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

Hanan Al-Tous; Imad Barhumi

doi:10.1109/JIEEEC.2017.8051418

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

Hanan Al-Tous, Imad Barhumi

Department of Electrical and Communication Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	2017 10th Jordan International Electrical and Electronics Engineering Conference, JIEEEC 2017
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781538618363
DOIs	https://doi.org/10.1109/JIEEEC.2017.8051418
Publication status	Published - Sept 26 2017
Event	10th Jordan International Electrical and Electronics Engineering Conference, JIEEEC 2017 - Amman, Jordan Duration: May 16 2017 → May 17 2017

Other

Other	10th Jordan International Electrical and Electronics Engineering Conference, JIEEEC 2017
Country/Territory	Jordan
City	Amman
Period	5/16/17 → 5/17/17

Keywords

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

ASJC Scopus subject areas

Computer Networks and Communications
Electrical and Electronic Engineering

Access to Document

10.1109/JIEEEC.2017.8051418

Cite this

Al-Tous, H & Barhumi, I 2017, A low complexity algorithm for mode-selection of OFDM relaying systems. in 2017 10th Jordan International Electrical and Electronics Engineering Conference, JIEEEC 2017., 8051418, Institute of Electrical and Electronics Engineers Inc., 10th Jordan International Electrical and Electronics Engineering Conference, JIEEEC 2017, Amman, Jordan, 5/16/17. https://doi.org/10.1109/JIEEEC.2017.8051418

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AB - 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.

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

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Keywords

ASJC Scopus subject areas

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