algorithm is capable of partitioning the OFDM symbol sequence into several blocks multiplied by various phase rotation sequences in frequency domain, and further employs appropriate combination of block signals to create more alternative OFDM signal sequences. As a result, with the same phase rotation sequences, our proposed scheme has the potentials to provide better PAPR reduction performance with lower computational complexity. In addition, the PAPR reduction performance could be further enhanced with more partition blocks.