期刊名称：International Journal of Computational Intelligence Techniques
印刷版ISSN：0976-0466
电子版ISSN：0976-0474
出版年度：2012
期号：572
页码：76-78
出版社：Bioinfo Publications
摘要：The 3rd generation standard has adopted orthogonal frequency division multiplexing access (OFDMA) in downlink and single carrier-frequency division multiple access SC-FDMA used for the uplink transmissions, which is used single carrier modulation and frequency domain equalization. In this paper, we proposed a roll-off-factor scheme to reduce the peak-to-average power ratio (PAPR) of SC-FDMA signals. Moreover, the scheme can compress the large amplitude of signal, its maintaining the average constant power of signal. Using the Matlab simulation results show that the proposed roll-off-factor scheme can offer better PAPR reduction by properly choosing the control parameters. The proposed our companding scheme transform the original SCFDMA signals into power distributed function. The companding scheme can reduce the large amplitude signals, and its maintaining constant average power.
