Fig. 8From: Spectrum sharing via hybrid cognitive players evaluated by an M/D/1 queuing modelThe two players’ normalized utilities versus the number of secondary users with n p = 2, λ p = 10 kbps, λ s = 1 kbps, and μ = 100 kbps and three cost functions with C 1, C 2, and C 3 defined by Eqs. 11, 22, and 23, respectivelyBack to article page