Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transmit Pulse Shaping for Molecular Communications   This paper presents a method for shaping the transmit pulse of a molecular
signal such that the diffusion channel's response is a sharp pulse. The impulse
response of a diffusion channel is typically characterised as having an
infinitely long transient response. This can cause severe
inter-symbol-interference, and reduce the achievable reliable bit rate. We
achieve the desired chemical channel response by poisoning the channel with a
secondary compound, such that it chemically cancels aspects of the primary
information signal. We use two independent methods to show that the chemical
concentration of the \emph{information signal} should be $\propto \delta(t)$
and that of the \emph{poison signal} should be $\propto t^{-3/2}$.

17
The categories of this paper are: q-fin
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int