Polar-Precoding: A Unitary Finite-Feedback Transmit Precoder for Polar-Coded MIMO Systems

We propose a unitary precoding scheme, namely polar-precoding, to improve the performance of polar-coded MIMO systems. In contrast traditional design criteria, proposed polar-precoding scheme relies on polarization criterion . particular, matrix comprises two steps. After selecting basic for maximizing capacity in first step, we polarization effect among data streams without degrading capacity. Our simulation results show that outperforms state-of-the-art DFT scheme.