38 16 17 18 19 20 21 22 23 24 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Outage threshold [dB] Outage Probability Greedy; U=100 Proportional Fair; U=100 Round Robin; U=100 Greedy; U=50 Proportional Fair; U=50 Round Robin; U=50 Monte−Carlo Simulations Fig. 7. Impact of different scheduling schemes on the network outage probability for different number of users and various outage thresholds, β =2.6, χ ∼ Gamma(3 / 2 , 2 / 3) , C =60 dB, P max =1W, σ $^{2}$=-174 dBm/Hz.