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Switch Based Opportunistic Spectrum Access for General Primary User Traffic Model

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4 Author(s)
Gaaloul, F. ; Electr. Eng. Program, King Abdullah Univ. of Sci. & Technol. (KAUST), Thuwal, Saudi Arabia ; Hong-Chuan Yang ; Radaydeh, R.M. ; Alouini, M.-S.

This letter studies cognitive radio transceiver that can opportunistically use the available channels of primary user (PU). Specifically, we investigate and compare two different opportunistic channel access schemes. The first scheme applies when the secondary user (SU) has access to only one channel. The second scheme, based on channel switching mechanism, applies when the SU has access to multiple channels but can at a given time monitor and access only one channel. For these access schemes, we derive the exact analytical results for the novel performance metrics of average access time and average waiting time under general PU traffic models.

Published in:

Wireless Communications Letters, IEEE  (Volume:1 ,  Issue: 5 )

Date of Publication:

October 2012

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