TY - GEN
T1 - Spectrum sensing and data transmission tradeoff in cognitive radio networks
AU - Zou, Yulong
AU - Yao, Yu Dong
AU - Zheng, Baoyu
PY - 2010
Y1 - 2010
N2 - In cognitive radio networks, a cognitive source node typically requires two essential phases to complete a cognitive transmission process: the phase of spectrum sensing with a certain time duration to detect a spectrum hole (thus also referred to as spectrum hole detection phase) and the phase of data transmission through the detected spectrum hole. In this paper, we focus on the analysis of cognitive transmissions by jointly considering the two phases. An exact closed-form expression of an overall outage probability that accounts for both the probability of no spectrum hole detected and the probability of a channel outage is derived for cognitive transmissions. Based on the derived overall outage probability, we investigate the spectrum hole utilization efficiency, which is used to quantify the percentage of spectrum holes utilized by the cognitive source for its successful data transmission. Numerical results show that there is a tradeoff in determining the time durations for hole detection and data transmission phases in order to maximize the spectrum hole utilization efficiency.
AB - In cognitive radio networks, a cognitive source node typically requires two essential phases to complete a cognitive transmission process: the phase of spectrum sensing with a certain time duration to detect a spectrum hole (thus also referred to as spectrum hole detection phase) and the phase of data transmission through the detected spectrum hole. In this paper, we focus on the analysis of cognitive transmissions by jointly considering the two phases. An exact closed-form expression of an overall outage probability that accounts for both the probability of no spectrum hole detected and the probability of a channel outage is derived for cognitive transmissions. Based on the derived overall outage probability, we investigate the spectrum hole utilization efficiency, which is used to quantify the percentage of spectrum holes utilized by the cognitive source for its successful data transmission. Numerical results show that there is a tradeoff in determining the time durations for hole detection and data transmission phases in order to maximize the spectrum hole utilization efficiency.
KW - Cognitive radio
KW - Cognitive transmission
KW - Outage probability
KW - Spectrum sensing
KW - Tradeoff
UR - http://www.scopus.com/inward/record.url?scp=77955594956&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77955594956&partnerID=8YFLogxK
U2 - 10.1109/WOCC.2010.5510601
DO - 10.1109/WOCC.2010.5510601
M3 - Conference contribution
AN - SCOPUS:77955594956
SN - 9781424475964
T3 - WOCC2010 Technical Program - The 19th Annual Wireless and Optical Communications Conference: Converging Communications Around the Pacific
BT - WOCC2010 Technical Program - The 19th Annual Wireless and Optical Communications Conference
T2 - 19th Annual Wireless and Optical Communications Conference, WOCC2010: Converging Communications Around the Pacific
Y2 - 14 May 2010 through 15 May 2010
ER -