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 Low-complexity channel estimation for beyond 3G systems
Please use this identifier to cite or link to this item http://hdl.handle.net/10773/8309

title: Low-complexity channel estimation for beyond 3G systems
authors: Marques, P.
Gameiro, A.
keywords: channel estimation
pilots
robust
MC-CDMA
issue date: 2004
publisher: IEEE
abstract: A robust minimum mean squared error (MMSE) channel estimation algorithm that does not rely on a priori knowledge of the channel statistics gives good results with MC-CDMA systems. The robust MMSE estimator takes advantages of the correlation between all Np pilot-subcarriers and requires one Np×Np matrix inversion for each pilot symbol of the burst structure. This complexity can be large depending on the number of pilot subcarriers in the system. The paper presents and analyses two low-complexity suboptimal approximations of the robust MMSE channel estimator. A complexity versus performance degradation comparison is done. The performance is presented in terms of mean square error for a 1024 tone MC-CDMA system over ETSI BRAN mobile channel models.
URI: http://hdl.handle.net/10773/8309
ISBN: 0-7803-8521-7
ISSN: 1090-3038
publisher version/DOI: http://dx.doi.org/10.1109/VETECF.2004.1400420
source: VTC2004-Fall: IEEE 60th Vehicular Technology Conference
appears in collectionsDETI - Comunicações

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