Characterization of multi-channel interference

O. Durmaz, P.G. Jansen

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    6 Citations (Scopus)
    204 Downloads (Pure)

    Abstract

    Multi-channel communication protocols in wireless networks usually assume perfect orthogonality between wireless channels or consider only the use of interference-free channels. The first approach may overestimate the performance whereas the second approach may fail to utilize the spectrum efficiently. Therefore, a more realistic approach would be the careful use of interfering channels by controlling the interference at an acceptable level. We present a methodology to estimate the packet error rate (PER) due to inter-channel interference in a wireless network. The methodology experimentally characterizes the multi-channel interference and analytically estimates it based on the observations from the experiments. Furthermore, the analytical estimation is used in simulations to derive estimates of the capacity in larger networks. Simulation results show that the achievable network capacity, which is defined as the number of simultaneous transmissions, significantly increases with realistic interfering channels compared with the use of only orthogonal channels. When we consider the same number of channels, the achievable capacity with realistic interfering channels can be close to the capacity of idealistic orthogonal channels. This shows that overlapping channels which constitute a much smaller band, provides more efficient use of the spectrum. Finally, we explore the correctness of channel orthogonality and show why this assumption may fail in a practical setting.
    Original languageEnglish
    Title of host publication6th International Symposium on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks and workshops, 2008
    Subtitle of host publicationWiOPT 2008, Berlin, Germany, 1-3 April 2008
    Place of PublicationPiscataway, NJ
    PublisherIEEE Computer Society Press
    Pages429-435
    Number of pages7
    ISBN (Print)978-963-9799-18-9
    DOIs
    Publication statusPublished - 1 Aug 2008
    Event6th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOPT 2008 - Berlin, Germany
    Duration: 1 Apr 20083 Apr 2008
    Conference number: 6

    Conference

    Conference6th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOPT 2008
    Abbreviated titleWiOPT
    CountryGermany
    CityBerlin
    Period1/04/083/04/08

    Keywords

    • EWI-13509
    • IR-65003
    • METIS-251200

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