J. García-Naya, Héctor J. Pérez-Iglesias, A. Dapena, L. Castedo
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引用次数: 3
Abstract
This paper focuses on blind channel estimation in Alamouti coded systems with one receiving antenna. We present a comparative study of several blind channel estimation techniques, based on high order statistics (HOS) and second order statistics (SOS), in realistic indoor scenarios. These methods are based on eigendecomposition of a square matrix formed with statistics of the observed signals. They also exploit the orthogonality property of the Alamouti coded channel matrix. Experimental evaluation is carried out using a MIMO testbed at the 2.4 GHz band. The results show the excellent performance of the SOS-based blind channel estimation technique in either line of sight (LOS) and Non-LOS (NLOS) indoor scenarios.
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