Title :
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
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;
Conference_Titel :
Wireless Communications and Networking Conference (WCNC), 2013 IEEE
Conference_Location :
Shanghai
Print_ISBN :
978-1-4673-5938-2
Electronic_ISBN :
1525-3511
DOI :
10.1109/WCNC.2013.6554638
