A ROBUST APPROACH FOR REDUCING PEAK TO AVERAGE POWER RATIO IN OFDM SYSTEM

Rizwan Ahmed Mailk, Ruchi Singla

Abstract: The usage of orthogonal frequency division multiplexing (OFDM) approach arrange for better key for the overhead mentioned problems. OFDM approach issues the information over a huge number of exporters that are spaced separately at exact frequencies. So the advantages of OFDM are great spectral efficiency, toughness of RF interference & minor various path distortions. Generally in OFDM systems there are lot of chances of inter-symbol interferences(ISI), inter carrier interference(ICI) and band limited channel due to multipath fading’s which results in huge path delays and less effective recovery of the signal at the receiver end. These can be due to the PAPR effects which should be minimized. For this reason band limited signal often used pulse shaping technique and equalization. In this paper, pulse shaping of multicarrier signal is proposed by using raised cosine pulse(RC). The result achieved by simulation of OFDM system by the use of pulse shaping indicates that the performance of OFDM is better without using pulse shaping and equalization at the receiving side.

Keywords: OFDM Transmitter & Receiver, Orthogonal, Multi-Path Effect, Digital Audio Broadcasting

DOI: https://doi.org/10.15623/ijret.2016.0511006