Title :
Adaptive modulation in multi-user cognitive radio networks over fading channels
Author :
Foukalas, Fotis ; Khattab, Tamer ; Poor, H. Vincent
Author_Institution :
Electr. Eng., Qatar Univ., Doha, Qatar
Abstract :
In this paper, the performance of adaptive modulation in multi-user cognitive radio networks over fading channels is analyzed. Multi-user diversity is considered for opportunistic user selection among multiple secondary users. The analysis is obtained for Nakagami-m fading channels. Both adaptive continuous rate and adaptive discrete rate schemes are analysed in opportunistic spectrum access and spectrum sharing. Numerical results are obtained and depicted to quantify the effects of multiuser fading environments on adaptive modulation operating in cognitive radio networks.
Keywords :
Nakagami channels; adaptive modulation; cognitive radio; diversity reception; multiuser channels; radio spectrum management; Nakagami-m fading channels; adaptive continuous rate; adaptive discrete rate schemes; adaptive modulation; multiple secondary users; multiuser cognitive radio networks; multiuser diversity; multiuser fading environments; opportunistic spectrum access; opportunistic user selection; spectrum sharing; Adaptive systems; Cognitive radio; Fading; Interference; Modulation; Signal to noise ratio; adaptive modulation; cognitive radio Nakagami-m fading channels; multi-user diversity;
Conference_Titel :
Cognitive Radio Oriented Wireless Networks (CROWNCOM), 2013 8th International Conference on
Conference_Location :
Washington, DC
DOI :
10.1109/CROWNCom.2013.6636822
