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Telecommunications and Radio Engineering
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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v79.i13.10
pages 1109-1119

CHEBYSHEV TYPE NONLINEAR ITERATIVE DEMODULATION ALGORITHM FOR MIMO SYSTEMS WITH LARGE NUMBER OF ANTENNAS

V. B. Kreyndelin
Moscow Technical University of Communications and Informatics (MTUCI) 8A, Aviamotornaya Str, Moscow, 111024, Russia
D. Yu. Pankratov
Moscow Technical University of Telecommunications and Informatics 8a, Aviamotornaya St., Moscow 111024, Russian Federation
A. G. Stepanova
Moscow Technical University of Communications and Informatics, 8a Aviamotornaya St., Moscow 111024, Russian Federation

ABSTRACT

Massive MIMO technology allows to obtain high energy efficiency and high spectral efficiency of the radio communication systems. This technology is planned to increase the capacity of 5G systems. However, there are some problems on the way of Massive MIMO application which are related to demodulation algorithms with high efficiency and low computational complexity. In this paper Chebyshev type nonlinear iterative demodulation algorithm for Massive MIMO system is proposed. Proposed nonlinear algorithm can be used for different types of modulation, it has polynomial complexity and doesn't require to calculate the eigenvalues of channel matrix. For the comparison of this algorithm with MMSE algorithm BER performance characteristics were obtained for different number of iterations. BER performance characteristics were obtained also for Chebyshev linear iterative demodulator with eigenvalues estimates of channel matrix.

REFERENCES

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