Globally optimal tin strategies with time-sharing in the MISO interference channel

Christoph Hellings, Bho Matthiesen, Eduard A. Jorswieck, Wolfgang Utschick

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

The capacity region of the two-user multiple-input single-output (MISO) interference channel is an open problem, and various achievable rate regions have been discussed in the literature. In this paper, we assume that the transmit signals are Gaussian and that the receivers treat interference as noise (TIN), i.e., we focus on the TIN rate region with Gaussian inputs. Our aim is to compute the rate region boundary for the case of proper Gaussian signaling with time-sharing, i.e., the data rates and required transmit powers may be averaged over several transmit strategies. To this end, we apply methods from convex optimization (in particular Lagrange duality and the cutting plane algorithm), and propose the novel mixed monotonic programming (MMP) framework to treat the arising nonconvex subproblems. The obtained TIN rate region with proper Gaussian signals and time-sharing is significantly larger than previously computed TIN rate regions with proper Gaussian signals, and can even outperform TIN strategies with improper signaling.

Original languageEnglish
Title of host publicationEUSIPCO 2019 - 27th European Signal Processing Conference
PublisherEuropean Signal Processing Conference, EUSIPCO
ISBN (Electronic)9789082797039
DOIs
StatePublished - Sep 2019
Event27th European Signal Processing Conference, EUSIPCO 2019 - A Coruna, Spain
Duration: 2 Sep 20196 Sep 2019

Publication series

NameEuropean Signal Processing Conference
Volume2019-September
ISSN (Print)2219-5491

Conference

Conference27th European Signal Processing Conference, EUSIPCO 2019
Country/TerritorySpain
CityA Coruna
Period2/09/196/09/19

Keywords

  • Improper signaling
  • Interference channel
  • Lagrange duality
  • Monotonic optimization
  • Time-sharing

Fingerprint

Dive into the research topics of 'Globally optimal tin strategies with time-sharing in the MISO interference channel'. Together they form a unique fingerprint.

Cite this