GE Yuming, SUN Yi, LU Shan and Eryk Dutkiewicz. A Distributed Decision Making Method inCognitive Radio Networks for SpectrumManagement[J]. Chinese Journal of Electronics, 2010, 19(2): 195-200.
Citation: GE Yuming, SUN Yi, LU Shan and Eryk Dutkiewicz. A Distributed Decision Making Method inCognitive Radio Networks for SpectrumManagement[J]. Chinese Journal of Electronics, 2010, 19(2): 195-200.

A Distributed Decision Making Method inCognitive Radio Networks for SpectrumManagement

  • Received Date: 2009-08-16
  • Rev Recd Date: 2009-11-01
  • Publish Date: 2010-04-05
  • In order to make full utilization of the
    scarce spectrum resources for Cognitive radio networks,
    secondary users are expected to exploit the available spec-
    trum of primary users. However, when there are several
    spectrum bands available, how to select an appropriate one
    for the secondary user according to the spectrum quality
    and the QoS requirements of di®erent kinds of applications
    is a new challenge. In this paper, we propose a new Au-
    tomatic distributed spectrum decision (ADSD) method to
    solve this problem. ADSD considers multiple spectrum
    characterization parameters, in particular, the primary
    users' arrival probability, to estimate the quality of the
    available spectrum bands. A weight auto-generation mech-
    anism is included to automatically determine the weights
    of di®erent parameters, thus avoiding the di±culty and ir-
    rationality when relying on the users to specify the weights
    directly. In addition, in conjunction with the recon¯g-
    uration mechanism, ADSD can reduce the rate of spec-
    trum hando®s by recon¯guring the transmission parame-
    ters rather than making a new decision for the existing
    transmission. Simulation results show that without any
    users' interference, ADSD can automatically select the ap-
    propriate spectrum for transmission and signi¯cantly im-
    prove the Cognitive Radio network performance in terms
    of throughput and the spectrum hando® rate.
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