Estimation of basis frequencies for time-varying SIMO channels : a second-order method
Data(s) |
01/08/2010
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Resumo |
The complex exponential basis expansion model (CE-BEM) provides an accurate description for the time-varying (TV) channels encountered in mobile communications. Many blind channel identification and equalization approaches based on the CE-BEM require precise knowledge of the basis frequencies of TV channels. Existing methods for basis frequency estimation usually resort to the higher-order statistics of channel outputs and impose strict constraints on the source signal. In this paper, we propose a novel method to estimate the basis frequencies for blind identification and equalization of time-varying single-input multiple-output (SIMO) finite-impulse-response (FIR) channels. The proposed method exploits only the second-order statistics of channel outputs and does not require strong conditions on the source signal. As a result, it exhibits superior performance to the existing basis frequency estimation methods. The validity of our method is demonstrated by numerical simulations. |
Identificador | |
Idioma(s) |
eng |
Publicador |
IEEE |
Relação |
http://dro.deakin.edu.au/eserv/DU:30032311/xiang-estimationof-2010.pdf http://dx.doi.org/10.1109/TSP.2010.2048104 |
Direitos |
2010, IEEE |
Palavras-Chave | #basis frequency #complex exponential basis expansion #second-order statistics #time-varying SIMO channel |
Tipo |
Journal Article |