Journal of Communications and Networks

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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A Frequency Domain Equalization Algorithm for Fast Time-Varying Fading Channels

  • Tran, Le-Nam (School of Electronics and Information, Kyung Hee University) ;
  • Hong, Een-Kee (School of Electronics and Information, Kyung Hee University) ;
  • Liu, Huaping (School of Electronic Engineering and Computer Science, Oregon State University)
  • Published : 2009.10.31
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Abstract

Conventional frequency domain equalization (FDE) schemes were originally devised for quasi-static channels. Thus, such equalization schemes could suffer from significant performance degradation in fast-fading channels. This paper proposes a frequency domain equalization algorithm to mitigate the effect of fast time-varying fading. First, a mathematical expression is derived to quantify the total interference resulting from the time variation of the channel. Then, the proposed approach attempts to eliminate the effect of time-variations of the channel. This cancellation allows efficient use of the classical FDE structures in fast time-varying fading environments, although they are built upon the quasi-static channel model. Simulation results of bit-error-rate performance are provided to demonstrate the effectiveness of the proposed algorithm.

Keywords

References

  1. J. G. Proakis, Digital Communications, 4th ed. McGraw Hill, 2001
  2. J. A. C. Bingham, "Multicarrier modulation for data transmission: An ideawhose time has come," IEEE Commun. Mag. , vol. 28, pp. 5-14, May 1990 https://doi.org/10.1109/35.54342
  3. T. Walzman and M. Schwartz, 'Automatic equalization using the discretefrequency domain,' IEEE Trans. lnf Theory, vol. 19, no. 1, pp. 59-68, Jan. 1973 https://doi.org/10.1109/TIT.1973.1054952
  4. Air lnteiface for Fixed Broadband Wireless Access Systems Part A: Systems between 2 and 11 GHz, IEEE Std. 802. 16ab-01l01, 2001
  5. N. Benvenuto and S. Tomasin, "On the comparison between OFDM andsingle carrier modulation with a dfe using a frequency domain feedforwardfilter," IEEE Trans. Commun. , vol. 50, no. 6, pp. 947-955, June 2002 https://doi.org/10.1109/TCOMM.2002.1010614
  6. B. K. Ng and D. Falconer, 'A novel frequency domain equalization method for single-carrier wireless transmissions over doubly-selective fading channels," in Proc. IEEE GLOBECOM, vol. 1, Nov'2004, pp. 237-241 https://doi.org/10.1109/GLOCOM.2004.1377946
  7. P. Schniter and H. Liu, 'Iterative frequency-domain equalization forsingle-carrier systems in doubly-dispersive channels,' in Proc. IEEE ACSSC,vol. 1, Nov. 2004, pp. 667-671 https://doi.org/10.1109/ACSSC.2004.1399218
  8. K. L. Baum, T. A. Thomas, F. W. Vook， and V. Nangia, 'Cyclic-prefix:An improved transmission method for broadband DS-CDMA cellular systems,' in Proc. IEEE WCNC, vol. 1, May 2002, pp. 183-188 https://doi.org/10.1109/WCNC.2002.993487
  9. F. Adachi, T. Sao, and T. Itagaki, "Performance of multicode DS-CDMA using frequency domain equalization in frequency selective fading channel," Electron. Lett. , vol. 39, no. 2, pp. 239-241, Jan. 2003 https://doi.org/10.1049/el:20030160
  10. 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 https://doi.org/10.1109/35.995852
  11. L. N. Tran, E. K. Hong, and H. Liu, "Two-stage hybrid decision feedbacke qualization for DS-CDMA systems," IEEE Trans. Wireless Commun.,Vol. 7, no. 5, pp. 1490-1494, May 2008 https://doi.org/10.1109/TWC.2008.061005
  12. W. G. Jeon, K. H. Chang, and Y. S. Cho, "An equalization technique fororthogonal frequency-division multiplexing systems in time-variant multipathchannels," IEEE Trans. Commun. , vol. 47, no. 1, pp. 27-32, Jan.1999 https://doi.org/10.1109/26.747810
  13. A. Stamoulis, S. N. Diggavi, and N. AI-Dhahir, "Intercarrier interferencein MIMO OFDM," IEEE Trans. Signal Process. , vol. 50, no. 10, pp. 2451-2464, Oct. 2002 https://doi.org/10.1109/TSP.2002.803347
  14. X. Cai and G. B. Giannakis, "Bounding performance and suppressing intercarrierinterference in wireless mobile OFDM," IEEE Trans. Commun. ,voI. 51, no.12, pp.2047-2056, Dec.2003 https://doi.org/10.1109/TCOMM.2003.820752
  15. A. Gorokhov and J. P. Linnartz, "Robust OFDM receivers for dispersive time-varying channels: equalizition and channel acquisition," IEEE Trans. Commun., vol. 52, no. 4, pp. 572-583, Apr. 2004 https://doi.org/10.1109/TCOMM.2004.826354
  16. P. Schniter, 'Low-complexity equalization of OFDM in doubly selective channels,' IEEE Trans. Signal Process., vol. 52, no. 4, pp. 1002-1011, Apr. 2004 https://doi.org/10.1109/TSP.2004.823503
  17. S. Tomasin, A. Gorokhov, H. Yang, and J. P. Linnartz, " Iterative interference cancellation and channel estination for mobile OFDM," IEEE Trans. Wireless Commun., vol. 4, no. 1, pp. 238-245, Jan. 2005 https://doi.org/10.1109/TWC.2004.840194
  18. J. Hagenaauer, 'The turbo principle: Tutorial introduction and state of the art," in Proc. International Symposium on Turbo Codes, Brest, France, Sept. 1997, pp. 1-11
  19. B. Ng, C. T. Lam, and D. Falconer, "Turbo frequency domain equalization for single-carrier broadband wireless wywtems," IEEE Trans. Wireless Commun., vol.6, no. 2, pp. 759-767, Feb. 2007 https://doi.org/10.1109/TWC.2007.05439
  20. Recommendation ITR-R M.1225, " Guideline for evaluation of radio transmission technologies for IMT-2000," 1997, question ITU-R 39/8
  21. Joint Technical Committee (Air) Standards Contribution, "Technical reporton RF channel characterization and system deployment modeling,"Tech. Rep., Sept. 1994, JTC(AIR)/94.09.23-065R6
  22. E. Onggosanusi, A. Papasakellariou, and A. Dabak, "Derivation of channel estimation error model for CDMA EBM evaluation methodology,"Tech. Rep., Dec. 2004, C30-20041206-022. [Online). Available: hftp://ftp3gpp2.org/TSGC/Working/2004/2004-12-Kauai/ TSG-C-2004-12-KauaνWG3
  23. G. Yue, X. Zhou, and X. Wang, 'Performance comparisons of channelestimation techniques in multipath fading CDMA,' IEEE Trans. WirelessCommun. , vol. 3, no. 3, pp. 716-724, May 2004 https://doi.org/10.1109/TWC.2004.827735
  24. L. Zhao and J. W. Mark, "Mobile speεd estimation based on average fadeslopε duration," IEEE Trans. Commun. , vol. 52, no. 12, pp. 2066-2069,Dec.2004 https://doi.org/10.1109/TCOMM.2004.836591