Cognitive Wireless Network with Cooperative and Selfish Nodes

Abstract

In this paper we report on our fundamental results and new work on building cognitive wireless networks that complete resource sharing in a local environment. We emphasize two fundamentals issues. First, a cognitive network with full cooperative nodes. Second, the cooperative and not cooperative behavior of selfish users in our network. The cooperative behavior among the radios is regularly believed to require a rich exchange of information. We show in this work that cooperation can be an emergent phenomenon with a considerable costs. We apply Coalitional Games to cognitive wireless networks to show that coalitional attitude both in sensing and transmission data can give a very good gain. The impacting factors of achievable cooperative gain is mathematically calculated, also incurred cooperation overhead are presented. A simulation proof of the two issues conclude our paper.