OFDM Channel Estimation with RLS Algorithm for Different Pilot Schemes in Mobile Radio Transmission

Kazuhiko FUKAWA  Hiroshi SUZUKI  Toshiaki USAMI  

IEICE TRANSACTIONS on Communications   Vol.E86-B   No.1   pp.266-274
Publication Date: 2003/01/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Multiple Access and Signal Transmission Techniques for Future Mobile Communications)
OFDM,  channel estimation,  RLS,  scattered pilot,  mobile radio communications,  

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This paper proposes a new method to estimate the channel impulse response for Orthogonal Frequency Division Multiplexing (OFDM) mobile radio transmission. The method employs the Recursive Least Squares (RLS) algorithm so as to exploit the correlations in frequency and time domains, and can improve the estimation accuracy. It is also applicable to both the regular and scattered pilot schemes. Computer simulations demonstrate effectiveness of the method applied to the scattered pilot scheme.