Skip to main content

A low‐complexity multiuser detector for up‐link CDMA QPSK mobile radio communications

  • Published:
Wireless Networks Aims and scope Submit manuscript

Abstract

This paper deals with a multiuser detector based on a new decorrelating approach for asynchronous up‐link DS/CDMA communications in which the QPSK modulation scheme is used in transmission. It is shown here that the receiver proposed is near–far resistant and exhibits a low complexity which allows real‐time operation. Performance is expressed in terms of bit error rate (BER) which has been derived by simulations under the assumption of a slowly frequency‐selective Rayleigh fading channel.

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

Access this article

Subscribe and save

Springer+ Basic
$34.99 /Month
  • Get 10 units per month
  • Download Article/Chapter or eBook
  • 1 Unit = 1 Article or 1 Chapter
  • Cancel anytime
Subscribe now

Buy Now

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

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. GSM Recommendation 05.05 (Version 3.7.0).

  2. R. Lupas and S. Verdù, Near-far resistance of multi-user detectors in asynchronous channels, IEEE Transactions on Communications 38 (April 1990) 496–508.

    Google Scholar 

  3. S.S.H. Wijayasuria, G.H. Norton and J.P. McGeehan, Sliding window decorrelating algorithm for DS-CDMA receivers, Electronics Letters 28(17) (August 1992).

  4. S.Y. Yoon, S.E. Hong, J. Ahn and H.S. Lee, Pilot symbol aided coherent decorrelating detector for up-link CDMA mobile radio communication, Electronics Letters 30(12) (June 1994).

  5. F. Zheng and S. Barton, Near–far resistant detection of CDMA signals via isolation bit insertion, IEEE Transactions on Communications 43 (February 1995).

  6. Z. Zvonar and D. Brady, Suboptimal multiuser detection for frequency-selective Rayleigh fading synchronous channels, IEEE Transactions on Communications 43 (February/March/April 1995).

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Del Re, E., Fantacci, R., Morosi, S. et al. A low‐complexity multiuser detector for up‐link CDMA QPSK mobile radio communications. Wireless Networks 5, 461–465 (1999). https://doi.org/10.1023/A:1019188119810

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1023/A:1019188119810

Keywords