Figure 3
The two graphs are labelled a and b, showing relay outage probability on a logarithmic vertical axis versus signal-to-noise ratio in decibels on the horizontal axis, ranging from zero to thirty-five. Each plot includes curves for Proposed Exact, Proposed Asymptotic, Existing Exact, High C N O M A S T B C, C N O M A S T B C, and EH C N O M A with I equal to one. The outage probability decreases from approximately ten to the power zero at a low signal-to-noise ratio to approximately ten to the power minus four at a higher signal-to-noise ratio. All curves exhibit a monotonic decreasing trend as the signal-to-noise ratio increases in both subfigures.OP of the relay versus SNR