Secrecy Outage Analysis of Energy Harvesting Enabled Two User Cooperative NOMA
2023 5th International Conference on Recent Advances in Information Technology (RAIT)(2023)
摘要
In this paper, we evaluate the secrecy outage probability (SOP) of two user cooperative non-orthogonal multiple access (C-NOMA) network in the presence of a passive eavesdropper (E). The near user
$(U_{1})$
harvests energy from the superimposed signal transmitted by source (S). The near user
$(U_{1})$
acts as a relay and retransmits the message signal to a far user
$(U_{2})$
. The E eavesdrops the signal for
$U_{1}$
and
$U_{2}$
transmitted from
$\mathbf{S}$
and eavesdorp the signal of
$U_{2}$
relayed from
$U_{1}$
. An MRC is applied at E on two copies of signals obtained for
$U_{2}$
. An analytical framework for evaluating SOP is presented. We obtain an analytical expression for SOP of
$U_{1}$
, while an analytical expression of SOP of
$U_{2}$
at high SNR approximation is obtained. Impact of several netwrok parameters such as target secrecy rate, energy harvesting parameters on SOP is indicated. Our analytical results are supported by monte-carlo simulation carried out in MATLAB.
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关键词
Secrecy outage probability,Energy harvesting,Successive interference cancellation,NOMA
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