EM-based joint data detection and channel estimation for uplink MC-CDMA systems over frequency selective channels


Dogan H. , Panaytrci E., Çırpan H. A. , Fleury B. H.

IEEE 15th Signal Processing and Communications Applications Conference, Eskişehir, Turkey, 11 - 13 June 2007, pp.137-138 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume:
  • Doi Number: 10.1109/siu.2007.4298802
  • City: Eskişehir
  • Country: Turkey
  • Page Numbers: pp.137-138
  • Istanbul University Affiliated: Yes

Abstract

This paper is concerned with joint channel estimation and data detection for uplink multicarrier code-division multiple-access (MC-CDMA) systems in the presence of frequency fading channel. The detection and estimation algorithm, implemented at the receiver, is based on a version of the expectation maximization (EM) technique which is very suitable for the multicarrier signal formats. 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 algorithm has excellent BER end estimation performance.