Peak to Average Power Ratio (PAPR) Minimizing Techniques for Helical Interleaved OFDM System

Abstract

Orthogonal frequency-division multiplexing (OFDM) is a multi-carrier, multi rate, multi symbol, frequency division multiplexing transmission system. In which a single high data rate stream is divided in to a number of low data rate streams. High spectral efficiency due to orthogonal subcarriers is the major advantage of this system. The major drawback of this system is high peak-to-average power ratio (PAPR) due to multiplexing of signals. The high PAPR reduces the system performance. This paper presents different PAPR reduction solutions for helical interleaved OFDM system. A current PAPR reduction technique reduces the PAPR to minimum of 12dB. Here we reduced PAPR to minimum of 8dB. The simulation for PAPR reduction has been done in MATLAB.