PAPR reduction for interleaved OFDMA with low complexity

This paper presents a low complexity peak-to-average power ratio (PAPR) reduction technique in interleaved orthogonal frequency-division multiple access (OFDMA) system. The basic idea is to explore the special structure of interleaved OFDMA so as to reduce the computational complexity for PAPR reduction. Current PAPR reduction techniques can be combined with the proposed structure, and repeated clipping and filtering (RCF) is combined for instance. Simulation results show that compared with traditional technique, the proposed technique can gain the same PAPR reduction but with considerable complexity reduction.