Blind Channel Identification in (2 × 1) Alamouti Coded Systems Based on Maximizing the Eigenvalue Spread of Cumulant Matrices

Authors:
Héctor J. Pérez-Iglesias;Daniel Iglesia;Adriana Dapena;Vicente Zarzoso
Affiliations:
Departamento de Electrónica y Sistemas, Universidade da Coruña, Facultad de Informática, Coruña, Spain 15071 A;Departamento de Electrónica y Sistemas, Universidade da Coruña, Facultad de Informática, Coruña, Spain 15071 A;Departamento de Electrónica y Sistemas, Universidade da Coruña, Facultad de Informática, Coruña, Spain 15071 A;Laboratoire I3S, Université de Nice-Sophia Antipolis, Les Algorithmes, Euclide-B, Sophia Antipolis, France 06903
Venue:
ICA '09 Proceedings of the 8th International Conference on Independent Component Analysis and Signal Separation
Year:
2009

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Abstract

Channel estimation in the (2 ×1) Alamouti space-time block coded systems can be performed blindly from the eigendecomposition (or diagonalization) of matrices composed of the receive antenna output 4th-order cumulants. In order to estimate the channel, we will propose to choose the cumulant matrix with maximum eigenvalue spread of cumulant-matrix. This matrix is determined in closed form. Simulation results show that the novel blind channel identification technique presents a satisfactory performance and low complexity.