How Many Transmit Antennas to Use in a MIMO Interference Channel
Information Theory
2011-06-01 v1 math.IT
Abstract
The problem of finding the optimal number of data streams to transmit in a multi-user MIMO scenario, where both the transmitters and receivers are equipped with multiple antennas is considered. Without channel state information at any transmitter, with a zero-forcing receiver each user is shown to transmit a single data stream to maximize its own outage capacity in the presence of sufficient number of users. Transmitting a single data stream is also shown to be optimal in terms of maximizing the sum of the outage capacities in the presence of sufficient number of users.
Cite
@article{arxiv.1105.6170,
title = {How Many Transmit Antennas to Use in a MIMO Interference Channel},
author = {Rahul Vaze},
journal= {arXiv preprint arXiv:1105.6170},
year = {2011}
}