Fountain codes for frequency occupancy information dissemination

X. Shao, H.S. Cronie, F.W. Hoeksema, Cornelis H. Slump

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

    11 Citations (Scopus)

    Abstract

    Cognitive radio (CR) is defined as an intelligent wireless communication system based on secondary utilization of an already licensed frequency band. In order to communicate without interfering the legal users (primary users), cognitive radio nodes should have the same overview of the spectrum occupancy information. In other words, each cognitive radio node should disseminate frequency occupancy information (FOI) to other CR nodes reliably after sensing the environment. Normally, people employ retransmission protocols to communicate reliably. This leads to redundancy in reliable dissemination, especially in a multicasting or broadcasting situation. However, the application of fountain codes could make reliable dissemination possible without too much redundancy. A fountain-code based approach is more efficient than using retransmission protocols for disseminating large-sized file. In the paper we show this is also the case when applying fountain codes in disseminating a small FOI file (e.g. a binary vector originating from a 512 points FFT). Fountain codes only work optimally in an erasure channel. In the paper we show the utilization of error-correcting codes to convert a noisy channel into an erasure channel.
    Original languageUndefined
    Title of host publication17th Annual Workshop on Circuits
    Place of PublicationUtrecht
    PublisherSTW
    Pages196-203
    Number of pages8
    ISBN (Print)978-90-73461-44-4
    Publication statusPublished - 23 Nov 2006
    Event17th Annual Workshop on Circuits, Systems and Signal Processing, ProRISC 2006 - Veldhoven, Netherlands
    Duration: 23 Nov 200624 Nov 2006
    Conference number: 17

    Publication series

    Name
    PublisherSTW
    NumberTechnical

    Workshop

    Workshop17th Annual Workshop on Circuits, Systems and Signal Processing, ProRISC 2006
    Abbreviated titleProRISC 2006
    CountryNetherlands
    CityVeldhoven
    Period23/11/0624/11/06

    Keywords

    • EWI-8915
    • METIS-237864
    • IR-63882

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