Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Characterization and Classification of Human Body Channel as a function
  of Excitation and Termination Modalities   Human Body Communication (HBC) has recently emerged as an alternative to
radio frequency transmission for connecting devices on and in the human body
with order(s) of magnitude lower energy. The communication between these
devices can give rise to different scenarios, which can be classified as
wearable-wearable, wearable-machine, machine-machine interactions. In this
paper, for the first time, the human body channel characteristics is measured
for a wide range of such possible scenarios (14 vs. a few in previous
literature) and classified according to the form-factor of the transmitter and
receiver. The effect of excitation/termination configurations on the channel
loss is also explored, which helps explain the previously unexplained wide
variation in HBC Channel measurements. Measurement results show that
wearable-wearable interaction has the maximum loss (upto -50 dB) followed by
wearable-machine and machinemachine interaction (min loss of 0.5 dB), primarily
due to the small ground size of the wearable devices. Among the excitation
configurations, differential excitation is suitable for small channel length
whereas single ended is better for longer channel.

11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con