SAGE based suboptimal receiver for downlink MC-CDMA systems
IEEE Communications Letters, cilt.15, sa.12, ss.1381-1383, 2011 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 15 Sayı: 12
- Basım Tarihi: 2011
- Doi Numarası: 10.1109/lcomm.2011.102611.111722
- Dergi Adı: IEEE Communications Letters
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.1381-1383
- Anahtar Kelimeler: downlink, joint channel estimation and data detection, MC-CDMA, SAGE algorithm, Suboptimal receiver
- Maltepe Üniversitesi Adresli: Hayır
Özet
An iterative joint data detection and channel estimation algorithm for downlink multi-carrier code division multiple access (MC-CDMA) systems is proposed. The resulting algorithm is a space alternating generalized expectation-maximization (SAGE) algorithm which updates the data sequences serially and the channel parameters in parallel, leading to a receiver structure that also incorparates interchannel interference cancellation. Its performance is compared with various Minimum Mean Square Error (MMSE) estimators for a multipath frequency selective fading channel using simulations. It is illustrated that the proposed SAGE algorithm performs better than the MMSE estimators considered in this paper. © 2006 IEEE.