6th International ICST Conference on Collaborative Computing: Networking, Applications, Worksharing

Research Article

On security and reliability using cooperative transmissions in sensor networks

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  • @INPROCEEDINGS{10.4108/icst.collaboratecom.2010.59,
        author={Aylin Aksu and Prashant Krishnamurthy and David Tipper and Ozgur Ercetin},
        title={On security and reliability using cooperative transmissions in sensor networks},
        proceedings={6th International ICST Conference on Collaborative Computing: Networking, Applications, Worksharing},
        publisher={IEEE},
        proceedings_a={COLLABORATECOM},
        year={2011},
        month={5},
        keywords={Bit error rate Educational institutions Relays Transmitting antennas},
        doi={10.4108/icst.collaboratecom.2010.59}
    }
    
  • Aylin Aksu
    Prashant Krishnamurthy
    David Tipper
    Ozgur Ercetin
    Year: 2011
    On security and reliability using cooperative transmissions in sensor networks
    COLLABORATECOM
    ICST
    DOI: 10.4108/icst.collaboratecom.2010.59
Aylin Aksu1,*, Prashant Krishnamurthy1,*, David Tipper1,*, Ozgur Ercetin2,*
  • 1: School of Information Sciences, University of Pittsburgh, Pittsburgh, PA 15260
  • 2: Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul, Turkey
*Contact email: aaksu@tele.pitt.edu, prashant@tele.pitt.edu, tipper@tele.pitt.edu, oercetin@sabanciuniv.edu

Abstract

Recent work on cooperative communications has demonstrated benefits in terms of improving the reliability of links through diversity and/or increasing the reach of a link compared to a single transmitter transmitting to a single receiver (single-input single-output or SISO). In one form of cooperative transmissions, multiple nodes can act as virtual antenna elements and provide such benefits using space-time coding. In a multi-hop sensor network, a source node can make use of its neighbors as relays with itself to reach an intermediate node, which will use its neighbors and so on to reach the destination. For the same reliability of a link as SISO, the number of hops between a source and destination may be reduced using cooperative transmissions. However, the presence of malicious or compromised nodes in the network impacts the use of cooperative transmissions. Using more relays can increase the reach of a link, but if one or more relays are malicious, the transmission may fail. In this paper, we analyze this problem to understand the conditions under which cooperative transmissions may fare better or worse than SISO transmissions.