Single-carrier FDMA

Single-carrier FDMA (SC-FDMA) is frequency-division multiple access scheme. It can be viewed as a linearly precoded OFDMA scheme, henceforth LP-OFDMA. Or, it can be viewed as a single carrier multiple access scheme. One prominent advantage over conventional OFDMA is that the LP-OFDMA/SC-FDMA signal has lower peak-to-average power ratio (PAPR) because of its inherent single carrier structure. It has been provenFact|date=August 2008 that perfect constant modulus transmission is achievable.

LP-OFDMA/SC-FDMA has drawn great attention as an attractive alternative to OFDMA, especially in the uplink communications where lower PAPR greatly benefits the mobile terminal in terms of transmit power efficiency. It is currently a working assumption for uplink multiple access scheme in 3GPP Long Term Evolution (LTE), or Evolved UTRA.

Transmitter and Receiver Structure of LP-OFDMA/SC-FDMA

* DFT: Discrete Fourier Transform
* IDFT: Inverse Discrete Fourier Transform
* CP: Cyclic Prefix
* PS: Pulse Shaping
* DAC: Digital-to-Analog Conversion
* RF: Radio Frequency
* ADC: Analog-to-Digital Conversion

Useful properties

# Low PAPR
# Low sensitivity to carrier frequency offset

References

Hyung G. Myung, Junsung Lim, and David J. Goodman, “ [http://hgmyung.googlepages.com/SingleCarrierFDMA_VTmagSep06.pdf Single Carrier FDMA for Uplink Wireless Transmission] ”, IEEE Vehicular Technology Magazine, vol. 1, no. 3, Sep. 2006, pp. 30-38

M. Danish Nisar, Hans Nottensteiner, and Thomas Hindelang, “On Performance Limits of DFT-Spread OFDM Systems”, in Sixteenth IST Mobile Summit, July 2007 in Budapest, Hungary.

B.E. Priyanto, H. Codina, S. Rene, T.B. Sorensen, P. Mogensen, “Initial Performance Evaluation of DFT-Spread OFDM Based SC-FDMA for UTRA LTE Uplink”, IEEE Vehicular Technology Conference (VTC) 2007 Spring, Dublin, Ireland, Apr. 2007

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); Requirements for Evolved UTRA (E-UTRA) and Evolved UTRAN (E-UTRAN), http://www.3gpp.org/ftp/Specs/html-info/25913.htm

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

D. Falconer, S. L. Ariyavisitakul, A. Benyamin-Seeyar, and B. Eidson, “Frequency Domain Equalization for Single-Carrier Broadband Wireless Systems,” IEEE Commun. Mag., vol. 40, no. 4, April 2002, pp. 58–66

N. Benvenuto and S. Tomasin, “On the comparison between OFDM and single carrier modulation with a DFE using a frequency domain feedforward filter,” IEEE Trans. on Commun., vol. 50, no. 6, June 2002 pp. 947-955

H. Sari, G. Karam, and I. Jeanclaude, “Transmission Techniques for Digital Terrestrial TV Broadcasting,” IEEE Commun. Mag., vol. 33, no. 2, Feb. 1995, pp. 100–109

U. Sorger, I. De Broeck, and M. Schnell, “Interleaved FDMA - A New Spread-Spectrum Multiple-Access Scheme,” Proc. IEEE ICC ’98, Atlanta, GA, June 1998, pp. 1013–1017

H. G. Myung, J. Lim, and D. J. Goodman, "Peak-to-Average Power Ratio of Single Carrier FDMA Signals with Pulse Shaping", The 17th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC ’06), Helsinki, Finland, Sep. 2006

J. Lim, H. G. Myung, K. Oh, and D. J. Goodman, “Channel-Dependent Scheduling of Uplink Single Carrier FDMA Systems”, IEEE Vehicular Technology Conference (VTC) 2006 Fall, Montreal, Canada, Sep. 2006

See also

* 3GPP Long Term Evolution
* OFDMA

External links

* [http://hgmyung.googlepages.com/scfdma Single Carrier FDMA (SC-FDMA) by Hyung G. Myung]
* [http://hgmyung.googlepages.com/SCFDMA.pdf A tutorial on SC-FDMA]
* [http://www.ece.umn.edu/users/pfxia/files/01245993.pdf Reference [1]