Spatial filter decomposition for interference mitigation

Abstract : This paper presents a two-part decomposition of a spatial filter having to optimize the reception of a useful signal in the presence of an important co-channel interference level. The decomposition highlights the role of two parts of the filter, one devoted to the maximization of the signal to noise ratio and the other devoted to the interference cancellation. The two-part decomposition is used in the estimation process of the optimal reception filter. We propose then an estimation algorithm that follows this decomposition, and the global spatial filter is finally obtained through an optimal-weighted combination of two filters. It is shown that this two-component-based decomposition algorithm overcomes other previously published solutions involving eigenvalue decompositions.
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Rabah Maoudj, Michel Terre, Luc Fety, Christophe Alexandre, Philippe Mege. Spatial filter decomposition for interference mitigation. EURASIP Journal on Wireless Communications and Networking, SpringerOpen, 2014, 2014 (1), pp.127. ⟨10.1186/1687-6180-2014-127⟩. ⟨hal-01126487⟩

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