Papr Reduction In Ofdm Systems Using Selective Mapping And Peak Windowing

Abstract

One of the key enablers of high data rate is Orthogonal Frequency Division Multiplexing (OFDM). One of the major disadvantages of OFDM is high Peak to Average Power Ratio (PAPR). This paper focuses on the Selective Mapping (SLM) Technique which exhibits high PAPR reduction capability without degrading the BER performance of the system. In this paper, we propose a novel weighted normalization-SLM technique for PAPR reduction in OFDM systems. It normalizes the peaks throughout the entire signal period using normalizing weights. It has been shown that the proposed technique outperforms conventional SLM with ease. A comparative analysis of the proposed technique with conventional SLM is also provided.