TY - GEN
T1 - Slotted Aloha for cognitive radio users and its tagged user analysis
AU - Hu, Sanqing
AU - Yao, Yu Dong
AU - Sheikh, Asrar U.
PY - 2012
Y1 - 2012
N2 - Cognitive radio (CR) is a promising dynamic spectrum access technique to improve the utilization of the licensed spectrum. In this paper, we investigate the medium access control (MAC) protocol for CR networks and propose a cognitive MAC using slotted Aloha to enable CR users to access spectrum holes in a licensed frequency band. In order to avoid the high computational complexities of traditional Markovian analysis, we investigate the tagged user analysis (TUA) based on queuing theories in CR scenarios and use TUA to analyze the proposed cognitive MAC performance. The theoretical derivations based on TUA are presented and computer simulations are performed to evaluate the CR network performance as well as TUA accuracy. The network throughput, packet blocking probability, queue length, packet waiting time and response time are evaluated.
AB - Cognitive radio (CR) is a promising dynamic spectrum access technique to improve the utilization of the licensed spectrum. In this paper, we investigate the medium access control (MAC) protocol for CR networks and propose a cognitive MAC using slotted Aloha to enable CR users to access spectrum holes in a licensed frequency band. In order to avoid the high computational complexities of traditional Markovian analysis, we investigate the tagged user analysis (TUA) based on queuing theories in CR scenarios and use TUA to analyze the proposed cognitive MAC performance. The theoretical derivations based on TUA are presented and computer simulations are performed to evaluate the CR network performance as well as TUA accuracy. The network throughput, packet blocking probability, queue length, packet waiting time and response time are evaluated.
KW - cognitive radio
KW - medium access control
KW - queuing theory
KW - slotted Aloha
KW - tagged user analysis
UR - http://www.scopus.com/inward/record.url?scp=84861448841&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84861448841&partnerID=8YFLogxK
U2 - 10.1109/WOCC.2012.6198140
DO - 10.1109/WOCC.2012.6198140
M3 - Conference contribution
AN - SCOPUS:84861448841
SN - 9781467309394
T3 - 2012 21st Annual Wireless and Optical Communications Conference, WOCC 2012
SP - 1
EP - 5
BT - 2012 21st Annual Wireless and Optical Communications Conference, WOCC 2012
T2 - 2012 21st Annual Wireless and Optical Communications Conference, WOCC 2012
Y2 - 19 April 2012 through 21 April 2012
ER -