Skip to main content
SpringerLink
Log in

A Decision Aided CDMA Receiver with Partially Adaptive Decorrelating Multi-User Interference Cancellation

  • Published:
Wireless Personal Communications Aims and scope Submit manuscript

Abstract

A CDMA receiver with enhanced multiple access interference (MAI) suppressionis proposed for a pilot symbols assisted system over multipath channels. Thedesign of the receiver involves the following procedure. First, blind adaptivecorrelators are constructed at different fingers based on the scheme ofgeneralized sidelobe canceller (GSC) to collect the multipath signals andsuppress MAI. A low-complexity partially adaptive (PA) realization of the GSCcorrelators is proposed which incorporates multi-user information for reducedrank processing. By a judiciously designed decorrelating procedure, a new GSCstructure is obtained in which the MAI are decorrelated and suppressedindividually. The next step is then a simple coherent combining of thecorrelator outputs with pilot aided channel estimation. Finally, furtherperformance enhancement is achieved by an iterative scheme in which the signalis reconstructed and subtracted from the GSC correlators input data, leadingto faster convergence of the receiver. The proposed low-complexity PA CDMAmulti-user receiver is shown to be robust to multipath fading and channelerrors, and achieve nearly the same performance of the ideal maximum SINR andMMSE receivers by using a small number of pilot symbols.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. S. Moshavi, “Multi-User Detection for DS-CDMA Communications”, IEEE Communications Magazine, Vol. 34, pp. 124-136, 1996.

    Google Scholar 

  2. R. Lupas and S. Verdu, “Linear Multiuser Detectors for Synchronous Code-Division Multiple-Access Channels”, IEEE Trans. Inform. Theory, Vol. 35, pp. 123-136, 1989.

    Google Scholar 

  3. S. Verdu, Multiuser Detection, Cambridge University Press: NY, 1998.

    Google Scholar 

  4. G. Woodward and B.S. Vucetic, “Adaptive Detection for DS-CDMA”, Proc. IEEE, Vol. 86, pp. 1413-1434, 1998.

    Google Scholar 

  5. U. Madhow and M. Honig, “MMSE Interference Suppression for Direct-Sequence Spread-Spectrum CDMA”, IEEE Trans. Commun., Vol. 42, pp. 3178-3188, 1994.

    Google Scholar 

  6. M. Honig, U. Madhow and S. Verdu, “Blind Adaptive Multiuser Detection”, IEEE Trans. Inform. Theory, Vol. 41, pp. 944-960, 1995.

    Google Scholar 

  7. B.D. Van Veen and K.M. Buckley, “Beamforming: A Versatile Approach to Spatial Filtering”, IEEE ASSP Magazine, Vol. 5, pp. 4-24, 1988.

    Google Scholar 

  8. M.K. Tsatsanis and Z. Xu, “Performance Analysis of Minimum Variance CDMA Receivers”, IEEE Trans. Signal Processing, Vol. 46, pp. 3014-3022, 1998.

    Google Scholar 

  9. Z. Tian, K.L. Bell and H.L. Van Trees, “Robust Constrained Linear Receivers for CDMA Wireless Systems”, IEEE Trans. Signal Processing, Vol. 49, pp. 1510-1522, 2001.

    Google Scholar 

  10. E.G. Ström and S.L. Miller, “Properties of the Single-Bit Single-User MMSE Receiver for DS-CDMA Systems”, IEEE Trans. Commun., Vol. 47, pp. 416-425, 1999.

    Google Scholar 

  11. J.S. Goldstein and I.S. Reed, “Subspace Selection for Partially Adaptive Sensor Array Processing”, IEEE Trans. Aerospace Electronic Syst., Vol. 33, pp. 539-544, 1997.

    Google Scholar 

  12. X. Bernstein and A.M. Haimovich, “Space-Time Optimum Combining for CDMA Communications”, Wireless Personal Commun., Vol. 3, pp. 73-89, 1996.

    Google Scholar 

  13. B.D. Van Veen, “Minimum Variance Beamforming”, in S. Haykin and A. Steinhardt (ed.), Adaptive Radar Detection and Estimation, John Wiley and Sons: NY, 1992.

    Google Scholar 

  14. D.A. Pados and S.N. Batalama, “Low-Complexity Blind Detection of DS/CDMA Signals Auxiliary-Vector Receivers”, IEEE Trans. Commun., Vol. 45, pp. 1586-1594, 1997.

    Google Scholar 

  15. H. Stark and Y. Yang, Vector Space Projections, John Wiley and Sons: NY, 1998.

    Google Scholar 

  16. M. Wax and Y. Anu, “Performance Analysis of the Minimum Variance Beamformer”, IEEE Trans. Signal Processing, Vol. 44, pp. 928-937, 1996.

    Google Scholar 

  17. J.G. Proakis, Digital Communications, 4th edn, McGraw-Hill: NY, 2001.

    Google Scholar 

  18. H. Yang and M.A. Ingram, “Design of Partially Adaptive Arrays Using the Singular-Value Decomposition”, IEEE Trans. Antennas and Propag., Vol. 45, pp. 843-850, 1997.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Communication Engineering and Microelectronics and Information Systems Research Center, National Chiao Tung University, Hsinchu, Taiwan, R.O.C

    Gau-Joe Lin & Ta-Sung Lee

Authors
  1. Gau-Joe Lin
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Ta-Sung Lee
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Ta-Sung Lee.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Lin, GJ., Lee, TS. A Decision Aided CDMA Receiver with Partially Adaptive Decorrelating Multi-User Interference Cancellation. Wireless Personal Communications 26, 53–76 (2003). https://doi.org/10.1023/A:1025308418197

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1023/A:1025308418197

Search

Navigation