An Improved Fair Guard Band Allocation Scheme in Cognitive Networks
In this paper, an improved fair dynamic channel algorithm allocation based on guard band scheme is presented. The adoption of the channel strategy in wireless communication has been ensuring the normal communication of important systems, such as coal mine wireless emergency support entity. But future study shows that the secondary users' blocking probability is relatively higher than that of primary user in original 1D Markov states model, which is not conducive to the fairness of network access. Based on deep analysis of model parameters, this paper presents mathematical model of an improved guard channel scheme in wireless communications, simulation results show that users' access performance has been improved significantly.