Outage probability of C-NOMA in relaying network with D2D communication pair
Abstract
This paper considers a cooperative Non-Orthogonal Multiple Access (C-NOMA) network with multiple relays and destination user underlay interference constraints from device-to-device (D2D) users. The selected relay improves the decoding capacity from the base station to multi-users over block Rayleigh fading channels. Three relay selection schemes are proposed, such as the partial relay selection scheme for the first hop (RSFH) and second hop (RSSH) and the maximized decoding capacity by the two-stage relay selection (TSRS). To consider the outage performance of the proposed system, the derivations of the analytical expressions for both relay selection schemes for all destination users are provided, and Monte Carlo Simulations are used to confirm the accuracy of these mathematical analyses. Finally, the effects of system essential parameters such as the number of DF-relay nodes, the fixed-power allocation, perfect/imperfect successive interference cancellation (SIC), and the strength of interference from a D2D pair in various scenarios are investigated.
Published
2024-12-28
Section
Regular articles
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