On the blind channel identifiability of multiple-input multiple-output space-time block code systems using Joint Approximate Diagonalization of Eigenmatrices

Channel identifiability for multiple-input multiple-output space-time block code MIMO-STBC systems using Joint Approximate Diagonalization of Eigenmatrices JADE is studied in this paper. Compared with the previous blind MIMO-STBC channel estimation methods in literature, the method proposed in this paper is more suitable for non-cooperative scenario because it needs less prior information and can be applied to a general class of STBCs. The main contribution of the paper consists in the theoretical proof that, although the sources transmitted by different antennas of MIMO-STBC systems are not independent, they can be retrieved from the received data by directly using JADE in most cases. The conclusion is also demonstrated by a simulation. This shows that the classical JADE algorithm can be applied to a wider range of situations rather than strictly independent sources. Copyright © 2013 John Wiley & Sons, Ltd.

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