Distributed Subchannel Assignment in an OFDMA Relay

Ari Hottinen; Tiina Heikkinen

2nd International ICST Conference on Performance Evaluation Methodologies and Tools

Research Article

Distributed Subchannel Assignment in an OFDMA Relay

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Cite: BibTeX Plain Text

@INPROCEEDINGS{10.4108/valuetools.2007.1968,
    author={Ari Hottinen and Tiina Heikkinen},
    title={Distributed Subchannel Assignment in an OFDMA Relay},
    proceedings={2nd International ICST Conference on Performance Evaluation Methodologies and Tools},
    proceedings_a={VALUETOOLS},
    year={2010},
    month={5},
    keywords={Relay network resource allocation noncooperative game theory OFDM},
    doi={10.4108/valuetools.2007.1968}
}

Ari Hottinen
Tiina Heikkinen
Year: 2010
Distributed Subchannel Assignment in an OFDMA Relay
VALUETOOLS
ICST
DOI: 10.4108/valuetools.2007.1968

Ari Hottinen¹^,*, Tiina Heikkinen²^,*

1: Radio Communications CTC Nokia Research Center P.O. Box 407, FIN-00045 Nokia Group, Finland
2: Department of Computer Science P.O. Box 68, FIN-00014, University of Helsinki, Finland

*Contact email: ari.hottinen@nokia.com, tiina.heikkinen@cs.helsinki.fi

Abstract

The paper studies a distributed OFDMA system in which the transmitting nodes (source and relay) have access to channel information and to some interference-related information. Distributed subchannel allocation is modelled as a noncooperative game where the players are the source nodes. Channel-aware source nodes opportunistically select their subchannels while a channel-aware relay node assigns the input subchannels at relay to appropriate output subchannels in a way that maximizes the sum of utilities in terms of signal-to-noise ratio. Numerical examples illustrate the performance of distributed subchannel assignment; opportunistic channel allocation implies a trade-off between the average capacity and fairness.

Keywords: Relay network resource allocation noncooperative game theory OFDM

Published: 2010-05-16
Modified: 2011-09-14

: http://dx.doi.org/10.4108/valuetools.2007.1968