• Jatinder Singh
• Dr. Charanjit Singh

In communication OFDM is method of encoding digital data on multiple carrier frequencies .OFDM has been developed as a popular scheme for wideband digital communication. It has been adopted for the 4G cellular telecommunications standard like LTE / LTE-A, digital television, DSL internet access and in addition to this it has been adopted by other standards such as WiMAX and many more. OFDM is more resistant to frequency selective fading than single carrier systems and crosstalk between sub bands is eliminated so it does not requires inter carrier bands. Major downside of OFDM system is high PAPR ratio as compared to single carrier system which limits the performance of OFDM systems .PAPR can cause the transmitter’s power amplifier to run within a non-linear operating region. This causes significant signal distortion at the output of the power amplifier. In addition, the high PAPR can cause saturation at the digital-to-analog converter (DAC), leading to saturation of the power amplifier. This paper present study of different PAPR reduction techniques and conclude an overall comparison of different techniques.

Orthogonal frequency division multiplexing(OFDM), Peak to average power ratio (PAPR), SelectiveMapping (SLM), Bit Error Rate (BER), Digital Subscriber Line(DSL), Partial Transmit Sequence (PTS).

"A STUDY OF PAPR REDUCTION TECHNIQUES IN OFDM SYSTEMS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 8, page no.91-97, August-2018, Available :http://www.jetir.org/papers/JETIR1808309.pdf

"A STUDY OF PAPR REDUCTION TECHNIQUES IN OFDM SYSTEMS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 8, page no. pp91-97, August-2018, Available at : http://www.jetir.org/papers/JETIR1808309.pdf