Figure 4From: A utility-based approach for secondary spectrum sharingPerformance of the gradient ascent-based methods against Leith-Clifford and Gibbs for different densities of 30 nodes. C = 11 channels are considered. The "centralized", "local", and "global" versions of the proposed algorithm are represented by the top curve and their performances are hardly distinguishable. 95% confidence intervals are also displayed.Back to article page