Nonlinear iterative precoding algorithm for MIMO multiuser systems

Abstract

A modification of the known linear precoding algorithm CLTD (closed-loop transmit diversity) intended for multiuser radio communication systems and using theMIMOtechnology has been proposed. The efficiency of the original precoding algorithm CLTD possessing a number of advantages as compared to earlier precoding methods based on complete information about the communication channel state is enhanced at the expense of introducing nonlinearity. The use of nonlinear procedure of ordered successive interference cancellation (OSIC) in forming the precoding matrix makes it possible to significantly increase the noise immunity of the entire system as a whole at the expense of a slight rise of algorithm computational complexity. In addition, the results of computer simulation are presented reflecting the efficiency of the proposed modification of the algorithm for forming a precoding matrix as compared to the original CLTD algorithm.

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Correspondence to V. B. Kreyndelin.

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Original Russian Text © V.B. Kreyndelin and T.B.K. Ben Rejeb, 2017, published in Izvestiya Vysshikh Uchebnykh Zavedenii, Radioelektronika, 2017, Vol. 60, No. 10, pp. 581–591.

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Kreyndelin, V.B., Ben Rejeb, T.B.K. Nonlinear iterative precoding algorithm for MIMO multiuser systems. Radioelectron.Commun.Syst. 60, 449–457 (2017). https://doi.org/10.3103/S073527271710003X

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