Joint Interference Alignment and Bi-Directional Scheduling for MIMO Two-Way Multi-Link Networks
Abstract
By means of the emerging technique of dynamic Time Division Duplex (TDD), the switching point between uplink and downlink transmissions can be optimized across a multi-cell system in order to reduce the impact of inter-cell interference. It has been recently recognized that optimizing also the order in which uplink and downlink transmissions, or more generally the two directions of a two-way link, are scheduled can lead to significant benefits in terms of interference reduction. In this work, the optimization of bi-directional scheduling is investigated in conjunction with the design of linear precoding and equalization for a general multi-link MIMO two-way system. A simple algorithm is proposed that performs the joint optimization of the ordering of the transmissions in the two directions of the two-way links and of the linear transceivers, with the aim of minimizing the interference leakage power. Numerical results demonstrate the effectiveness of the proposed strategy.
Cite
@article{arxiv.1505.01222,
title = {Joint Interference Alignment and Bi-Directional Scheduling for MIMO Two-Way Multi-Link Networks},
author = {A. M. Fouladgar and O. Simeone and O. Sahin and P. Popovski and S. Shamai},
journal= {arXiv preprint arXiv:1505.01222},
year = {2015}
}
Comments
To be presented at ICC 2015, 6 pages, 7 figures