Double Khatri-Rao Space-Time-Frequency coding using semi-blind PARAFAC based receiver

Abstract : We first introduce a new class of tensor models for fourth-order tensors, referred to as “nested PARAFAC models.” Then, we present a space-time-frequency (STF) coding scheme for multiple antenna orthogonal frequency division multiplexing systems. This scheme, called double Khatri-Rao STF (D-KRSTF) coding, combines time-domain spreading with space-frequency precoding and provides an extension of Khatri-Rao space-time (KRST) coding . We show that the received signals define a fourth-order tensor satisfying two nested PARAFAC models, and a semi-blind receiver is then derived using a two-step alternating least squares algorithm for joint channel and symbol estimation. Simulation results show that our receiver offers superior performance compared with previously proposed tensor-based solutions and operates close to the zero forcing receiver with perfect channel state information.
Type de document :
Article dans une revue
IEEE Signal Processing Letters, Institute of Electrical and Electronics Engineers, 2013, 20 (5), pp.471-474. <10.1109/LSP.2013.2248149>


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Contributeur : Gérard Favier <>
Soumis le : vendredi 18 décembre 2015 - 00:33:32
Dernière modification le : vendredi 18 décembre 2015 - 01:11:59

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André De Almeida, Gérard Favier. Double Khatri-Rao Space-Time-Frequency coding using semi-blind PARAFAC based receiver . IEEE Signal Processing Letters, Institute of Electrical and Electronics Engineers, 2013, 20 (5), pp.471-474. <10.1109/LSP.2013.2248149>. <hal-01246044>

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