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Outage Analysis in SWIPT Enabled Cooperative AF/DF Relay Assisted Two-Way Spectrum Sharing Communication

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posted on 2021-09-24, 19:18 authored by Sutanu GhoshSutanu Ghosh, Tamaghna Acharya, Santi P. Maity
This paper reports relative performance of decode-and-forward (DF) and amplify-and-forward (AF) relaying
in a multi-antenna cooperative cognitive radio network (CCRN) that supports device-to-device (D2D) communications
using spectrum sharing technique in cellular network. In this work, cellular system is considered as primary
and internet of things devices (IoDs), engaged in D2D communications, are considered to be secondary system.
The devices access the licensed spectrum by means of the cooperation in two-way primary communications.
Furthermore, IoDs are energized by harvesting the energy from radio frequency (RF) signals, using simultaneous
wireless information and power transfer (SWIPT) protocol. Closed form expressions of outage probability for
both cellular and D2D communications are derived and the impact of various design parameters for both AF
and DF relaying techniques are studied. Based on the simulation results, it is found that the proposed spectrum
sharing protocol, for both DF relaying and AF relaying schemes, outperform another similar network architecture
in terms of spectrum efficiency. It is also observed that the performance of the proposed system using DF relaying
is better than AF relaying scheme in terms of energy efficiency at same transmit power




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