REDUCTION OF PAPR USING HELICAL INTERLEAVER IN PTS TECHNIQUE FOR SCFDMA SYSTEM

Abstract

OFDM is a high data rate modulation technique used in the downlink of 4G system. Due to the difficulty of PAPR, usage of
OFDM system affects the battery period of mobile terminal. So that new accessing technique called SCFDMA system which is
employed in the uplink system. But still the PAPR problem persists in SCFDMA system which has to be overcome. A statistical
method, Partial Transmit Sequence can be used with SCFDMA to reduce the PAPR even more. In this paper, the PAPR in
SCFDMA system is reduced further by PTS technique using helical interleaver. The proposed system yields 3% reduction in
PAPR compared to conventional method.