Analysis of Iterative Demodulation Algorithm for MIMO System with Different Number of Antennas

To increase the capacity in 5G networks, it is planned to use Massive MIMO technology (i.e., MIMO with a large number of antennas). However, on the way to the practical application of this technology, there are many problems, in particular, the problem of demodulation algorithms synthesis. Therefore, the developing of demodulation algorithms with characteristics close to potentially possible and low computational complexity is very important. In this paper, we consider the demodulation algorithm using the criterion of the minimum mean square error (MMSE) and the Chebyshev iterative method. The noise immunity characteristics of MIMO system demodulation algorithms for different numbers of antennas and different numbers of iterations were obtained.