Journal of Communications and Networks

  • 제12권6호
  • /
  • Pages.605-615
  • /
  • 2010
  • /
  • 1229-2370(pISSN)
  • /
  • 1976-5541(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

Linear Suppression of Intercarrier Interference in Time-Varying OFDM Systems: From the Viewpoint of Multiuser Detection

  • Li, Husheng (Department of Electrical Engineering and Computer Science, the University of Tennessee)
  • 투고 : 2008.03.15
  • 발행 : 2010.12.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Intercarrier interference (ICI) in orthogonal frequency division multiplexing (OFDM) systems, which causes substantial performance degradation in time-varying fading channels, is analyzed. An equivalent spreading code formulation is derived based on the analogy of OFDM and code division multiple access (CDMA) systems. Techniques as linear multiuser detection in CDMA systems are applied to suppress the ICI in OFDM systems. The performance of linear detection, measured using multiuser efficiency and asymptotic multiuser efficiency, is analyzed given the assumption of perfect channel state information (CSI), which serves as an upper bound for the performance of practical systems. For systems without CSI, time domain and frequency domain channel estimation based linear detectors are proposed. The performance gains and robustness of a linear minimum mean square error (LMMSE) filter over a traditional filter (TF) and matched filter (MF) in the high signal-to-noise ratio (SNR) regime are demonstrated with numerical simulation results.

키워드

참고문헌

  1. A. Stamoulis, S. N. Diggavi, and N. Al-Dhahir, "Intercarrier interference in MIMO OFDM," IEEE Trans. Signal Process., vol. 50, pp. 2451-2464, Oct. 2002. https://doi.org/10.1109/TSP.2002.803347
  2. Y. Mostofi and D. C. Cox, "ICI mitigation for pilot-aided OFDM mobile systems," IEEE Trans. Wireless Commun., vol. 4, pp. 765-774, Mar. 2005.
  3. J. Armstrong, "Analysis of new and existing methods of reducing intercarrier interference due to carrier frequency offset in OFDM," IEEE Trans. Commun., vol. 47, pp. 365-369, Mar. 1999. https://doi.org/10.1109/26.752816
  4. D. Marabissi, R. Fantacci, and S. Papini, "Robust multiuser interference cancellation for OFDM systems with frequency offset," IEEE Trans. Wireless Commun., vol. 5, pp. 3068-3076, Nov. 2006. https://doi.org/10.1109/TWC.2006.04641
  5. Y. Mostofi and D. C. Cox, "Timing synchronization in high mobility OFDM," in Proc. IEEE ICC, June 2004.
  6. D. Huang and K. B. Lataief, "Enhanced carrier frequency offset estimation for OFDM using channel side information," IEEE Trans. Wireless Commun., vol. 5, pp. 2784-2793, Oct. 2006. https://doi.org/10.1109/TWC.2006.04507
  7. S. Verdu, Multiuser Detection. Cambridge University Press, Cambridge, UK, 1998.
  8. S. Verdu, "Minimum probability of error for asynchronous Gaussian multiple-access channels," IEEE Trans. Inf. Theory, vol. 32, pp. 85-96, Jan. 1986. https://doi.org/10.1109/TIT.1986.1057121
  9. S. Verdu, Optimal Multi-User Signal Detection. Ph.D. thesis, University of Illinois at Urbana-Champaign, Aug. 1984.
  10. R. Lupas and S. Verdu, "Linear multiuser detectors for synchronous code-division multiple-acess channels," IEEE Trans. Inf. Theory, vol. 35, pp. 123-136, Aug. 1989. https://doi.org/10.1109/18.42183
  11. D. Tse and S. Hanly, "Linear multiuser receivers: Effective interference, effective bandwidth and user capacity," IEEE Trans. Inf. Theory, vol. 45, pp. 641-657, Mar. 1999. https://doi.org/10.1109/18.749008
  12. P. Alexander, A. Grant, and M. C. Reed, "Iterative detection of codedivision multiple-acess with error control coding," Eur. Trans. Telecommun., vol. 9, pp. 419-426, Aug. 1998. https://doi.org/10.1002/ett.4460090504
  13. H. Li and H. V. Poor, "Power allocation and spectral efficiency of DSCDMA systems in fading channels with fixed QoS-Part I: Single-rate case," IEEE Trans. Wireless Commun., vol. 5, pp. 2516-2528, Sept. 2006. https://doi.org/10.1109/TWC.2006.1687775
  14. X. Wang and H. V. Poor, "Subspace methods for blind channel estimation and multiuser detection in CDMA systems," Wireless Networks, vol. 6, pp. 59-71, Feb. 2000. https://doi.org/10.1023/A:1019156607515
  15. S. Shamai and S. Verdu, "Decoding only the strongest CDMA users," Codes, Graphs, and Systems, R. Blahut and R. Koetter, Eds., pp. 217-228, Kluwer, 2002.
  16. W. C. Jakes, Mircrowave Mobile Communications. IEEE Press, Piscataway, NJ, 1994.
  17. 3rd generation partnership project 2 (3GPP2), cdma2000 evaluation methodology, revision 0, Dec. 2004.