Iterative joint channel estimation and successive interference cancellation using a SISO-SAGE algorithm for coded CDMA

Author

Hu, B. ; Kocian, A. ; Piton, R. ; Hviid, A. ; Fleury, B.H. ; Rasmussen, L.K.

Author_Institution

Dept. of Commun. Technol., Aalborg Univ., Denmark

Volume

1

fYear

2004

fDate

7-10 Nov. 2004

Firstpage

622

Abstract

In this paper we propose an extension of the space alternating generalized expectation maximization (SAGE) algorithm that accepts as input and provides as output soft information. This so-called soft-input soft-output (SISO) SAGE algorithm is applied to joint successive interference cancellation and channel estimation and combined with SISO single-user decoders in an iterative CDMA receiver. Monte Carlo simulations in flat Rayleigh fading channel show that this receiver is robust against channel estimation errors and can support a high system.

Keywords

Monte Carlo methods; Rayleigh channels; channel estimation; code division multiple access; interference suppression; iterative decoding; radio receivers; Monte Carlo simulation; SAGE algorithm; SISO; channel estimation; decoders; flat Rayleigh fading channel; iterative CDMA receiver; joint successive interference cancellation; soft-input soft-output; space alternating generalized expectation maximization; Channel estimation; Communications technology; Fading; Feedback; Frequency estimation; Interference cancellation; Iterative algorithms; Iterative decoding; Multiaccess communication; Telecommunications;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2004. Conference Record of the Thirty-Eighth Asilomar Conference on

Print_ISBN

0-7803-8622-1

Type

conf

DOI

10.1109/ACSSC.2004.1399209

Filename

1399209