A New Dynamic Partial Precoding Technique for Mc-Cdma Systems Employing Psk Modulation

  • C. Masouros
  • E. Alsusa
Part of the Lecture Notes Electrical Engineering book series (LNEE, volume 1)

Abstract

A new precoding technique for MC-CDMA is presented, that outperforms conventional precoding by exploiting useful interference. This is done by selectively pre-decorrelating users to destructive interference while allowing interference when it is expected to contribute to their signal. The resulting SINR improvement is achieved by making use of energy existent in the system so performance enhancement is attained without the need for increased transmitted power-per-user. This, however, comes at the expense of additional processing at the transmitter for the allocation of the dynamic precoding matrix. The proposed technique applies to the downlink of cellular MC-CDMA systems. Comparative simulations of this and other precoding methods provide evidence that the proposed method offers significant performance benefits.

Keywords

MC-CDMA precoding adaptive signal processing interference multiuser channels suppression 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    P. Bisaglia, N. Benvenuto, and S. Quitadamo, “Performance comparison of singleuser pre-equalization techniques for uplink MC-CDMA systems,” in Proceedings IEEE Global Telecommunications Conference (GLOBECOM’03), San Francisco, USA, pp. 3402-3406, December 2003.Google Scholar
  2. [2]
    B. R. Vojcic and W. M. Jang, “Transmitter precoding in synchronous multiuser communications,” IEEE Trans. on Communications, vol. 46, no. 10, pp. 1346–1355, Oct. 1998.CrossRefGoogle Scholar
  3. [3]
    A. Silva and A. Gameiro, “Pre-Filtering Antenna Array for Downlink TDD MC-CDMA Systems”, in Proceedings Vehicular Technology Conference, VTC 2003-Spring, pp. 641-645, Apr. 2003.Google Scholar
  4. [4]
    R. Esmailzadeh, E. Sourour, and M. Nakagawa, “Pre-rake diversity combining in time division duplex CDMA mobile communications,” IEEE Trans. on Vehicular Technology, vol. 48, no. 3, pp. 795–801, May 1999.CrossRefGoogle Scholar

Copyright information

© Springer 2007

Authors and Affiliations

  • C. Masouros
    • 1
  • E. Alsusa
    • 1
  1. 1.School of Electrical and Electronic EngineeringThe University of ManchesterManchesterUK

Personalised recommendations