Better Performance ACF Operation for PAPR Reduction of OFDM Signal

TL;DR

This paper proposes an improved amplitude clipping and filtering scheme for OFDM signals that significantly reduces PAPR with minimal increase in BER, enhancing transmitter efficiency for wireless communications.

Contribution

The paper introduces a novel ACF method that outperforms existing techniques in PAPR reduction with slight BER increase.

Findings

Significant PAPR reduction achieved

Minimal BER increase observed

Enhanced transmitter efficiency for OFDM systems

Abstract

Orthogonal frequency division multiplexing (OFDM) is a promising modulation radio access scheme for next generation wireless communication systems because of its inherent immunity to multipath interference due to a low symbol rate, the use of a cyclic prefix, and its affinity to different transmission bandwidth arrangements. OFDM has already been adopted as a radio access scheme for several of the latest cellular system specifications such as the long-term evolution (LTE) system in the 3GPP (3rd Generation Partnership Project). Nevertheless, peak-to-average power ratio (PAPR) of OFDM signal is a significant drawback since it restricts the efficiency of the transmitter. A number of promising approaches have been proposed & implemented to reduce PAPR with the expense of increase transmit signal power, bit error rate (BER) & computational complexity and data rate loss, etc. In this paper, a relatively better scheme of amplitude clipping & filtering operation (ACF) is proposed and implemented which shows the significant improvement in case of PAPR reduction while increasing slight BER compare to an present method.