作者
Renchao Xie, F Richard Yu, Hong Ji, Yi Li
发表日期
2012/10/1
期刊
IEEE Transactions on Wireless Communications
卷号
11
期号
11
页码范围
3910-3920
出版商
IEEE
简介
Both cognitive radio and femtocell have been considered as promising techniques in wireless networks. However, most of previous works are focused on spectrum sharing and interference avoidance, and the energy efficiency aspect is largely ignored. In this paper, we study the energy efficiency aspect of spectrum sharing and power allocation in heterogeneous cognitive radio networks with femtocells. To fully exploit the cognitive capability, we consider a wireless network architecture in which both the macrocell and the femtocell have the cognitive capability. We formulate the energy-efficient resource allocation problem in heterogeneous cognitive radio networks with femtocells as a Stackelberg game. A gradient based iteration algorithm is proposed to obtain the Stackelberg equilibrium solution to the energy-efficient resource allocation problem. Simulation results are presented to demonstrate the Stackelberg …
学术搜索中的文章
R Xie, FR Yu, H Ji, Y Li - IEEE Transactions on Wireless Communications, 2012