Power optimization for layered transmission over decode-And-forward relay channels

Mohamed Adel Attia, Mohammad Shaqfeh, Karim Seddik, Hussein Alnuweiri

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

7 Citations (Scopus)

Abstract

In this paper, we consider a fading relay channel where the source uses two layers source coding with successive refinement. The two source layers are transmitted using superposition coding at the source and relay with optimal power allocation, and successive interference cancellation at the receivers (i.e. relay and destination). The power allocation for the two layers at the source and relay is subject to optimization in order to maximize the expected user satisfaction that is defined by a utility function of the total decoded rates at the destination. We assume that only the channel statistics are known. The relay is half-duplex and applies decode and forward. We characterize the expected utility function in terms of the channel statistics of the fading channels, and we solve the optimization problem using the numerical random search method. We provide many numerical examples to show the prospected gains of using the relay on the expected utility for different channel conditions. Furthermore, we obtain that for some conditions, it is optimal to send only one layer.

Original languageEnglish
Title of host publicationIWCMC 2014 - 10th International Wireless Communications and Mobile Computing Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages594-599
Number of pages6
ISBN (Electronic)9781479909599
DOIs
Publication statusPublished - 22 Sep 2014
Event10th International Wireless Communications and Mobile Computing Conference, IWCMC 2014 - Nicosia, Cyprus
Duration: 4 Aug 20148 Aug 2014

Other

Other10th International Wireless Communications and Mobile Computing Conference, IWCMC 2014
CountryCyprus
CityNicosia
Period4/8/148/8/14

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Keywords

  • Broadcast approach
  • multilayer transmission
  • relay channel
  • selection relaying decode-And-forward
  • utility maximization

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Computer Networks and Communications

Cite this

Attia, M. A., Shaqfeh, M., Seddik, K., & Alnuweiri, H. (2014). Power optimization for layered transmission over decode-And-forward relay channels. In IWCMC 2014 - 10th International Wireless Communications and Mobile Computing Conference (pp. 594-599). [6906423] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IWCMC.2014.6906423