Joint power and channel allocation based on fair sharing in cognitive radio system

Authors:
Lin Yuqing;Zhu Qi
Affiliations:
Jiangsu Key Laboratory of Wireless Communications, Nanjing University of Posts and Telecommunications, Nanjing;Jiangsu Key Laboratory of Wireless Communications, Nanjing University of Posts and Telecommunications, Nanjing, China and National Mobile Communications Research Laboratory, Southeast University, ...
Venue:
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Year:
2009

Citing 3
Cited 0

NeXt generation/dynamic spectrum access/cognitive radio wireless networks: a survey

Computer Networks: The International Journal of Computer and Telecommunications Networking
Performance Study of the Coexistence of Wireless Sensor Networks (WSN) and Wireless Local Area Networks (WLAN)

AMS '08 Proceedings of the 2008 Second Asia International Conference on Modelling & Simulation (AMS)
Distributed Rule-Regulated Spectrum Sharing

IEEE Journal on Selected Areas in Communications

Quantified Score

Hi-index	0.00

Visualization

Abstract

In the cognitive networks, one of the major concerns is the fact that cognitive users may cause harmful interference to licensed users. And the fairness of resource allocation is another important problem in this network. This paper focuses on a joint channel and power allocation algorithm that can both protect licensed users and guarantee the fairness of spectrum sharing among cognitive users. This resource assigning problem can be formulated as a nonlinear programming. In this paper, an extended version of joint channel and power allocation algorithm is proposed. We consider the signal-to-interference ratio (SIR) constraint at the cognitive users who share the same channel, and introduce the fairness utility based on the definition of poverty line (PL), which is the minimum number of available channels for each user. Simulation results show that the proposed algorithm makes good performances in both fairness utility and network capacity.