Performance of Frequency Domain DFE Using Subcarrier Allocation

Full Text (PDF, 221KB), PP.19-24

Views: 0 Downloads: 0



1. ANNA University Chennai INDIA

2. ECE SKP Engineering College Tiruvannamalai, INDIA

3. Vice Chancellor ANNA University of Technology Tirunelveli, INDIA

* Corresponding author.


Received: 10 Feb. 2011 / Revised: 19 Jun. 2011 / Accepted: 21 Sep. 2011 / Published: 8 Feb. 2012

Index Terms

Decision feedback equalizer (DFE), frequency domain, SC-FDMA, uplink


Due to the usage of single carrier, the performance of SC-FDMA systems degrades in deep frequency selective fading channels. In this paper, we propose a structure of equalizer based on frequency domain decision feedback which could be used for multi-user SC-FDMA systems. This algorithm is applicable to various carrier allocations in multi-user systems such as localized allocation, distributed allocation, and frequency-hopping (FH) allocation. To reduce the complexity, it is not necessary to derive the inversion of matrix, which is required in the traditional decision feedback equalizer for single carrier frequency domain equalization (SC-FDE-DFE). Simulation results show that equalization has been achieved for FD-LE and FD-DFE with distribution mapping. This structure can be used in the broadcasting uplink channels with SC-FDMA scheme.

Cite This Paper

P.SIVAKUMAR, M.RAJARAM, "Performance of Frequency Domain DFE Using Subcarrier Allocation", International Journal of Information Technology and Computer Science(IJITCS), vol.4, no.1, pp.19-24, 2012. DOI:10.5815/ijitcs.2012.01.03


[1]Framing Structure, Channel Coding and Modulation for Digital Television Terrestrial Broadcasting System, P.R. China Standard GB20600-2006, Aug. 18, 2006.

[2]J. Song, Z. X. Yang, L. Yang, K. Gong, C. Y. Pan, J. Wang, and Y. S.Wu, “Technical review on Chinese digital terrestrial television broadcasting standard and measurements on some working modes,” IEEE Trans. Broadcasting, vol. 53, no. 1, pp. 1–7, Mar. 2007.

[3]W. J. Zhang, Y. F. Guan, W. Q. Liang, D. Z. He, F. Ju, and J. Sun, “An introduction of the Chinese DTTB standard and analysis of the PN595working modes,” IEEE Trans. Broadcasting, vol. 53, no. 1, pp. 8–13,Mar. 2007.

[4]J. Fu, C. Y. Pan, Z. X. Yang, and L. Yang, “Low-complexity equalization for TDS-OFDM systems over doubly selective channels,” IEEETrans. Broadcasting, vol. 51, no. 3, pp. 401–407, Sep. 2005.

[5]Z. X. Yang, J. Wang, C. Y. Pan, L. Yang, and Z. Han, “Channel estimation of DMB-T,” in 2002 IEEE Int. Conf. Communications, Circuits and Systems and West Sino Expositions, 2002, vol. 2, pp. 1069–1072.

[6]European Telecommunications Standards Institute (ETSI), “Digital video broadcasting (DVB); Interaction channel for Digital Terrestrial Television (RCT) Incorporating Multiple Access OFDM”, EN 301958, v1.1.1, ETSI, Mar. 2002.

[7]D. Prendergast, B. Caron, and Y.Wu, “The implementation of a return channel for ATSC-DTV,” IEEE Trans. Broadcasting, vol. 53, no. 2, pp.521–529, Jun. 2007.

[8]3GPP, “Physical Channels and Modulation,” TS 36.211 v8.5.0, 2008.

[9]D. Falconer, S. L. Ariyavisitakul, A. Benyamin-Seeyar, and B. Eidson,“Frequency domain equalization for single carrier broadband wireless systems,” IEEE Commun. Mag., no. 4, pp. 58–66, Apr. 2002.

[10]H. Witschnig, M. Kemptner, R. Weigel, and A. Springer, “Decision feedback equalization for single carrier system with frequency domain equalization—An overall system approach,” in 2004 1st International Symposium on Wireless Communication Systems, Sep. 2004, pp.26–30.

[11]Y. Zhu and K. B. Letaief, “Single carrier frequency domain equalization with noise prediction for broadband wireless systems,” in GLOBECOM’ 04, IEEE, Nov. 2004, vol. 5, pp. 3098–3102.

[12]N. Benvenuto and S. Tomasin, “Iterative design and detection of a DFE in frequency domain,” IEEE Trans. Commun., vol. 53, no. 11, pp.1867–1875, Nov. 2005.

[13]G. Huang, A. Nix, and S. Armour, “Decision feedback equalization in SC-FDMA,” in 2008 19th International Symposium on Personal, Indoor and Mobile Radio Communications, Sep. 2008, pp. 1–5.