Stability analysis of multi-channel cognitive radio networks based on decoupling approach

Author

Jaedeok Kim ; Ganguk Hwang

Author_Institution

Dept. of Math. Sci., Korea Adv. Inst. of Sci. & Technol. Daejeon, Daejeon, South Korea

fYear

2015

fDate

7-10 July 2015

Firstpage

645

Lastpage

650

Abstract

In this paper, we consider a multi-channel cognitive radio network with multiple secondary users where the channel sensing of a secondary user is imperfect. Our goal in this paper is to characterize the stability region of the network. Due to the complexity in the analysis, we approximate the stability region by using the decoupling approximation. Numerical and simulation results show that our analysis well approximates the stability region. Based on our analysis, we investigate the impact of the channel sensing errors on the stability region. We also propose a channel access policy for secondary users to improve the stability region of the network.

Keywords

approximation theory; cognitive radio; wireless channels; channel access policy; channel sensing; channel sensing errors; decoupling approach; decoupling approximation; multichannel cognitive radio networks; secondary users; stability analysis; stability region; Approximation methods; Media Access Protocol; Numerical stability; Queueing analysis; Sensors; Simulation; Stability analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Ubiquitous and Future Networks (ICUFN), 2015 Seventh International Conference on

Conference_Location

Sapporo

ISSN

2288-0712

Type

conf

DOI

10.1109/ICUFN.2015.7182623

Filename

7182623