Performance of multiuser detection with decision-directed channel estimation

Author

Ma, Yao ; Schober, R. ; Pasupathy, S. ; Lim, T.J.

Author_Institution

Dept. of ECpE, Iowa State Univ., IN, USA

Volume

1

fYear

2003

fDate

1-5 Dec. 2003

Firstpage

247

Abstract

In this paper, we study the performance of a general linear coherent multiuser receiver with decision-directed channel estimation (DDCE) for doubly-selective Rician-fading CDMA channels. Employing the multivariate Gaussian approximation (MGA) and a decision variable-based moment generating function (DV-MGF) approach, both exact and low-complexity approximate bit error probability (BEP) formulas for a linear detector with genie-aided DDCE are provided. Furthermore, using a Markov chain steady-state analysis, a tight BEP approximation for non-ideal DDCE is provided taking into account the error propagation in the decision feedback. Some new findings are illustrated by simulation results.

Keywords

Gaussian processes; Markov processes; Rician channels; channel estimation; code division multiple access; error statistics; multiuser detection; Markov chain steady-state analysis; bit error probability; decision feedback; decision variable-based moment generating function; decision-directed channel estimation; doubly-selective Rician-fading CDMA channels; general linear coherent multiuser receiver; multiuser detection; multivariate Gaussian approximation; Channel estimation; Detectors; Diversity reception; Fading; Feedback; Filters; Least squares approximation; Multiaccess communication; Multiuser detection; Performance analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2003. GLOBECOM '03. IEEE

Print_ISBN

0-7803-7974-8

Type

conf

DOI

10.1109/GLOCOM.2003.1258239

Filename

1258239