Title :
Joint access and power control in cognitive femtocell networks
Author :
Li, Qian ; Feng, Zhiyong ; Li, Wei ; Liu, Yang ; Zhang, Ping
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
In this paper, we address the downlink cross-tier interference of cognitive femtocell networks, which is a unique bottleneck of femtocell network performance. In particular, a new joint access and power control scheme is proposed to mitigate the cross-tier interference, maximize system throughput and provide quality of service (QoS) guarantee for both macrocell users and femtocell users. Based on the cognitive radio technology, the access control scheme greatly improves the performance of cognitive users near to femtocells. The jointly designed distributed access and power control algorithm is solved by game theory. Simulation results demonstrate that the proposed joint cognitive access and power control scheme improved the network throughput and reduced the cross-tier interference under most of the practical scenarios.
Keywords :
access control; cognitive radio; femtocellular radio; game theory; power control; quality of service; radiofrequency interference; QoS; access control; cognitive femtocell networks; cross-tier interference; femtocell network performance; game theory; macrocell users; power control; quality of service; cognitive access control scheme; cognitive femtocell networks; power control;
Conference_Titel :
Wireless Communications and Signal Processing (WCSP), 2011 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4577-1009-4
Electronic_ISBN :
978-1-4577-1008-7
DOI :
10.1109/WCSP.2011.6096915