Title :
Achievable capacity of cognitive radio systems coexisting with a macro cellular system
Author :
Fujii, Hiromitsu ; Miura, Shun ; Kayama, H.
Author_Institution :
Res. Labs., NTT DOCOMO, Inc., Yokosuka, Japan
Abstract :
A theoretical analysis of achievable capacity by a cognitive radio systems is discussed, when the cognitive radio system (CRS) uses spectrum allocated to a macro cellular system. As for the spectrum sharing mechanisms, we consider two methods based on listen-before-talk and adaptive transmit power control principles. Moreover, outdoor and indoor installations of CRS stations are investigated. Numerical results reveal capacities achieved by CRS base stations installed within the coverage area of the macro cell system.
Keywords :
cellular radio; cognitive radio; telecommunication equipment; CRS base station; adaptive transmit power control principle; cognitive radio system base station; listen-before-talk principle; macrocellular system; spectrum allocation; spectrum sharing mechanism; Antennas; Buildings; Cognitive radio; Interference; Power control; Receivers;
Conference_Titel :
Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM), 2011 Sixth International ICST Conference on
Conference_Location :
Osaka
Print_ISBN :
978-1-4577-0140-5
