Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Distributed Wideband Spatio-Spectral Sensing for Unlicensed Massive IoT
  Communications   In this paper, we propose a dynamic spectrum sensing-based architecture to
provide connectivity for a massive number of Internet-of-things (IoT) objects
over the unlicensed spectrum. Specifically, the architecture relies on
deploying sensing access points (SAPs), e.g., small cells with sensing
capabilities, that aim to (i) identify a large number of narrowband channels in
a wideband spectrum, as many massive IoT applications have low-rate
requirements, and (ii) aggressively reuse the unlicensed channels at the SAPs'
locations as IoT devices typically transmit at low power, occupying a small
spatial footprint. Instead of enforcing each SAP to sense the entire spectrum,
we develop a sensing assignment scheduler that ensures each one senses a subset
of the spectrum. We then develop a distributed spatio-spectral cooperative
sensing algorithm that enables each SAP to have local information about the
occupancy of the entire spectrum. We present numerical simulations to validate
the effectiveness of the proposed system in the presence of WiFi access points
(APs). It is shown that the proposed system outperforms non-cooperative and
centralized schemes in terms of reliably identifying more available
spatio-spectral blocks with a lower misdetection of transmitting WiFi APs.

27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th