Energy-and spectral-efficiency increase while constraining interference using regenerative relay

Goran Dimić, Dragana Bajić, Marko Beko

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


When using a regenerative relay, a trade-off between increasing the energy and spectral efficiency versus reducing the generated interference arises. In this paper, the generated interference in the direct link from the base station to a user terminal is compared with the generated interference from both the base station and the relay node in regenerative relay transmissions. In the space of channel losses, in the transceivers' operating region, the lines corresponding to the generated interference ratio comparing the relay scheme and the direct link are depicted. It is shown that it is possible to tune the energy-efficiency vs. generated interference trade-off, by adjusting the transmit powers, constellation size and coding rate. The trade-off depends on the channel losses along the links.

Original languageEnglish
Title of host publication2014 22nd Telecommunications Forum, TELFOR 2014 - Proceedings of Papers
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages4
ISBN (Electronic)978-1-4799-6191-7
Publication statusPublished - 2014
Event22nd Telecommunications Forum, TELFOR 2014 - Belgrade, Serbia
Duration: 25 Nov 201427 Nov 2014


Conference22nd Telecommunications Forum, TELFOR 2014


  • energy efficiency
  • hetnets
  • interference reduction
  • power control
  • regenerative relay
  • wireless


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