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, Macaristan, 1 - 05 Temmuz 2007, ss.733-734 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası:
  • Doi Numarası: 10.1109/istmwc.2007.4299175
  • Basıldığı Şehir: Budapest
  • Basıldığı Ülke: Macaristan
  • Sayfa Sayıları: ss.733-734
  • İstanbul Üniversitesi Adresli: Evet

Özet

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.