A Computationally Efficient Joint Channel Estimation and Data Detection for SIMO Systems

Author

Pham, The-Hanh ; Nallanathan, A. ; Liang, Ying-Chang

Author_Institution

Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore

Volume

7

Issue

11

fYear

2008

fDate

11/1/2008 12:00:00 AM

Firstpage

4041

Lastpage

4046

Abstract

In this letter, we consider the problem of joint channel estimation and data detection for single-input multi-output (SIMO) systems under fast-fading environment with unknown spatially correlated noise. We present a computationally efficient iterative receiver based on the expectation conditional maximization (ECM) algorithm. Bit error rate (BER) performance of the proposed iterative receiver is simulated and compared with that of the maximum likelihood (ML) receiver with perfect channel state information (CSI). Simulation results show that the proposed iterative receiver achieves nearly the performance of ML receiver with perfect CSI and requires only a few iterations.

Keywords

channel estimation; error statistics; expectation-maximisation algorithm; fading; BER performance; SIMO systems; bit error rate performance; channel state information; data detection; expectation conditional maximization algorithm; fast-fading environment; iterative receiver; joint channel estimation; maximum likelihood receiver; single-input multi-output systems; spatial correlated noise; Algorithm design and analysis; Bit error rate; Channel estimation; Computational modeling; Covariance matrix; Electrochemical machining; Fading; Iterative algorithms; Maximum likelihood detection; Maximum likelihood estimation; Channel estimation; Expectation Conditional Maximization (ECM) algorithm; Expectation Maximization (EM) algorithm; data detection; single input multiple output (SIMO) system;

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/T-WC.2008.060934

Filename

4684574