A low complexity algorithm for mode-selection of OFDM relaying systems

Hanan Al-Tous, Imad Barhumi

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

Abstract

A low complexity algorithm is proposed for joint allocation of power profiles at the source and relay nodes and subcarrier mode-selection for a single user relay aided orthogonal frequency division multiplexing (OFDM) cooperative communication system. Two scenarios are addressed in this work, in the first scenario, the relay uses DF cooperative relaying to transmit data on a set of available subcarriers, and the remaining subcarriers are used for direct transmission. In the second scenario, the relay uses AF with diversity on a set of available subcarriers, and the remaining subcarriers are used for DF with diversity. The objective is to allocate the resources to maximize the data rate over one OFDM symbol subject to either individual power constraint on each node or total power constraint. We formulate such a problem as subcarrier based resource allocation that seeks joint optimization of subcarrier mode-selection and power profiles at the source and relay nodes. The algorithm is based on an ordering of the channel gains ratio and splitting them into two partitions. The partition that maximizes the OFDM symbol rate is sought. Simulation results demonstrate the merit of the proposed algorithm.

Original languageEnglish
Title of host publication2017 10th Jordan International Electrical and Electronics Engineering Conference, JIEEEC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538618363
DOIs
Publication statusPublished - Sep 26 2017
Event10th Jordan International Electrical and Electronics Engineering Conference, JIEEEC 2017 - Amman, Jordan
Duration: May 16 2017May 17 2017

Other

Other10th Jordan International Electrical and Electronics Engineering Conference, JIEEEC 2017
Country/TerritoryJordan
CityAmman
Period5/16/175/17/17

Keywords

  • data rate
  • DF/AF cooperative communications
  • mode-selection
  • OFDM
  • resource allocation

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'A low complexity algorithm for mode-selection of OFDM relaying systems'. Together they form a unique fingerprint.

Cite this