Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Adaptive Rate NOMA for Cellular IoT Networks   Internet-of-Things (IoT) technology is envisioned to enable a variety of
real-time applications by interconnecting billions of sensors/devices deployed
to observe some random physical processes. These IoT devices rely on low-power
wide-area wireless connectivity for transmitting, mostly fixed- but small-size,
status updates of their associated random processes. The cellular networks are
seen as a natural candidate for providing reliable wireless connectivity to IoT
devices. However, the conventional orthogonal multiple access (OMA) to these
massive number of devices is expected to degrade the spectral efficiency. As a
promising alternative to OMA, the cellular base stations (BSs) can employ
non-orthogonal multiple access (NOMA) for the uplink transmissions of mobile
users and IoT devices. In particular, the uplink NOMA can be configured such
that the mobile user can adapt transmission rate based on its channel condition
while the IoT device transmits at a fixed rate. For this setting, we analyze
the ergodic capacity of mobile users and the mean local delay of IoT devices
using stochastic geometry. Our analysis demonstrates that the above NOMA
configuration can provide better ergodic capacity for mobile users compare to
OMA when IoT devices' delay constraint is strict. Furthermore, we also show
that NOMA can support a larger packet size for IoT devices than OMA under the
same delay constraint.

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The categories of this paper are: nlin
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The categories of this paper are: atom-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-th
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The categories of this paper are: bayes-an
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The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: math-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: funct-an
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The categories of this paper are: cmp-lg