PAPR Reduction as an Enhancement in OFDM

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This paper is engrossed on the critical issue of high PAPR in the most promising high speed communication system using Orthogonal Frequency Division Multiplexing (OFDM). However, OFDM, as an attractive modulation scheme, has shown noteworthy attention across multipath fading channels. It transmits the large amount of data over radio waves but, the summation of data in time domain OFDM signal results in high PAPR which is the major downside of OFDM system. This high PAPR engenders the requirement of PA (Power Amplifier) to be linear in its wide dynamic range and PA's efficiency is a dependent factor of its linear dynamic range which decreases as the range increases.