Layered Interference Networks with Delayed CSI: DoF Scaling with Distributed Transmitters
Information Theory
2013-11-05 v2 math.IT
Abstract
The layered interference network is investigated with delayed channel state information (CSI) at all nodes. It is demonstrated how multi-hopping can be utilized to increase the achievable degrees of freedom (DoF). In particular, a multi-phase transmission scheme is proposed for the -user -hop interference network in order to systematically exploit the layered structure of the network and delayed CSI to achieve DoF values that scale with . This result provides the first example of a network with distributed transmitters and delayed CSI whose DoF scales with the number of users.
Cite
@article{arxiv.1302.4788,
title = {Layered Interference Networks with Delayed CSI: DoF Scaling with Distributed Transmitters},
author = {Mohammad Javad Abdoli and A. Salman Avestimehr},
journal= {arXiv preprint arXiv:1302.4788},
year = {2013}
}
Comments
32 pages, 6 figures, 4 tables; Accepted for publication in IEEE Transactions on Information Theory