Factor graph based detection and channel estimation for MIMO-OFDM systems in doubly selective channel

Author

Xu, Xiang ; Mathar, Rudolf

Author_Institution

Inst. for Theor. Inf. Technol., RWTH Aachen Univ., Aachen, Germany

fYear

2010

fDate

19-22 Sept. 2010

Firstpage

456

Lastpage

460

Abstract

Based on the factor graph, a joint channel estimation and detection method is proposed for orthogonal frequency division multiplexing (OFDM) systems employing multiple transmit and receive antennas (MIMO). Using belief propagation, statistics of the fast varying MIMO multipath channel are utilized in estimating channel coefficients. By proper message scheduling and passing, the proposed receiver is effective for MIMO-OFDM system in fast fading frequency-selective channel.

Keywords

MIMO communication; OFDM modulation; channel estimation; fading channels; graph theory; multipath channels; MIMO-OFDM systems; belief propagation; channel estimation; doubly selective channel; factor graph based detection; fast fading frequency-selective channel; fast varying multipath channel; message passing; message scheduling; multiple receive antennas; multiple transmit antennas; orthogonal frequency division multiplexing; Channel estimation; Correlation; Joints; MIMO; OFDM; Receivers; Time frequency analysis; MIMO; OFDM; channel estimation; factor graph; iterative receiver;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communication Systems (ISWCS), 2010 7th International Symposium on

Conference_Location

York

ISSN

2154-0217

Print_ISBN

978-1-4244-6315-2

Type

conf

DOI

10.1109/ISWCS.2010.5624320

Filename

5624320