Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Threshold-based Selective Cooperative-NOMA   In this letter, we propose threshold-based selective cooperative-NOMA
(TBS-C-NOMA) to increase the data reliability of conventional cooperative-NOMA
(C-NOMA) networks. In TBS-C-NOMA, the intra-cell user forwards the symbols of
cell-edge user after successive interference canceler (SIC) only if the
signal-to-interference plus noise ratio (SINR) is greater than the
pre-determined threshold value. Hence, the data reliability of the cell-edge
user is increased by eliminating the effect of the error propagation. We derive
closed-form end-to-end exact bit error probability (BEP) of proposed system for
various modulation constellations. Then, the optimum threshold value is
analyzed in order to minimize BEP. The obtained expressions are validated via
simulations and it is revealed that TBS-C-NOMA outperforms C-NOMA and full
diversity order is achieved.

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The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio