Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Sensing-Throughput Tradeoff in Cognitive Radio With Random Arrivals and
  Departures of Multiple Primary Users   This letter analyzes the sensing-throughput tradeoff for a secondary user
(SU) under random arrivals and departures of multiple primary users (PUs). We
first study the case where PUs change their status only during SU's sensing
period. We then generalize to a case where PUs change status anytime during SU
frame, and compare the latter case with the former in terms of the optimal
sensing time and SU throughput. We also investigate the effects of PU traffic
parameters and the number of PUs on the sensing-throughput tradeoff for SU.
Results show that, though the increase in the number of PUs reduces the optimal
sensing time for SU, the opportunity to find a vacant PU channel reduces
simultaneously, in turn, reducing SU throughput. Finally, we validate the
analysis by Monte Carlo simulations.

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The categories of this paper are: astro-ph
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The categories of this paper are: adap-org
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The categories of this paper are: cmp-lg
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The categories of this paper are: patt-sol
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The categories of this paper are: gr-qc
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The categories of this paper are: funct-an
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The categories of this paper are: nucl-ex
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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-th
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The categories of this paper are: dg-ga
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The categories of this paper are: q-bio
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The categories of this paper are: stat
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The categories of this paper are: hep-ph
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The categories of this paper are: eess
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The categories of this paper are: physics
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The categories of this paper are: math-ph