Abstract

Orthogonal Frequency Division Multiplexing (OFDM) is a widely accepted multi-carrier transmission scheme which is used for high data rate applications like Long-Term Evolution (LTE). It offers higher data transmission rate by efficient bandwidth usage. OFDM offers greater resistance and immunity towards inter-symbol interference (ISI) and Inter-Carrier Interference (ICI). However the major drawback associated with OFDM is high Peak to Average Power Ratio (PAPR) which forces high power amplifier (HPA) to work in the non-linear region resulting in harmonic distortions in the output. Partial transmit sequence (PTS) is a widely employed and tested method for PAPR reduction in 4G systems. In this paper we have proposed a novel scheme which uses a combination of PTS and Reduced Complexity Maximum Norm (RCMN) method to improve PAPR reduction performance of PTS system. This scheme has effectively reduced PAPR as compared to conventional PTS technique with insignificant increase in computational complexity.

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