Title :
Iterative channel estimation in MIMO-OFDM systems
Author :
Wang Lidong ; Yang Qinghui ; Zhigang, Li
Author_Institution :
Univ. of Sci. & Technol. Liaoning, Anshan, China
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;
Conference_Titel :
Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC), 2011
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-9792-8
DOI :
10.1109/CSQRWC.2011.6037102
