A Time Domain SLM for PAPR reduction in SC-FDMA Systems

Single carrier frequency division multiple access (SC-FDMA) has not only utilized the single carrier modulation, frequency-domain equalization, and the most features of OFDMA, but also, it has an outstanding feature. It is the lower PAPR due to its single carrier structure. However, localized frequency division multiple access (LFDMA) still needs more PAPR reduction, since the pulse shaping does not affect much its PAPR performance. In this paper, we propose a scheme that's utilizing the selective mapping technique, which consider a distortionless PAPR reduction scheme in multicarrier systems. Afterwards, we numerically discuss the PAPR characteristics using the complementary cumulative distribution function (CCDF) of PAPR. The results demonstrate that SC-FDMA signals, which use Time Domain-Selective Mapping (TD-SLM), indeed have a significant reduction in PAPR compared to those, which do not use it. For long term, we also prove numerically that the only thing affecting the PAPR performance is the number of phases, whereas, the phases' values themselves do not affect the PAPR performance at all.