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Orthogonal Frequency Division Multiplexing (OFDM) is widely employed in Wi-fi, 4G and 5G systems for its spectral efficiency and robustness to multipath fading, but suffers from high Peak-to-Average Power Ratio (PAPR), which degrades power amplifier efficiency and increases error rates. Three methods—Clipping, Selective Mapping (SLM), and Partial Transmit Sequences (PTS)—are used in this study to solve the PAPR problem. These methods’ effectiveness is assessed in terms of computational complexity, Bit Error Rate (BER), and Complementary Cumulative Distribution Function (CCDF) across various subcarrier configurations. Simulation results show that for 256 subcarriers, the proposed PTS scheme achieves a PAPR reduction from 10.97 dB (plain OFDM) to 2.58 dB, while SLM reduces it to 3.60 dB and clipping to 6.10 dB, with negligible BER degradation. This work provides a unified quantitative study on performance and complexity that offers design insights for realistic OFDM communication systems with lower PAPR, this paper examines the trade-offs between distortion, complexity, and reduction efficiency among Clipping, SLM, and PTS.

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Enhanced PAPR Reduction in OFDM Systems using Clipping, Selective Mapping and Partial Transmit Sequences Techniques

  • 会议论文

  • 发表日期：

    2026年

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  • N. M. Jairish,
  • K. Jai Aakaash,
  • Ramesh Ramakrishnan

摘要

Orthogonal Frequency Division Multiplexing (OFDM) is widely employed in Wi-fi, 4G and 5G systems for its spectral efficiency and robustness to multipath fading, but suffers from high Peak-to-Average Power Ratio (PAPR), which degrades power amplifier efficiency and increases error rates. Three methods—Clipping, Selective Mapping (SLM), and Partial Transmit Sequences (PTS)—are used in this study to solve the PAPR problem. These methods’ effectiveness is assessed in terms of computational complexity, Bit Error Rate (BER), and Complementary Cumulative Distribution Function (CCDF) across various subcarrier configurations. Simulation results show that for 256 subcarriers, the proposed PTS scheme achieves a PAPR reduction from 10.97 dB (plain OFDM) to 2.58 dB, while SLM reduces it to 3.60 dB and clipping to 6.10 dB, with negligible BER degradation. This work provides a unified quantitative study on performance and complexity that offers design insights for realistic OFDM communication systems with lower PAPR, this paper examines the trade-offs between distortion, complexity, and reduction efficiency among Clipping, SLM, and PTS.