Blind Channel Estimation in MIMO-OFDM Systems

Wei BAI  Chen HE  Ling-ge JIANG  Hong-wen ZHU  

IEICE TRANSACTIONS on Communications   Vol.E85-B   No.9   pp.1849-1853
Publication Date: 2002/09/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technology
mobile communication,  channel estimation,  MIMO-OFDM systems,  blind,  identifiability,  

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In this letter, we investigate the blind channel estimation in MIMO-OFDM systems based on the second-order statistics of the channel outputs only. We exploit the cyclostationarity induced by OFDM with cyclic prefix, establish the sufficient identifiability conditions, and develop a subspace algorithm. Finally, we demonstrate the validity of the algorithm by computer simulations.