SC-FDMA

SC-FDMA（Single-carrier Frequency-Division Multiple Access，单载波频分多址），是LTE的上行链路的主流多址技术^[1]^[2]^[3]。因为SC-FDMA在传统的OFDMA处理过程之前有一个额外的DFT（离散傅立叶变换）处理，SC-FDMA也被叫做线性预编码OFDMA技术。

相比OFDMA，SC-FDMAOFDMA的PAPR（峰值/平均功率比，peak-to-average power ratio）比较低，可以提高移动终端的功率发射效率，延长电池的使用时间，降低终端成本。

^ Hyung G. Myung, Junsung Lim, and David J. Goodman, “Single Carrier FDMA for Uplink Wireless Transmission （页面存档备份，存于互联网档案馆）”, IEEE Vehicular Technology Magazine, vol. 1, no. 3, Sep. 2006, pp. 30–38
^ H. Ekström, A. Furuskär, J. Karlsson, M. Meyer, S. Parkvall, J. Torsner, and M. Wahlqvist, “Technical Solutions for the 3G Long-Term Evolution,” IEEE Commun. Mag., vol. 44, no. 3, March 2006, pp. 38–45
^ 3rd Generation Partnership Project (3GPP); Technical Specification Group Radio Access Network; Physical Layer Aspects for Evolved UTRA, http://www.3gpp.org/ftp/Specs/html-info/25814.htm （页面存档备份，存于互联网档案馆）

[1] Hyung G. Myung, Junsung Lim, and David J. Goodman, “Single Carrier FDMA for Uplink Wireless Transmission （页面存档备份，存于互联网档案馆）”, IEEE Vehicular Technology Magazine, vol. 1, no. 3, Sep. 2006, pp. 30–38

[2] H. Ekström, A. Furuskär, J. Karlsson, M. Meyer, S. Parkvall, J. Torsner, and M. Wahlqvist, “Technical Solutions for the 3G Long-Term Evolution,” IEEE Commun. Mag., vol. 44, no. 3, March 2006, pp. 38–45

[3] 3rd Generation Partnership Project (3GPP); Technical Specification Group Radio Access Network; Physical Layer Aspects for Evolved UTRA, http://www.3gpp.org/ftp/Specs/html-info/25814.htm （页面存档备份，存于互联网档案馆）

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SC-FDMA

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