Stability analysis in a cognitive radio system with cooperative beamforming

Author

Karmoose, Mohammed ; Sultan, Ahmed ; Youssef, Moustafa

Author_Institution

Dept. of Electr. Eng., Alexandria Univ., Alexandria, Egypt

fYear

2013

fDate

7-10 April 2013

Firstpage

637

Lastpage

642

Abstract

We consider a cognitive radio setting in which a relay-assisted secondary link employs cooperative beamforming to enhance its throughput and to provide protection to the primary receiver from interference. We assume the presence of infinite buffers at both the primary and secondary transmitters and characterize the maximum stable throughput region exactly using the dominant system approach. Numerical examples are provided to give insights into the impact of power control on the stability region.

Keywords

array signal processing; cooperative communication; queueing theory; radio receivers; radio spectrum management; radio transmitters; relay networks (telecommunication); signal detection; cognitive radio system; cooperative beamforming; power control impact; primary receiver protection; primary transmitters; queue stability; relay-assisted secondary link; secondary transmitters; spectrum underutilization; stability analysis; throughput enhancement; Array signal processing; Quality of service; Cognitive radio; cooperative beamforming; queue stability; relay;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference (WCNC), 2013 IEEE

Conference_Location

Shanghai

ISSN

1525-3511

Print_ISBN

978-1-4673-5938-2

Electronic_ISBN

1525-3511

Type

conf

DOI

10.1109/WCNC.2013.6554638

Filename

6554638