Novel hybrid precoder based on SVD for downlink mmWave massive MU-MIMO systems

Abstract

We propose a hybrid precoder for downnlik mmWave massive MU-MIMO system designed through the maximization of the mutual information' upper bound. The methodology of a large number of the hybrid precoder proposed in the literature is focused on finding a hybrid approximation to a digital precoder. However, for our proposed design a known signal processing methodology for traditional MIMO is adapted to mmWave scenarios. Numerical results in terms of mutual information rate show a performance improvement obtained by our proposal in relation to others considered hybrid precoders.