PERFORMANCES COMPARISONS OF PAPR REDUCTION SCHEME FOR FBMC/OQAM AND OFDM SYSTEMS

Abstract

Multi-carrier transmission scheme such as OFDM (Orthogonal Frequency Division Multiplexing) has some disadvantages of large PAPR (Peak-to-Average Power Ratio) compared to a single carrier transmission scheme. Similar to other multicarrier systems like OFDM, a fundamental drawback of FBMC/OQAM(Filter Bank Multicarrier with Offset QAM) systems is the large PAPR of the signal. In this paper, we consider the signal structure of the FBMC/OQAM and verify whether the conventional PAPR reduction scheme for OFDM system is still effective to FBMC/OQAM or not. Theoretical analysis and simulations show that there needs to be some modification of the conventional PAPR reduction in consideration of the overlapping structure of the FBMC/OQAM signal.