Dynamic Spectrum Access Using Markov Chain Technique for Regional area Network.

Jayant P Pawar

Abstract


Cognitive Radio Network is the effective solution to the spectrum scarcity.  Dynamic spectrum access is a paradigm used to access the spectrum dynamically. A Markov Chain is a stochastic model describing a sequence of possible events in which probability of each event depends only on the state attained in the previous event. We model the dynamics of cognitive user with 2-D Markov chain. The resource distribution probability (RDP) verses addition/ elimination rate of the channels in the network is also plotted. The RDP verses utilization factor of the queue, which is the secondary user in the network, is also plotted. This plot helps to maintain the total arrival and departure rate based on the RDP. The base station of the network will use this relation to maintain the proper RDP for the devices. The dynamics of each cognitive user and its correlation with Markov Chain is an interesting approach. Here we considered the DSA at Base Station as a Markov chain and analyzed it. This analysis help us to determine the behavior of the cognitive radio. The channel grouping is suggested in this work and plotted the trinomial distribution of the quality of the channels available in the network.


Keywords


Cognitive Radio Network, Dynamic Spectrum Access, Markov Chain, Regional Area Network, utilization factor

References


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DOI: http://doi.org/10.11591/ijeecs.v19.i2.pp%25p
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