期刊名称：International Journal of Electronics Communication and Computer Engineering
印刷版ISSN：2249-071X
电子版ISSN：2278-4209
出版年度：2012
卷号：3
期号：6
页码：1509-1512
出版社：IJECCE
摘要：Orthogonal Frequency Division Multiplexing (OFDM) is one of promising techniques that has the problem of high Peak-to-Average Power Ratio (PAPR) which limits its applications in communications system. In this paper, we present a new Discrete cosine Transform (DCT) precoded based Recursive Selected Mapping (RSLM) technique for PAPR reduction in OFDM system. The proposed system is based on precoding the constellation symbols with DCT precoder after the multiplication of phase rotation factor and before the Inverse Fast Fourier Transform (IFFT) in RSLM-OFDM Systems. By using this technique, the proposed scheme achieves much better PAPR reduction performance as compared to Recursive SLM technique. The performance of the proposed hybrid technique (DCT-RSLM) is verified through the simulations
关键词：Orthogonal Frequency Division Multiplexing OFDM; Peak-to-Average Power Ratio PAPR; Direct Cosine Transform DCT; Recursive Selected Mapping RSLM
