Transmission schemes for gaussian interference channels with transmitter processing energy

Xi Liu, Elza Erkip

Research output: Contribution to journalArticlepeer-review

Abstract

This work considers communication over Gaussian interference channels with processing energy cost, which explicitly takes into account the energy expended for processing when transmitters are on. In the presence of processing energy cost, transmitting all the time as in the conventional no-cost case is no longer optimal. For a two-user Gaussian interference channel with processing energy cost, assuming that the on-off states of transmitters are not utilized for signaling, several transmission schemes with varying complexities are proposed and their sum-rates are compared with an interference-free upper bound. Moreover, the very strong interference regime, under which interference does not incur any rate penalty, is identified and shown to be larger than the case of no processing energy cost for certain scenarios of interest. Also, extensions to a three-user cascade Gaussian Z interference channel with processing energy cost are provided, where scheduling of user transmissions based on the channel set-up is investigated.

Original languageEnglish (US)
Article number6575088
Pages (from-to)4756-4765
Number of pages10
JournalIEEE Transactions on Wireless Communications
Volume12
Issue number9
DOIs
StatePublished - 2013

Keywords

  • Processing energy
  • bursty transmission
  • interference channel

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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