Full length article: Iterative joint data detection and channel estimation for uplink MC-CDMA systems in the presence of frequency selective channels

  • Authors:

  • Erdal PanayıRcı;Hakan DoğAn;Hakan A. ÇıRpan;Alexander Kocian;Bernard H. Fleury

  • Affiliations:

  • Department of Electronics Engineering, Kadir Has University, Cibali 34083, Istanbul, Turkey;Department of Electrical and Electronics Engineering, Istanbul University, Avcilar 34320, Istanbul, Turkey;Department of Electrical and Electronics Engineering, Istanbul University, Avcilar 34320, Istanbul, Turkey;University of Rome Tor Vergada, Center for TeleInfrastructure(CTiF), Rome, Italy;Aalborg Univeristy, Fredrik Bajers Vej 7A, A3-202, Aalborg DK-9220, Denmark

  • Venue:
  • Physical Communication
  • Year:
  • 2010

Quantified Score

Hi-index 0.00

Visualization

Abstract

This paper is concerned with joint multiuser detection and multichannel estimation (JDE) for uplink multicarrier code-division multiple-access (MC-CDMA) systems in the presence of frequency selective channels. The detection and estimation, implemented at the receiver, are based on a version of the expectation maximization (EM) algorithm and the space-alternating generalized expectation-maximization (SAGE) which are very suitable for multicarrier signal formats. The EM-JDE receiver updates the data bit sequences in parallel, while the SAGE-JDE receiver reestimates them successively. The channel parameters are updated in parallel in both schemes. Application of the EM-based algorithm to the problem of iterative data detection and channel estimation leads to a receiver structure that also incorporates a partial interference cancelation. Computer simulations show that the proposed algorithms have excellent BER end estimation performance.