Journal of Communications and Networks

  • 제7권1호
  • /
  • Pages.21-28
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  • 2005
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  • 1229-2370(pISSN)
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  • 1976-5541(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

Multiple Access and Inter-Carrier Interference in OFDM-CDMA with Random Sequences

  • Jang Won Mee (Peter Kiewit Institute of Information Science, Technology & Engineering, Department of Computer and Electronics Engineering, University of Nebraska) ;
  • Nguyen Lim (Peter Kiewit Institute of Information Science, Technology & Engineering, Department of Computer and Electronics Engineering, University of Nebraska) ;
  • Bidarkar Pooja (Peter Kiewit Institute of Information Science, Technology & Engineering, Department of Computer and Electronics Engineering, University of Nebraska)
  • 발행 : 2005.03.01
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초록

In this paper, we analyze the performance of code division multiple access (CDMA) systems with orthogonal frequency division multiplexing (OFDM) that employ random spreading sequences in an additive white Gaussian noise (AWGN) channel. We obtain the probability density function (pdf) of the multiple access interference and extend the results to OFDM-CDMA systems to determine the pdf of multiple access and inter-carrier interference in terms of the number of users, the spreading length, the number of sub-carriers, and the frequency offset. We consider the synchronous downlink of cellular multi-carrier CDMA and derive a Gaussian approximation of the multiple access and inter-carrier interference. Overall the effect of frequency offset is shown to vary with the system loading. The analysis in this paper is critical for further development into fading channels and frequency selective multipath channels.

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참고문헌

  1. M. B. Pursley, 'Performance evaluation for phase-coded spread spectrum multiple-access communication-part I: System analysis,' IEEE Trans. Commun., vol. COM-25, pp. 795-799, Aug. 1977
  2. M. B. Pursley, D. V. Sarwate, and W. E. Stark, 'Error probability for directsequence spread-spectrum multiple-access communications-part I: Upper and lower bounds,' IEEE Trans. Commun., vol. COM-30, pp. 975-984, May 1982
  3. E. A. Geranitotis and M. B. Pursley, 'Error probability for direct-sequence spread-spectrum multiple-access communications-part II: Approximations,' IEEE Trans. Commun., vol. COM-30, pp. 985-995, May 1982
  4. J. S. Lehnert and M. B. Pursley, 'Error probability for binary directsequence spread-spectrum communications with random signature sequences,' IEEE Trans. Commun., vol. COM-35, no. 1, pp. 87-98. Jan. 1987
  5. R. K. Morrow and J. S. Lehnert, 'Bit-to-hit error dependence in slotted DS/SSMA packet system with random signature sequences,' IEEE Trans. Commun., vol. 37, no. 10, pp. 1052-1061, Oct. 1989 https://doi.org/10.1109/26.41160
  6. E. Geraniotis and B. Ghaffari, 'Performance of binary and quatenary direct-sequence spread-spectrum multiple-access systems with random sequences,' IEEE Trans. Commun., vol. 39, no. 5, pp. 713-724, May 1991 https://doi.org/10.1109/26.87162
  7. T. F. Wong, T. M. Lok, and J. S. Lehnert, 'Asynchronous multiple-access interference suppression and chip waveform selection with aperiodic random sequences,' IEEE Trans. Commun., vol. 47, no. 1, pp. 103-114, Jan. 1999 https://doi.org/10.1109/26.747817
  8. Telecommunication Industry Association, TIA/EIA, 'Mobile station-base station compatibility standard for dual-mode wideband spread spectrum cellular system IS-95A,' Washington, DC, 1995
  9. 3rd Generation Partnership Project 2 (3GPP2), www.3gpp2.org, 3GPP2 specifications, p. 126, Aug. 2002
  10. 3rd Generation Partnership Project (3GPP), www.3gpp.org, technical specification group radio access network, spreading and modulation (FDD), release 5, 3G TS 25. 213. V5. 0.0. p. 12,2002-03
  11. S. Kaiser, 'OFDM-CDMA versus DS-CDMA: Performance evaluation for fading channels,' in Proc. ICC'95, Seattle, June 1995, pp. 1722-1726
  12. S. Verdu, Multiuser Detection, New York: Cambridge University Press, 1998, p. 72
  13. S.Verdu and S.Shamai, 'Spectral efficiency of CDMA with random spreading,' IEEE Trans. Inform. Theory, vol. 45, no. 2, pp. 622-640, Mar. 1999 https://doi.org/10.1109/18.749007
  14. A. Papoulis and S. U. Pillai, Probability, Random Variables and Stochastic Processes, 4-th ed., McGraw Hill, 2002
  15. R. D. Gaudenzi, C. Elia, and R. Viola, 'Bandlirnited quasi-synchronous CDMA: a novel satellite access techniques for mobile and personal communication systems,' IEEE J. Select. Areas Commun., vol. 10, no. 2, pp.328-342, Feb. 1992 https://doi.org/10.1109/49.126984
  16. P. M. Moose, 'A technique for orthogonal frequency division multiplexing frequency offset correction,' IEEE Trans. Commun., vol. 42, no. 10, pp. 2908-2914, Oct. 1994 https://doi.org/10.1109/26.328961
  17. J. Armstrong, 'Analysis of new and existing methods of reducing intercarrier interference due to carrier frequency offset in OFDM,' IEEE Trans. Commun., vol. 47, no. 3, pp. 365-369, Mar. 1999 https://doi.org/10.1109/26.752816