Performance enhancement of OFDM signals using PAPR reduction Techniques and the Comparison of their Performance

Abstract

Orthogonal frequency division multiplexing(OFDM) is a prominent technique for providing high Quality of service(QOS) to the users by mitigating the fading of signals and also for providing high data rates in multimedia services. But Peak to Average power ratio(PAPR) is a major technical challenge in OFDM which reduces the efficiency of RF Power amplifiers. In this paper, we describe the PAPR reduction techniques in OFDM signals and compare their performance.

Blind Algorithm Development for Peak to Average Power Ratio Reduction in OFDM Systems under Frequency Selective Channels

“…In literature, researches have presented a lot of signal processing techniques. These includes, clipping (Mounir et al, 2017;Ibwe, 2019), peak windowing, non-linear companding technique (NTC), partial transmit sequence (PTS), selected mapping (SLM), selective mapping, tone reservation (TR), tone injection (TI), clipping and filtering (CF), discrete fourier transform spreading, discrete cosine transform, peak windowing (Cha et al, 2008;van Welden and Steendam, 2008;Chen et al, 2009;Sharma and Verma, 2011;Vittal, 2012;Chakrapani and Palanisamy, 2012;Wang et al, 2016). But still, a 0 dB PAPR system is far within reach.…”

Examine the impact of Modulation Order and Sub-bands on PAPR Reduction Techniques using Various Modulator in 802. 11a/b/g

“…These schemes can be further classified into two prominent types which are signal distortion and signal scrambling techniques. One of the common schemes include in Signal scrambling techniques are Selected mapping (SLM) scheme" [5], [6], [8]" and Partial transmit sequence (PTS) schemes" [3], [4], [7], [10,[12]". Among all these schemes, the SLM and PTS schemes have been considered the most efficiently schemes due to its high PAPR reduction performance without incurring additional signal distortion.…”