Title :
Dynamic Spectrum Access with Imperfect Sensing in Open Spectrum Wireless Networks
Author :
Wong, David Tung Chong ; Hoang, Anh Tuan ; Liang, Ying-Chang ; Chin, Francois Po Shin
Author_Institution :
Inst. for Infocomm Res., Singapore
fDate :
March 31 2008-April 3 2008
Abstract :
Analytical formulations of dynamic spectrum access (DSA) with perfect sensing (PS) and imperfect sensing (IS) for two radio systems are presented. The DSA with PS model is solved explicitly using a two-dimensional Markov chain, respectively, while the DSA with IS model is solved numerically using a two-dimensional Markov chain. Grades of service (GoSs) like system airtime and blocking probabilities are considered. The performance of these GoS measures and the effect of the probability of false alarm and probability of misdetection for DSA with IS are evaluated. Numerical results illustrate that the effect of DSA with IS as compared with DSA with PS.
Keywords :
Markov processes; probability; radio spectrum management; wireless sensor networks; Markov chain; blocking probability; dynamic spectrum access; grades of service; imperfect sensing; open spectrum wireless network; radio system; system airtime; Ad hoc networks; Analytical models; Bandwidth; Communications Society; Equations; Frequency; Numerical models; Steady-state; White spaces; Wireless networks;
Conference_Titel :
Wireless Communications and Networking Conference, 2008. WCNC 2008. IEEE
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4244-1997-5
DOI :
10.1109/WCNC.2008.484
