Degrees-of-freedom of the K-user MISO interference channel with delayed local CSIT

Chenxi Hao; Bruno Clerckx

doi:10.1109/ICC.2015.7248985

Degrees-of-freedom of the K-user MISO interference channel with delayed local CSIT

Chenxi Hao, Bruno Clerckx

School of Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

12 Citations (Scopus)

Abstract

This paper considers a K-user Multiple-Input-Single-Output (MISO) Interference Channel (IC), where the channel state information obtained by the transmitters (CSIT) is perfect, but completely outdated. A Retrospective Interference Alignment (RIA) using such delayed CSIT was proposed by Maddah-Ali et. al for the MISO Broadcast Channel (BC), but the extension to the MISO IC is a non-trivial step as each transmitter only has the message intended for the corresponding user. Recently, Abdoli et.al focused on a Single-Input-Single-Output (SISO) IC and solved such bottleneck by inventing a distributed higher order symbol generation. Our main work is to extend Abdoli's work to the MISO case by integrating some features of Maddah-Ali's scheme. The achieved sum Degrees-of-Freedom (DoF) performance is asymptotically given by 64/15 when K→∞, outperforming all the previously known results.

Original language	English
Title of host publication	2015 IEEE International Conference on Communications, ICC 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	4217-4222
Number of pages	6
ISBN (Electronic)	9781467364324
DOIs	https://doi.org/10.1109/ICC.2015.7248985
Publication status	Published - 2015 Sept 9
Event	IEEE International Conference on Communications, ICC 2015 - London, United Kingdom Duration: 2015 Jun 8 → 2015 Jun 12

Publication series

Name	IEEE International Conference on Communications
Volume	2015-September
ISSN (Print)	1550-3607

Other

Other	IEEE International Conference on Communications, ICC 2015
Country/Territory	United Kingdom
City	London
Period	15/6/8 → 15/6/12

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

ASJC Scopus subject areas

Electrical and Electronic Engineering
Computer Networks and Communications

Access to Document

10.1109/ICC.2015.7248985

Cite this

Hao, C., & Clerckx, B. (2015). Degrees-of-freedom of the K-user MISO interference channel with delayed local CSIT. In 2015 IEEE International Conference on Communications, ICC 2015 (pp. 4217-4222). Article 7248985 (IEEE International Conference on Communications; Vol. 2015-September). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICC.2015.7248985

Degrees-of-freedom of the K-user MISO interference channel with delayed local CSIT. / Hao, Chenxi; Clerckx, Bruno.
2015 IEEE International Conference on Communications, ICC 2015. Institute of Electrical and Electronics Engineers Inc., 2015. p. 4217-4222 7248985 (IEEE International Conference on Communications; Vol. 2015-September).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Hao, C & Clerckx, B 2015, Degrees-of-freedom of the K-user MISO interference channel with delayed local CSIT. in 2015 IEEE International Conference on Communications, ICC 2015., 7248985, IEEE International Conference on Communications, vol. 2015-September, Institute of Electrical and Electronics Engineers Inc., pp. 4217-4222, IEEE International Conference on Communications, ICC 2015, London, United Kingdom, 15/6/8. https://doi.org/10.1109/ICC.2015.7248985

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Degrees-of-freedom of the K-user MISO interference channel with delayed local CSIT

Abstract

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