Simultaneous Reduction of Complexity and PAPR of OFDM Signals using Additive Mapping SLM Scheme
The SeLected Mapping (SLM) scheme is one among the most widely used Peak-to-Average Power Ratio (PAPR) reduction schemes used for the improvement of Orthogonal Frequency Division Multiplexing (OFDM) based systems. Several low-complexity SLM schemes have been proposed but most of them reduce only the PAPR and the computational complexity remains same as in the previous schemes. So, in this paper, an additive mapping SLM scheme is proposed, in which the alternative signal sequences are generated by adding the additive mapping sequences (i.e. multiplying some of the pre-selected OFDM signal sequences with their phases) to an original OFDM signal sequence.