DocumentCode :
2661406
Title :
Robust recursive two-dimensional channel estimators for the MIMO-OFDM systems
Author :
Golovins, Eugene ; Ventura, Neco
Author_Institution :
Dept. of Electr. Eng., Univ. of Cape Town, Cape Town, South Africa
fYear :
2009
fDate :
17-20 May 2009
Firstpage :
630
Lastpage :
638
Abstract :
MIMO-OFDM systems operating in the wireless doubly-selective channels rely on the pilot-assisted transmissions to acquire channel state information. Application of the two-dimensional filtering algorithms to channel estimation in the MIMO configurations is challenging due to the complexity considerations. Furthermore, different pilot structures employed in different spatial links necessitate development of scalable and reconfigurable estimator structures. The estimation scheme should also be robust to the changes in channel statistics and operation mode restrictions. To address these problems, robust estimator architecture is presented, which is based on the transform-domain processing and separable adaptive filtering modules.
Keywords :
MIMO communication; OFDM modulation; adaptive filters; channel estimation; communication complexity; statistical analysis; transforms; wireless channels; MIMO-OFDM system; adaptive filtering module; channel state information; channel statistics; communication complexity; operation mode restriction; pilot-assisted transmission; robust estimator architecture; robust recursive two-dimensional channel estimator; transform-domain processing; two-dimensional filtering algorithm; wireless doubly-selective channel; Bandwidth; Frequency estimation; MIMO; OFDM; Receiving antennas; Recursive estimation; Robustness; Transceivers; Transmitters; Transmitting antennas; forgetting factor; mean square error; multipath; multiple-input multiple-output;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communication, Vehicular Technology, Information Theory and Aerospace & Electronic Systems Technology, 2009. Wireless VITAE 2009. 1st International Conference on
Conference_Location :
Aalborg
Print_ISBN :
978-1-4244-4066-5
Electronic_ISBN :
978-1-4244-4067-2
Type :
conf
DOI :
10.1109/WIRELESSVITAE.2009.5172520
Filename :
5172520
Link To Document :
بازگشت