3rd International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications

Research Article

Accumulative Interference Modeling for Cognitive Radios with Distributed Channel Access

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  • @INPROCEEDINGS{10.1109/CROWNCOM.2008.4562479,
    author={Michael Timmers and Antoine Dejonghe and Ahmad Bahai and Sofie Pollin and Liesbet Van der Perre and Francky Catthoor},
    title={Accumulative Interference Modeling for Cognitive Radios with Distributed Channel Access},
    proceedings={3rd International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications},
    publisher={IEEE},
    proceedings_a={CROWNCOM},
    year={2008},
    month={7},
    keywords={},
    doi={10.1109/CROWNCOM.2008.4562479}
}
  • Michael Timmers
    Antoine Dejonghe
    Ahmad Bahai
    Sofie Pollin
    Liesbet Van der Perre
    Francky Catthoor
    Year: 2008
    Accumulative Interference Modeling for Cognitive Radios with Distributed Channel Access
    CROWNCOM
    IEEE
    DOI: 10.1109/CROWNCOM.2008.4562479
Michael Timmers1,*, Antoine Dejonghe2,*, Ahmad Bahai3,*, Sofie Pollin4, Liesbet Van der Perre1, Francky Catthoor1
  • 1: Interuniversity Micro-Electronics Center (IMEC), Kapeldreef 75, B-3001 Leuven, Belgium Katholieke Universiteit Leuven, Kasteelpark Arenberg 10, B-3001 Leuven, Belgium
  • 2: Interuniversity Micro-Electronics Center (IMEC), Kapeldreef 75, B-3001 Leuven, Belgium
  • 3: UC Berkeley, 264M Cory Hall, Berkeley, CA 94720, USA
  • 4: Interuniversity Micro-Electronics Center (IMEC), Kapeldreef 75, B-3001 Leuven, Belgium UC Berkeley, 264M Cory Hall, Berkeley, CA 94720, USA
*Contact email: michael.timmers@imec.be, dejonghe@imec.be, ahmad.bahai@nsc.com

Abstract

A Cognitive Radio (CR) network should be able to sense its environment and adapt its communication to utilize unused licensed spectrum without interfering with incumbents. Properly modeling the expected interference from the CR network is therefore very important in the definition of coexistence rules to efficiently protect the incumbents. In this paper we model the accumulative interference generated from a largescale CR network and investigate how this affects the sensing requirements of the CRs to meet an interference constraint. More specifically, our model considers the impact of discrete topology and the impact of the distributed channel access scheme. As an instantiation of our model, we consider a CR network based on the IEEE 802.11 standard. We show that the interference generated is large, since collisions cannot be avoided.

Published
2008-07-15
Publisher
IEEE
Modified
2010-05-16
http://dx.doi.org/10.1109/CROWNCOM.2008.4562479
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