Polar-Precoding: A Unitary Finite-Feedback Transmit Precoder for Polar-Coded MIMO Systems
Information Theory
2021-09-15 v2 math.IT
Abstract
We propose a unitary precoding scheme, namely polar-precoding, to improve the performance of polar-coded MIMO systems. In contrast to the traditional design of MIMO precoding criteria, the proposed polar-precoding scheme relies on the \emph{polarization criterion}. In particular, the precoding matrix design comprises two steps. After selecting a basic matrix for maximizing the capacity in the first step, we design a unitary matrix for maximizing the polarization effect among the data streams without degrading the capacity. Our simulation results show that the proposed polar-precoding scheme outperforms the state-of-the-art DFT precoding scheme.
Cite
@article{arxiv.2104.05178,
title = {Polar-Precoding: A Unitary Finite-Feedback Transmit Precoder for Polar-Coded MIMO Systems},
author = {Jinnan Piao and Kai Niu and Jincheng Dai and Lajos Hanzo},
journal= {arXiv preprint arXiv:2104.05178},
year = {2021}
}
Comments
Polar-coded MIMO system, polarization criterion, precoding, unitary matrix