A probabilistic model of spectrum availability for OFDMA based cognitive radio systems

Nariman Rahimian; Hasari Celebi; Costas N. Georghiades; Khalid A. Qaraqe

doi:10.1109/LCOMM.2012.091712.121462

A probabilistic model of spectrum availability for OFDMA based cognitive radio systems

Nariman Rahimian^*, Hasari Celebi, Costas N. Georghiades, Khalid A. Qaraqe

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

In this paper, the demands made by a set of spatially Poisson point distributed primary users on available channels in their proximity is considered and their effect on channel availability for secondary users under various channel requesting distributions is assessed. It is shown that for some "greedy" systems, providing more subcarriers will not increase the spectrum availability for a secondary network. The sustainable traffic of the system subject to a fixed spectrum outage probability is also investigated. It is shown that for a fixed spectrum outage probability, as long as the system is "greedy", providing more subcarriers does not help to support more primary users to successfully avoid spectrum outage.

Original language	English
Article number	6313577
Pages (from-to)	1780-1783
Number of pages	4
Journal	IEEE Communications Letters
Volume	16
Issue number	11
DOIs	https://doi.org/10.1109/LCOMM.2012.091712.121462
Publication status	Published - 2012
Externally published	Yes

Keywords

Cognitive radio
OFDMA
probabilistic model
spectrum availability

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10.1109/LCOMM.2012.091712.121462

Cite this

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keywords = "Cognitive radio, OFDMA, probabilistic model, spectrum availability",

author = "Nariman Rahimian and Hasari Celebi and Georghiades, {Costas N.} and Qaraqe, {Khalid A.}",

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AU - Rahimian, Nariman

AU - Celebi, Hasari

AU - Georghiades, Costas N.

AU - Qaraqe, Khalid A.

PY - 2012

Y1 - 2012

N2 - In this paper, the demands made by a set of spatially Poisson point distributed primary users on available channels in their proximity is considered and their effect on channel availability for secondary users under various channel requesting distributions is assessed. It is shown that for some "greedy" systems, providing more subcarriers will not increase the spectrum availability for a secondary network. The sustainable traffic of the system subject to a fixed spectrum outage probability is also investigated. It is shown that for a fixed spectrum outage probability, as long as the system is "greedy", providing more subcarriers does not help to support more primary users to successfully avoid spectrum outage.

AB - In this paper, the demands made by a set of spatially Poisson point distributed primary users on available channels in their proximity is considered and their effect on channel availability for secondary users under various channel requesting distributions is assessed. It is shown that for some "greedy" systems, providing more subcarriers will not increase the spectrum availability for a secondary network. The sustainable traffic of the system subject to a fixed spectrum outage probability is also investigated. It is shown that for a fixed spectrum outage probability, as long as the system is "greedy", providing more subcarriers does not help to support more primary users to successfully avoid spectrum outage.

KW - Cognitive radio

KW - OFDMA

KW - probabilistic model

KW - spectrum availability

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M3 - Article

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VL - 16

SP - 1780

EP - 1783

JO - IEEE Communications Letters

JF - IEEE Communications Letters

IS - 11

M1 - 6313577

ER -

A probabilistic model of spectrum availability for OFDMA based cognitive radio systems

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Keywords

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