Blind Recognition of Linear Space–Time Block Codes: A Likelihood-Based Approach

Abstract : Blind recognition of communication parameters is a research topic of high importance for both military and civilian communication systems. Numerous studies about carrier frequency estimation, modulation recognition as well as channel identification are available in literature. This paper deals with the blind recognition of the space–time block coding (STBC) scheme used in multiple input–multiple-output (MIMO) communication systems. Assuming there is perfect synchronization at the receiver side, this paper proposes three maximum-likelihood (ML)-based approaches for STBC classification: the optimal classifier, the second-order statistic (SOS) classifier, and the code parameter (CP) classifier. While the optimal and the SOS approaches require ideal conditions, the CP classifier is well suited for the blind context where the communication parameters are unknown at the receiver side. Our simulations show that this blind classifier is more easily implemented and yields better performance than those available in literature.
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Vincent Choqueuse, Mélanie Marazin, Ludovic Collin, Koffi Clément Yao, Gilles Burel. Blind Recognition of Linear Space–Time Block Codes: A Likelihood-Based Approach. IEEE Transactions on Signal Processing, Institute of Electrical and Electronics Engineers, 2010, 58 (3), pp.1290 - 1299. ⟨10.1109/TSP.2009.2036062⟩. ⟨hal-00460048⟩

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