Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optimization of the Belief-Propagation Algorithm for Distributed
  Detection by Linear Data-Fusion Techniques   In this paper, we investigate distributed inference schemes, over
binary-valued Markov random fields, which are realized by the belief
propagation (BP) algorithm. We first show that a decision variable obtained by
the BP algorithm in a network of distributed agents can be approximated by a
linear fusion of all the local log-likelihood ratios. The proposed approach
clarifies how the BP algorithm works, simplifies the statistical analysis of
its behavior, and enables us to develop a performance optimization framework
for the BP-based distributed inference systems. Next, we propose a blind
learning-adaptation scheme to optimize the system performance when there is no
information available a priori describing the statistical behavior of the
wireless environment concerned. In addition, we propose a blind threshold
adaptation method to guarantee a certain performance level in a BP-based
distributed detection system. To clarify the points discussed, we design a
novel linear-BP-based distributed spectrum sensing scheme for cognitive radio
networks and illustrate the performance improvement obtained, over an existing
BP-based detection method, via computer simulations.

33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys