Author(s)

Zeyu Yang, Zunwen He

Corresponding Author

Zeyu Yang

Abstract

This paper analyzes the interference process of secondary users in 5G cognitive radio networks with large-scale cells, the secondary users reuse the primary users’ spectrum resources, and the networks with primary and secondary system are considered. The primary system is the spectrum sharing networks base on the wireless protocol, the primary users are uniformly distributed, while the secondary users distributed as clusters in the networks. Then, a series of technologies are adopted into the networks for the system-level simulation, which includes modulation scheme selection, hybrid automatic repeat request, power control, and so on. Then, based on the interference process scheme and secondary user relay technology, the system performance is further enhanced. This paper also analyzes the networks based on a macro view of the system and a micro view of the link. In addition, different cluster distances are considered in the simulation, which demonstrates the system performance, is not only impacted by the relay and the interference, but also by the distribution of the secondary users.

Keywords

5G cognitive radio networks, Secondary network, System level simulation, Spectrum reuse, Interference process.