Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Message-Passing Algorithms for Optimal Utilization of Cognitive Radio
  Networks   Cognitive Radio has been proposed as a key technology to significantly
improve spectrum usage in wireless networks by enabling unlicensed users to
access unused resource. We present new algorithms that are needed for the
implementation of opportunistic scheduling policies that maximize the
throughput utilization of resources by secondary users, under maximum
interference constraints imposed by existing primary users. Our approach is
based on the Belief Propagation (BP) algorithm, which is advantageous due to
its simplicity and potential for distributed implementation. We examine
convergence properties and evaluate the performance of the proposed BP
algorithms via simulations and demonstrate that the results compare favorably
with a benchmark greedy strategy.

19
The categories of this paper are: eess
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int