Title :
A CME Based Channel Estimation Approach for MIMO-OFDM Systems
Author :
Lu, Zhen ; Kadi, Anthony ; Aubrey, Tim
Author_Institution :
Fac. of Eng. & Inf. Technol., Univ. of Technol., Sydney, Sydney, NSW, Australia
Abstract :
A pilot-assisted, conditional model-order estimation (CME) based channel estimation algorithm is presented. The algorithm is proposed for MIMO-OFDM systems and can detect both channel frequency responses and number of multi-path taps. In addition, the modified CME estimator is also verified its capacity in determining the nonzero taps. The performance of the proposed approach is compared to the popular minimum description length (MDL) algorithm for estimation of the number of channel paths, by means of simulation in the context of a 2times2 MIMO-OFDM transceiver system. Result indicates that the new algorithm is superior in channel order estimation to the MDL algorithm in MMO-OFDM system over a noisy frequency selective fading channel.
Keywords :
MIMO communication; OFDM modulation; channel estimation; fading channels; multipath channels; transceivers; MIMO-OFDM transceiver system; channel estimation approach; channel frequency responses; conditional model-order estimation; minimum description length; multipath taps; noisy frequency selective fading channel; Channel estimation; Diversity reception; Fading; Frequency estimation; Intersymbol interference; Least squares approximation; MIMO; OFDM; Receiving antennas; Transmitters;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
DOI :
10.1109/WICOM.2009.5302004
