Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On Molecular Flow Velocity Meters   Flow velocity is an important characteristic of the fluidic mediums. In this
paper, we introduce a molecular based flow velocity meter consisting of a
molecule releasing node and a receiver that counts these molecules. We consider
both flow velocity detection and estimation problems, which are employed in
different applications. For the flow velocity detection, we obtain the maximum
a posteriori (MAP) decision rule. To analyze the performance of the proposed
flow velocity detector, we obtain the error probability, its Gaussian
approximation and Chernoff information (CI) upper bound, and investigate the
optimum and sub-optimum sampling times accordingly. We show that, for binary
hypothesis, the sub-optimum sampling times using CI upper bound are the same.
Further, the sub-optimum sampling times are close to the optimum sampling
times. For the flow velocity estimation, we obtain the MAP and minimum mean
square error (MMSE) estimators. We consider the mean square error (MSE) to
investigate the error performance of the flow velocity estimators and obtain
the Bayesian Cramer-Rao (BCR) and expected Cramer-Rao (ECR) lower bounds.
Further, we obtain the optimum sampling times for each estimator. It is seen
that the optimum sampling times for each estimator are nearly the same. The
proposed flow velocity meter can be used to design a new modulation technique
in molecular communication (MC), where information is encoded in the flow
velocity of the medium instead of the concentration, type, or release time of
the molecules. The setup and performance analysis of the proposed flow velocity
detector and estimator for molecular communication system need further
investigation.

6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat