An efficient joint data detection and channel estimation technique for uplink MC-CDMA systems based on SAGE algorithm

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

16th IST Mobile and Wireless Communications, Budapest, Hungary, 1 - 05 July 2007, pp.733-734 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume:
  • Doi Number: 10.1109/istmwc.2007.4299175
  • City: Budapest
  • Country: Hungary
  • Page Numbers: pp.733-734
  • 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, called the spece-alternating-generalized-expectation-maximization (SAGE) algorithm which is very suitable for the the multicarrier signal formats. Application of the SAGE 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.