CR Enabled TD-LTE within TV White Space: System Level Performance Analysis
Junfeng Xiao, Ye Feng, Tingjian Tian, Rose Qingyang Hu · 2011
Cognitive Radio has emerged as a new technology to improve spectrum utilization and to alleviate spectrum scarcity by allowing unlicensed users to sense and opportunistically access the under-utilized spectrum. This paper proposes a system framework for the Cognitive Radio enabled TD-LTE system that opportunistically accesses and utilizes the TV White Space spectrum. The system performance of both TV broadcasting network and TD-LTE network is evaluated and analyzed. The simulation studies show that the proposed framework can significantly improve the performance of both TV and TD-LTE systems when they are co-operating within the same TV spectrum with TV as the primary user and TD-LTE as the secondary user. Both TV spectrum utilization and TD-LTE coverage are greatly enhanced.