Peak-to-average power reduction for OFDM by repeated clipping and frequency domain filtering

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Constant Envelope OFDM (2008, methodology): “Many techniques have been developed to address the PAPR problem: distortionless PAPR reduction schemes such as coding and tone reservation [24]–[26]; non-distortionless PAPR reduction schemes such as clipping/filtering and peak windowing [27], [28]; predistortion schemes [29]; and receiver correctio”
Transmission Analysis of OFDM-Based Wireless Services Over Turbulent Radio-on-FSO Links Modeled by Gamma–Gamma Distribution (2010, background): “This is particularly crucial for IM/DD DC-OFDM, where large number of subcarriers creates unfavorable high peak-to-average power ratios (PAPR) [9], [16], [17].”
OFDM and Its Wireless Applications: A Survey (2009, background): “Therefore, if clipping and filtering are repeated several times, then both the PAPR and out-of-band radiation will be reduced, as proposed in [120].”
Approaching the Non-Linear Shannon Limit (2010, background): “Wireless systems, particularly those employing OFDM, experience non-linearity due to the saturation characteristics of power amplifiers [ 40 ].”
Optimized Iterative Clipping and Filtering for PAPR Reduction of OFDM Signals (2011, methodology): “Figure 2 plots the CCDFs of the PAPR for original symbols, modified symbols using Armstrong’s method (for 1, 8, and 16 iterations) [3], and modified symbols using our proposed method (for 1 and 2 iterations) involving filter optimization.”