Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optimal Spectrum Sensing Policy with Traffic Classification in
  RF-Powered CRNs   An orthogonal frequency division multiple access (OFDMA)-based primary user
(PU) network is considered, which provides different spectral access/energy
harvesting opportunities in RF-powered cognitive radio networks (CRNs). In this
scenario, we propose an optimal spectrum sensing policy for opportunistic
spectrum access/energy harvesting under both the PU collision and energy
causality constraints. PU subchannels can have different traffic patterns and
exhibit distinct idle/busy frequencies, due to which the spectral access/energy
harvesting opportunities are application specific. Secondary user (SU) collects
traffic pattern information through observation of the PU subchannels and
classifies the idle/busy period statistics for each subchannel. Based on the
statistics, we invoke stochastic models for evaluating SU capacity by which the
energy detection threshold for spectrum sensing can be adjusted with higher
sensing accuracy. To this end, we employ the Markov decision process (MDP)
model obtained by quantizing the amount of SU battery and the duty cycle model
obtained by the ratio of average harvested energy and energy consumption rates.
We demonstrate the effectiveness of the proposed stochastic models through
comparison with the optimal one obtained from an exhaustive method.

23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio