Interference aggregation of cellular mobile communication network in TV white spaces

White space and spectrum holes in the TV bands bring potential opportunities to relieve the apparent spectrum scarcity. Because cellular networks are now universally deployed and propagation characteristics of the TV band are superior to those of the existing cellular bands, it is essential to consider the behavior of cellular network in the TV bands. As interference is one of most important issues we need to study in TV white space (TVWS), we investigate the behavior of aggregate interference from cellular network generated by cognitive radio (CR) in TVWS. Three models of CR cellular network are proposed in this paper. We find that the behavior of aggregate interference is mainly determined by the keep-out distance which is used to protect TV receivers from cellular networks interference and the radius of the cellular network. The numerical results can help in obtaining a conceptually and computationally improved understanding of adjacent channel interference aggregation in cellular network and guiding the deployment of cellular network in the TV bands.