Joint back-pressure power control and interference cancellation in wireless multi-hop networks

Balasubramanian Gopalakrishnan, Nicholas D. Sidiropoulos

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Back-pressure routing and power control policies are well-appreciated for maximizing throughput in wireless multi-hop networks, where power control is used to manage interference in a way that ultimately optimizes throughput, a network-layer performance measure. In addition to transmitter power control, interference can be mitigated via selective receiver-side signal cancellation, provided that the signal to be cancelled can be reliably decoded. This paper considers joint back-pressure power control and interference cancellation, assuming that each receiver can cancel at most one interfering signal. It is shown that the joint problem is NP-hard, and a suitable convex approximation is developed and shown to yield significant gains in terms of end-to-end throughput relative to power control alone. The main methodological contribution is in terms of a fortuitous reformulation of the joint problem, which is of potentially broader interest.

Original languageEnglish (US)
Title of host publicationProceedings of the 20th European Signal Processing Conference, EUSIPCO 2012
Pages814-818
Number of pages5
StatePublished - Nov 27 2012
Event20th European Signal Processing Conference, EUSIPCO 2012 - Bucharest, Romania
Duration: Aug 27 2012Aug 31 2012

Publication series

NameEuropean Signal Processing Conference
ISSN (Print)2219-5491

Conference

Conference20th European Signal Processing Conference, EUSIPCO 2012
CountryRomania
CityBucharest
Period8/27/128/31/12

Keywords

  • Back-pressure
  • NP-hard
  • convex approximation
  • interference cancellation
  • power control

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  • Cite this

    Gopalakrishnan, B., & Sidiropoulos, N. D. (2012). Joint back-pressure power control and interference cancellation in wireless multi-hop networks. In Proceedings of the 20th European Signal Processing Conference, EUSIPCO 2012 (pp. 814-818). [6333893] (European Signal Processing Conference).