Transmission capacity analysis of relay-assisted D2D cellular networks with interference cancellation

摘要

D2D communication has been identified as one of the technologies for meeting the unique traffic demands of the fifth-generation wireless network communication. However, the effectiveness of D2D highly depends on the proximity of devices. In other words, whenever such devices are very far apart, communication may become ineffective. Thus, relay assisted D2D positions itself as an approach by which some of the limitations of traditional D2D communication can be addressed. This makes the applications of D2D communication more versatile. However, the introduction of relays also poses interference within the D2D communication network especially when the density of relay is high. Such scenarios call for techniques by which interference posed by relays can be averted while taking the benefits of relay-assisted communication. This motivates the consideration of interference cancellation (IC) in this paper where two IC models are adapted into the transmission capacity analysis of relay-assisted D2D communication. We show the performance gains attainable by interference cancellation and how the interplay between its parameters affect the network performance. Furthermore, two hybrid IC models are investigated and the impact of interference cancellation in these scenarios and the inherent trade-offs are revealed.