Iterative channel estimation in MIMO-OFDM systems

Author

Wang Lidong ; Yang Qinghui ; Zhigang, Li

Author_Institution

Univ. of Sci. & Technol. Liaoning, Anshan, China

Volume

2

fYear

2011

Firstpage

906

Lastpage

909

Abstract

The multi-input-multi-output (MIMO) orthogonal frequency division multiplexing (OFDM) system is attractive for its high channel capacities and robustness to multipath fading in wireless communications. Channel estimation and data detection are investigated for MIMO-OFDM systems over time- and frequency-selective (doubly selective) channels. Based on the complex exponential basis expansion channel model, a pilot embedded channel estimation scheme with low computational complexity and high data rate efficiency is proposed. An iterative edition exploiting recovered data to enhance the performance is also presented.

Keywords

MIMO communication; OFDM modulation; channel capacity; channel estimation; communication complexity; fading channels; iterative methods; multipath channels; radiocommunication; MIMO orthogonal frequency division multiplexing system; MIMO-OFDM systems; channel capacity; complex exponential basis expansion channel model; computational complexity; data detection; data rate efficiency; doubly selective channels; frequency-selective channels; iterative channel estimation; multiinput-multioutput orthogonal frequency division multiplexing system; multipath fading; pilot embedded channel estimation scheme; time-selective channels; wireless communications; Fading; IP networks; OFDM; Transmitting antennas; MIMO-OFDM; channel estimation; doubly selective; iterative; pilot embedded;

fLanguage

English

Publisher

ieee

Conference_Titel

Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC), 2011

Conference_Location

Harbin

Print_ISBN

978-1-4244-9792-8

Type

conf

DOI

10.1109/CSQRWC.2011.6037102

Filename

6037102