Layered Interference Networks With Delayed CSI: DoF Scaling With Distributed Transmitters

Author

Abdoli, Mohammad Javad ; Avestimehr, Amir Salman

Author_Institution

Huawei Technol. Canada Co., Ltd., Ottawa, ON, Canada

Volume

60

Issue

3

fYear

2014

fDate

41699

Firstpage

1822

Lastpage

1839

Abstract

The layered interference network is investigated with delayed channel state information (CSI) at all nodes. It is demonstrated how multihopping can be utilized to increase the achievable degrees of freedom (DoF). In particular, a multiphase transmission scheme is proposed for the K-user 2K-hop interference network to systematically exploit the layered structure of the network and delayed CSI to achieve DoF values that scale with K. This result provides the first example of a network with distributed transmitters and delayed CSI whose DoF scales with the number of users.

Keywords

radio transmitters; radiofrequency interference; wireless channels; DoF scaling; K-user 2K-hop interference network; delayed CSI; delayed channel state information; distributed transmitters; layered interference networks; layered structure; multiphase transmission scheme; Interference channels; Relays; Silicon; Spread spectrum communication; Transmitters; Upper bound; Degrees of freedom; X network; delayed CSI; interference management; multi-hop interference network; multi-phase transmission;

fLanguage

English

Journal_Title

Information Theory, IEEE Transactions on

Publisher

ieee

ISSN

0018-9448

Type

jour

DOI

10.1109/TIT.2013.2290539

Filename

6661335